| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/git/checkouts/incubator-teaclave-crates-c8106113f74feefc/ede1f68/rustface/src/feat/surf_mlp_featmap.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>surf_mlp_featmap.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../rustface/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../rustface/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// This file is part of the open-source port of SeetaFace engine, which originally includes three modules: |
| // SeetaFace Detection, SeetaFace Alignment, and SeetaFace Identification. |
| // |
| // This file is part of the SeetaFace Detection module, containing codes implementing the face detection method described in the following paper: |
| // |
| // Funnel-structured cascade for multi-view face detection with alignment awareness, |
| // Shuzhe Wu, Meina Kan, Zhenliang He, Shiguang Shan, Xilin Chen. |
| // In Neurocomputing (under review) |
| // |
| // Copyright (C) 2016, Visual Information Processing and Learning (VIPL) group, |
| // Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China. |
| // |
| // As an open-source face recognition engine: you can redistribute SeetaFace source codes |
| // and/or modify it under the terms of the BSD 2-Clause License. |
| // |
| // You should have received a copy of the BSD 2-Clause License along with the software. |
| // If not, see < https://opensource.org/licenses/BSD-2-Clause>. |
| |
| </span><span class="kw">use </span><span class="kw">crate</span>::common::{Rectangle, Seq}; |
| <span class="kw">use </span><span class="kw">crate</span>::feat::FeatureMap; |
| <span class="kw">use </span><span class="kw">crate</span>::math; |
| <span class="kw">use </span><span class="kw">crate</span>::ImageData; |
| <span class="kw">use </span>std::ptr; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"rayon"</span>)] |
| </span><span class="kw">use </span>rayon::prelude::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub struct </span>SurfMlpFeatureMap { |
| width: u32, |
| height: u32, |
| length: usize, |
| feature_pool: FeaturePool, |
| feature_vectors: Vec<Vec<i32>>, |
| feature_vectors_normalized: Vec<Vec<f32>>, |
| grad_x: Vec<i32>, |
| grad_y: Vec<i32>, |
| int_img: Vec<i32>, |
| img_buf: Vec<i32>, |
| } |
| |
| <span class="kw">impl </span>FeatureMap <span class="kw">for </span>SurfMlpFeatureMap { |
| <span class="kw">fn </span>compute(<span class="kw-2">&mut </span><span class="self">self</span>, image: <span class="kw-2">&</span>ImageData) { |
| <span class="kw">let </span>input = image.data(); |
| <span class="kw">let </span>width = image.width(); |
| <span class="kw">let </span>height = image.height(); |
| |
| <span class="kw">if </span>width == <span class="number">0 </span>|| height == <span class="number">0 </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Illegal arguments: width ({}), height ({})"</span>, width, height); |
| } |
| |
| <span class="self">self</span>.reshape(width, height); |
| <span class="self">self</span>.compute_gradient_images(input); |
| <span class="self">self</span>.compute_integral_images(); |
| } |
| } |
| |
| <span class="kw">impl </span>SurfMlpFeatureMap { |
| <span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| <span class="kw">let </span>feature_pool = SurfMlpFeatureMap::create_feature_pool(); |
| <span class="kw">let </span>feature_pool_size = feature_pool.size(); |
| <span class="kw">let </span><span class="kw-2">mut </span>feature_vectors = Vec::with_capacity(feature_pool_size); |
| <span class="kw">let </span><span class="kw-2">mut </span>feature_vectors_normalized = Vec::with_capacity(feature_pool_size); |
| <span class="kw">for </span>feature_id <span class="kw">in </span><span class="number">0</span>..feature_pool_size { |
| <span class="kw">let </span>dim = feature_pool.get_feature_vector_dim(feature_id); |
| feature_vectors.push(<span class="macro">vec!</span>[<span class="number">0</span>; dim]); |
| feature_vectors_normalized.push(<span class="macro">vec!</span>[<span class="number">0.0</span>; dim]); |
| } |
| |
| SurfMlpFeatureMap { |
| width: <span class="number">0</span>, |
| height: <span class="number">0</span>, |
| length: <span class="number">0</span>, |
| feature_pool, |
| feature_vectors, |
| feature_vectors_normalized, |
| grad_x: Vec::new(), |
| grad_y: Vec::new(), |
| int_img: Vec::new(), |
| img_buf: Vec::new(), |
| } |
| } |
| |
| <span class="kw">fn </span>create_feature_pool() -> FeaturePool { |
| <span class="kw">let </span><span class="kw-2">mut </span>feature_pool = FeaturePool::new(); |
| feature_pool.add_patch_format(<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>); |
| feature_pool.add_patch_format(<span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>); |
| feature_pool.add_patch_format(<span class="number">2</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>); |
| feature_pool.add_patch_format(<span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>); |
| feature_pool.add_patch_format(<span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>); |
| feature_pool.create(); |
| feature_pool |
| } |
| |
| <span class="kw">fn </span>reshape(<span class="kw-2">&mut </span><span class="self">self</span>, width: u32, height: u32) { |
| <span class="self">self</span>.width = width; |
| <span class="self">self</span>.height = height; |
| <span class="self">self</span>.length = width <span class="kw">as </span>usize * height <span class="kw">as </span>usize; |
| |
| <span class="self">self</span>.grad_x.resize(<span class="self">self</span>.length, <span class="number">0</span>); |
| <span class="self">self</span>.grad_y.resize(<span class="self">self</span>.length, <span class="number">0</span>); |
| <span class="self">self</span>.int_img |
| .resize(<span class="self">self</span>.length * FeaturePool::K_NUM_INT_CHANNEL <span class="kw">as </span>usize, <span class="number">0</span>); |
| <span class="self">self</span>.img_buf.resize(<span class="self">self</span>.length, <span class="number">0</span>); |
| } |
| |
| <span class="kw">fn </span>compute_gradient_images(<span class="kw-2">&mut </span><span class="self">self</span>, input: <span class="kw-2">&</span>[u8]) { |
| <span class="macro">assert_eq!</span>(input.len(), <span class="self">self</span>.length); |
| |
| math::copy_u8_to_i32(input, <span class="kw-2">&mut </span><span class="self">self</span>.img_buf); |
| <span class="self">self</span>.compute_grad_x(); |
| <span class="self">self</span>.compute_grad_y(); |
| } |
| |
| <span class="kw">fn </span>compute_grad_x(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>input = <span class="self">self</span>.img_buf.as_ptr(); |
| <span class="kw">let </span>dx = <span class="self">self</span>.grad_x.as_mut_ptr(); |
| <span class="kw">let </span>len = (<span class="self">self</span>.width - <span class="number">2</span>) <span class="kw">as </span>usize; |
| |
| <span class="kw">unsafe </span>{ |
| <span class="kw">for </span>r <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.height { |
| <span class="kw">let </span>offset = (r * <span class="self">self</span>.width) <span class="kw">as </span>isize; |
| <span class="kw">let </span><span class="kw-2">mut </span>src = input.offset(offset); |
| <span class="kw">let </span><span class="kw-2">mut </span>dest = dx.offset(offset); |
| <span class="kw-2">*</span>dest = ((<span class="kw-2">*</span>(src.offset(<span class="number">1</span>))) - (<span class="kw-2">*</span>src)) << <span class="number">1</span>; |
| math::vector_sub(src.offset(<span class="number">2</span>), src, dest.offset(<span class="number">1</span>), len); |
| |
| <span class="kw">let </span>offset = (<span class="self">self</span>.width - <span class="number">1</span>) <span class="kw">as </span>isize; |
| src = src.offset(offset); |
| dest = dest.offset(offset); |
| <span class="kw-2">*</span>dest = ((<span class="kw-2">*</span>src) - (<span class="kw-2">*</span>(src.offset(-<span class="number">1</span>)))) << <span class="number">1</span>; |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>compute_grad_y(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>input = <span class="self">self</span>.img_buf.as_ptr(); |
| <span class="kw">let </span><span class="kw-2">mut </span>dy = <span class="self">self</span>.grad_y.as_mut_ptr(); |
| <span class="kw">let </span>len = <span class="self">self</span>.width <span class="kw">as </span>usize; |
| |
| <span class="kw">unsafe </span>{ |
| math::vector_sub(input.offset(<span class="self">self</span>.width <span class="kw">as </span>isize), input, dy, len); |
| math::vector_add(dy, dy, dy, len); |
| |
| <span class="kw">let </span>step = <span class="self">self</span>.width <span class="kw">as </span>usize; |
| <span class="kw">let </span>grad_y_stop = <span class="self">self</span>.grad_y.len() - step; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"rayon"</span>)] |
| </span><span class="kw">let </span>it = <span class="self">self |
| </span>.img_buf |
| .par_chunks(step) |
| .zip(<span class="self">self</span>.grad_y[step..grad_y_stop].par_chunks_mut(step)); |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"rayon"</span>))] |
| </span><span class="kw">let </span>it = <span class="self">self |
| </span>.img_buf |
| .chunks(step) |
| .zip(<span class="self">self</span>.grad_y[step..grad_y_stop].chunks_mut(step)); |
| |
| it.for_each(|(inputs, outputs)| { |
| <span class="kw">let </span>src = inputs.as_ptr(); |
| <span class="kw">let </span>dest = outputs.as_mut_ptr(); |
| math::vector_sub(src.offset((step << <span class="number">1</span>) <span class="kw">as </span>isize), src, dest, len); |
| }); |
| |
| <span class="kw">let </span>offset = ((<span class="self">self</span>.height - <span class="number">1</span>) * <span class="self">self</span>.width) <span class="kw">as </span>isize; |
| dy = dy.offset(offset); |
| math::vector_sub( |
| input.offset(offset), |
| input.offset(offset - <span class="self">self</span>.width <span class="kw">as </span>isize), |
| dy, |
| len, |
| ); |
| math::vector_add(dy, dy, dy, len); |
| } |
| } |
| |
| <span class="kw">fn </span>compute_integral_images(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>grad_x_ptr = <span class="self">self</span>.grad_x.as_ptr(); |
| <span class="kw">let </span>grad_y_ptr = <span class="self">self</span>.grad_y.as_ptr(); |
| <span class="kw">let </span>img_buf_ptr = <span class="self">self</span>.img_buf.as_ptr(); |
| |
| <span class="kw">unsafe </span>{ |
| <span class="self">self</span>.fill_integral_channel(grad_x_ptr, <span class="number">0</span>); |
| <span class="self">self</span>.fill_integral_channel(grad_y_ptr, <span class="number">4</span>); |
| math::abs(grad_x_ptr, img_buf_ptr <span class="kw">as </span><span class="kw-2">*mut </span>i32, <span class="self">self</span>.length); |
| <span class="self">self</span>.fill_integral_channel(img_buf_ptr, <span class="number">1</span>); |
| math::abs(grad_y_ptr, img_buf_ptr <span class="kw">as </span><span class="kw-2">*mut </span>i32, <span class="self">self</span>.length); |
| <span class="self">self</span>.fill_integral_channel(img_buf_ptr, <span class="number">5</span>); |
| } |
| |
| <span class="self">self</span>.mask_integral_channel(); |
| <span class="self">self</span>.integral(); |
| } |
| |
| <span class="kw">unsafe fn </span>fill_integral_channel(<span class="kw-2">&mut </span><span class="self">self</span>, <span class="kw-2">mut </span>src: <span class="kw-2">*const </span>i32, ch: u32) { |
| <span class="kw">let </span><span class="kw-2">mut </span>dest = <span class="self">self</span>.int_img.as_mut_ptr().offset(ch <span class="kw">as </span>isize); |
| <span class="kw">for _ in </span><span class="number">0</span>..<span class="self">self</span>.length { |
| <span class="kw-2">*</span>dest = <span class="kw-2">*</span>src; |
| <span class="kw-2">*</span>dest.offset(<span class="number">2</span>) = <span class="kw-2">*</span>src; |
| dest = dest.offset(FeaturePool::K_NUM_INT_CHANNEL <span class="kw">as </span>isize); |
| src = src.offset(<span class="number">1</span>); |
| } |
| } |
| |
| <span class="kw">fn </span>mask_integral_channel(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.mask_integral_channel_portable(); |
| } |
| |
| <span class="kw">fn </span>mask_integral_channel_portable(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span><span class="kw-2">mut </span>grad_x_ptr = <span class="self">self</span>.grad_x.as_ptr(); |
| <span class="kw">let </span><span class="kw-2">mut </span>grad_y_ptr = <span class="self">self</span>.grad_y.as_ptr(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>dx: i32; |
| <span class="kw">let </span><span class="kw-2">mut </span>dy: i32; |
| <span class="kw">let </span><span class="kw-2">mut </span>dx_mask: i32; |
| <span class="kw">let </span><span class="kw-2">mut </span>dy_mask: i32; |
| <span class="kw">let </span><span class="kw-2">mut </span>cmp: u32; |
| <span class="kw">let </span>xor_bits: Vec<u32> = <span class="macro">vec!</span>[<span class="number">0xffff_ffff</span>, <span class="number">0xffff_ffff</span>, <span class="number">0</span>, <span class="number">0</span>]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>src = <span class="self">self</span>.int_img.as_mut_ptr(); |
| <span class="kw">unsafe </span>{ |
| <span class="kw">for _ in </span><span class="number">0</span>..<span class="self">self</span>.length { |
| dx = <span class="kw-2">*</span>grad_x_ptr; |
| grad_x_ptr = grad_x_ptr.offset(<span class="number">1</span>); |
| dy = <span class="kw-2">*</span>grad_y_ptr; |
| grad_y_ptr = grad_y_ptr.offset(<span class="number">1</span>); |
| |
| cmp = <span class="kw">if </span>dy < <span class="number">0 </span>{ <span class="number">0xffff_ffff </span>} <span class="kw">else </span>{ <span class="number">0x0 </span>}; |
| <span class="kw">for </span>j <span class="kw">in </span>xor_bits.iter().take(<span class="number">4</span>) { |
| dy_mask = (cmp ^ j) <span class="kw">as </span>i32; |
| <span class="kw-2">*</span>src &= dy_mask; |
| src = src.offset(<span class="number">1</span>); |
| } |
| |
| cmp = <span class="kw">if </span>dx < <span class="number">0 </span>{ <span class="number">0xffff_ffff </span>} <span class="kw">else </span>{ <span class="number">0x0 </span>}; |
| <span class="kw">for </span>j <span class="kw">in </span>xor_bits.iter().take(<span class="number">4</span>) { |
| dx_mask = (cmp ^ j) <span class="kw">as </span>i32; |
| <span class="kw-2">*</span>src &= dx_mask; |
| src = src.offset(<span class="number">1</span>); |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>integral(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>data = <span class="self">self</span>.int_img.as_ptr(); |
| <span class="kw">let </span>len = (FeaturePool::K_NUM_INT_CHANNEL * <span class="self">self</span>.width) <span class="kw">as </span>usize; |
| |
| <span class="kw">unsafe </span>{ |
| <span class="kw">for </span>r <span class="kw">in </span><span class="number">0</span>..(<span class="self">self</span>.height - <span class="number">1</span>) <span class="kw">as </span>isize { |
| <span class="kw">let </span>row1 = data.offset(r * len <span class="kw">as </span>isize); |
| <span class="kw">let </span>row2 = row1.offset(len <span class="kw">as </span>isize); |
| math::vector_add(row1, row2, row2 <span class="kw">as </span><span class="kw-2">*mut </span>i32, len); |
| } |
| |
| <span class="kw">for </span>r <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.height <span class="kw">as </span>isize { |
| SurfMlpFeatureMap::vector_cumulative_add( |
| data.offset(r * len <span class="kw">as </span>isize), |
| len, |
| FeaturePool::K_NUM_INT_CHANNEL, |
| ); |
| } |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>vector_cumulative_add(x: <span class="kw-2">*const </span>i32, len: usize, num_channel: u32) { |
| SurfMlpFeatureMap::vector_cumulative_add_portable(x, len, num_channel); |
| } |
| |
| <span class="kw">fn </span>vector_cumulative_add_portable(x: <span class="kw-2">*const </span>i32, len: usize, num_channel: u32) { |
| <span class="kw">unsafe </span>{ |
| <span class="kw">let </span>num_channel = num_channel <span class="kw">as </span>usize; |
| <span class="kw">let </span>cols = len / num_channel - <span class="number">1</span>; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..cols <span class="kw">as </span>isize { |
| <span class="kw">let </span>col1 = x.offset(i * num_channel <span class="kw">as </span>isize); |
| <span class="kw">let </span>col2 = col1.offset(num_channel <span class="kw">as </span>isize); |
| math::vector_add(col1, col2, col2 <span class="kw">as </span><span class="kw-2">*mut </span>i32, num_channel); |
| } |
| } |
| } |
| |
| <span class="kw">unsafe fn </span>compute_feature_vector(<span class="kw-2">&mut </span><span class="self">self</span>, feature_id: usize, roi: Rectangle) { |
| <span class="kw">let </span>feature = <span class="self">self</span>.feature_pool.get_feature(feature_id); |
| <span class="kw">let </span>feature_vec = <span class="self">self</span>.feature_vectors[feature_id].as_mut_ptr(); |
| |
| <span class="kw">let </span>init_cell_x = roi.x() + feature.patch.x(); |
| <span class="kw">let </span>init_cell_y = roi.y() + feature.patch.y(); |
| <span class="kw">let </span>k_num_int_channel = FeaturePool::K_NUM_INT_CHANNEL <span class="kw">as </span>isize; |
| <span class="kw">let </span>cell_width: isize = |
| (feature.patch.width() / feature.num_cell_per_row) <span class="kw">as </span>isize * k_num_int_channel; |
| <span class="kw">let </span>cell_height: isize = (feature.patch.height() / feature.num_cell_per_col) <span class="kw">as </span>isize; |
| <span class="kw">let </span>row_width: isize = (<span class="self">self</span>.width <span class="kw">as </span>isize) * k_num_int_channel; |
| |
| <span class="kw">let </span>val = <span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>cell_top_left: Vec<<span class="kw-2">*const </span>i32> = <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| <span class="kw">let </span><span class="kw-2">mut </span>cell_top_right: Vec<<span class="kw-2">*const </span>i32> = <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| <span class="kw">let </span><span class="kw-2">mut </span>cell_bottom_left: Vec<<span class="kw-2">*const </span>i32> = <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| <span class="kw">let </span><span class="kw-2">mut </span>cell_bottom_right: Vec<<span class="kw-2">*const </span>i32> = <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>feature_value: <span class="kw-2">*mut </span>i32 = feature_vec; |
| <span class="kw">let </span>int_img_ptr = <span class="self">self</span>.int_img.as_ptr(); |
| <span class="kw">let </span><span class="kw-2">mut </span>offset: isize; |
| |
| <span class="kw">match </span>(init_cell_x, init_cell_y) { |
| (<span class="number">0</span>, <span class="number">0</span>) => { |
| offset = row_width * (cell_height - <span class="number">1</span>) + cell_width - k_num_int_channel; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_right[i] = int_img_ptr.offset(offset); |
| offset += <span class="number">1</span>; |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[i]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| cell_top_right[i] = cell_bottom_right[i]; |
| } |
| |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_left[j] = cell_bottom_right[j]; |
| cell_bottom_right[j] = cell_bottom_right[j].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] - <span class="kw-2">*</span>cell_bottom_left[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| } |
| (<span class="kw">_</span>, <span class="number">0</span>) => { |
| offset = |
| row_width * (cell_height - <span class="number">1</span>) + (init_cell_x - <span class="number">1</span>) <span class="kw">as </span>isize * k_num_int_channel; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_left[i] = int_img_ptr.offset(offset); |
| offset += <span class="number">1</span>; |
| cell_bottom_right[i] = cell_bottom_left[i].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[i] - <span class="kw-2">*</span>cell_bottom_left[i]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| cell_top_right[i] = cell_bottom_right[i]; |
| } |
| |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_left[j] = cell_bottom_right[j]; |
| cell_bottom_right[j] = cell_bottom_right[j].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] - <span class="kw-2">*</span>cell_bottom_left[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| } |
| (<span class="number">0</span>, <span class="kw">_</span>) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>tmp_cell_top_right: Vec<<span class="kw-2">*const </span>i32> = |
| <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| |
| offset = row_width * ((init_cell_y - <span class="number">1</span>) <span class="kw">as </span>isize) + cell_width - k_num_int_channel; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_top_right[i] = int_img_ptr.offset(offset); |
| offset += <span class="number">1</span>; |
| cell_bottom_right[i] = cell_top_right[i].offset(row_width * cell_height); |
| tmp_cell_top_right[i] = cell_bottom_right[i]; |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[i] - <span class="kw-2">*</span>cell_top_right[i]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_top_left[j] = cell_top_right[j]; |
| cell_top_right[j] = cell_top_right[j].offset(cell_width); |
| cell_bottom_left[j] = cell_bottom_right[j]; |
| cell_bottom_right[j] = cell_bottom_right[j].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] + <span class="kw-2">*</span>cell_top_left[j] |
| - <span class="kw-2">*</span>cell_top_right[j] |
| - <span class="kw-2">*</span>cell_bottom_left[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| |
| cell_top_right[..k_num_int_channel <span class="kw">as </span>usize] |
| .clone_from_slice(<span class="kw-2">&</span>tmp_cell_top_right[..k_num_int_channel <span class="kw">as </span>usize]); |
| } |
| (<span class="kw">_</span>, <span class="kw">_</span>) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>tmp_cell_top_right: Vec<<span class="kw-2">*const </span>i32> = |
| <span class="macro">vec!</span>[<span class="kw-2">&</span>val; k_num_int_channel <span class="kw">as </span>usize]; |
| |
| offset = row_width * ((init_cell_y - <span class="number">1</span>) <span class="kw">as </span>isize) |
| + (init_cell_x - <span class="number">1</span>) <span class="kw">as </span>isize * k_num_int_channel; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_top_left[i] = int_img_ptr.offset(offset); |
| offset += <span class="number">1</span>; |
| cell_top_right[i] = cell_top_left[i].offset(cell_width); |
| cell_bottom_left[i] = cell_top_left[i].offset(row_width * cell_height); |
| cell_bottom_right[i] = cell_bottom_left[i].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[i] + <span class="kw-2">*</span>cell_top_left[i] |
| - <span class="kw-2">*</span>cell_top_right[i] |
| - <span class="kw-2">*</span>cell_bottom_left[i]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| tmp_cell_top_right[i] = cell_bottom_right[i]; |
| } |
| |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_top_left[j] = cell_top_right[j]; |
| cell_top_right[j] = cell_top_right[j].offset(cell_width); |
| cell_bottom_left[j] = cell_bottom_right[j]; |
| cell_bottom_right[j] = cell_bottom_right[j].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] + <span class="kw-2">*</span>cell_top_left[j] |
| - <span class="kw-2">*</span>cell_top_right[j] |
| - <span class="kw-2">*</span>cell_bottom_left[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| |
| cell_top_right[..k_num_int_channel <span class="kw">as </span>usize] |
| .clone_from_slice(<span class="kw-2">&</span>tmp_cell_top_right[..k_num_int_channel <span class="kw">as </span>usize]); |
| } |
| } |
| |
| offset = cell_height * row_width - feature.patch.width() <span class="kw">as </span>isize * k_num_int_channel |
| + cell_width; |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">if </span>init_cell_x == <span class="number">0 </span>{ |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_right[j] = cell_bottom_right[j].offset(offset); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] - <span class="kw-2">*</span>cell_top_right[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">for </span>j <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_bottom_right[j] = cell_bottom_right[j].offset(offset); |
| cell_top_left[j] = cell_top_right[j].offset(-cell_width); |
| cell_bottom_left[j] = cell_bottom_right[j].offset(-cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[j] + <span class="kw-2">*</span>cell_top_left[j] |
| - <span class="kw-2">*</span>cell_top_right[j] |
| - <span class="kw-2">*</span>cell_bottom_left[j]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| |
| <span class="kw">for _ in </span><span class="number">1</span>..feature.num_cell_per_row { |
| <span class="kw">for </span>k <span class="kw">in </span><span class="number">0</span>..k_num_int_channel <span class="kw">as </span>usize { |
| cell_top_left[k] = cell_top_right[k]; |
| cell_top_right[k] = cell_top_right[k].offset(cell_width); |
| cell_bottom_left[k] = cell_bottom_right[k]; |
| cell_bottom_right[k] = cell_bottom_right[k].offset(cell_width); |
| <span class="kw-2">*</span>feature_value = <span class="kw-2">*</span>cell_bottom_right[k] + <span class="kw-2">*</span>cell_top_left[k] |
| - <span class="kw-2">*</span>cell_bottom_left[k] |
| - <span class="kw-2">*</span>cell_top_right[k]; |
| feature_value = feature_value.offset(<span class="number">1</span>); |
| } |
| } |
| |
| <span class="kw">for </span>j <span class="kw">in </span>cell_top_right.iter_mut().take(k_num_int_channel <span class="kw">as </span>usize) { |
| <span class="kw-2">*</span>j = j.offset(offset); |
| } |
| } |
| } |
| |
| <span class="kw">pub unsafe fn </span>get_feature_vector( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| feature_id: usize, |
| feature_vec: <span class="kw-2">*mut </span>f32, |
| roi: Rectangle, |
| ) { |
| <span class="self">self</span>.compute_feature_vector(feature_id, roi); |
| |
| SurfMlpFeatureMap::normalize_feature_vector( |
| <span class="kw-2">&</span><span class="self">self</span>.feature_vectors[feature_id], |
| <span class="kw-2">&mut </span><span class="self">self</span>.feature_vectors_normalized[feature_id], |
| ); |
| |
| <span class="kw">let </span>feature_vec_normalized = <span class="self">self</span>.feature_vectors_normalized[feature_id].as_ptr(); |
| <span class="kw">let </span>length = <span class="self">self</span>.feature_vectors_normalized[feature_id].len(); |
| ptr::copy_nonoverlapping(feature_vec_normalized, feature_vec, length); |
| } |
| |
| <span class="kw">fn </span>normalize_feature_vector(feature_vec: <span class="kw-2">&</span>[i32], feature_vec_normalized: <span class="kw-2">&mut </span>[f32]) { |
| <span class="kw">let </span>prod: f64 = feature_vec |
| .iter() |
| .copied() |
| .map(|value| f64::from(value * value)) |
| .sum(); |
| |
| <span class="kw">if </span>prod != <span class="number">0.0 </span>{ |
| <span class="kw">let </span>norm = prod.sqrt() <span class="kw">as </span>f32; |
| <span class="kw">for </span>(dst, src) <span class="kw">in </span>feature_vec_normalized.iter_mut().zip(feature_vec) { |
| <span class="kw-2">*</span>dst = <span class="kw-2">*</span>src <span class="kw">as </span>f32 / norm; |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">for </span>dst <span class="kw">in </span>feature_vec_normalized { |
| <span class="kw-2">*</span>dst = <span class="number">0.0</span>; |
| } |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_feature_vector_dim(<span class="kw-2">&</span><span class="self">self</span>, feature_id: usize) -> usize { |
| <span class="self">self</span>.feature_pool.get_feature_vector_dim(feature_id) |
| } |
| } |
| |
| <span class="kw">struct </span>FeaturePool { |
| sample_width: u32, |
| sample_height: u32, |
| patch_move_step_x: u32, |
| patch_move_step_y: u32, |
| patch_size_inc_step: u32, |
| patch_min_width: u32, |
| patch_min_height: u32, |
| features: Vec<Feature>, |
| patch_formats: Vec<PatchFormat>, |
| } |
| |
| <span class="kw">impl </span>FeaturePool { |
| <span class="kw">const </span>K_NUM_INT_CHANNEL: u32 = <span class="number">8</span>; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>new() -> <span class="self">Self </span>{ |
| FeaturePool { |
| sample_width: <span class="number">40</span>, |
| sample_height: <span class="number">40</span>, |
| patch_move_step_x: <span class="number">16</span>, |
| patch_move_step_y: <span class="number">16</span>, |
| patch_size_inc_step: <span class="number">1</span>, |
| patch_min_width: <span class="number">16</span>, |
| patch_min_height: <span class="number">16</span>, |
| features: Vec::new(), |
| patch_formats: Vec::new(), |
| } |
| } |
| |
| <span class="kw">fn </span>add_patch_format( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| width: u32, |
| height: u32, |
| num_cell_per_row: u32, |
| num_cell_per_col: u32, |
| ) { |
| <span class="self">self</span>.patch_formats.push(PatchFormat { |
| width, |
| height, |
| num_cell_per_row, |
| num_cell_per_col, |
| }); |
| } |
| |
| <span class="kw">fn </span>create(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span><span class="kw-2">mut </span>feature_vecs = Vec::new(); |
| |
| <span class="kw">if </span><span class="self">self</span>.sample_height - <span class="self">self</span>.patch_min_height <= <span class="self">self</span>.sample_width - <span class="self">self</span>.patch_min_width { |
| <span class="kw">for </span>format <span class="kw">in </span><span class="kw-2">&</span><span class="self">self</span>.patch_formats { |
| <span class="kw">for </span>h <span class="kw">in </span>Seq::new(<span class="self">self</span>.patch_min_height, |x| x + <span class="self">self</span>.patch_size_inc_step) |
| .take_while(|x| <span class="kw-2">*</span>x <= <span class="self">self</span>.sample_height) |
| { |
| <span class="kw">if </span>h % format.num_cell_per_col != <span class="number">0 </span>|| h % format.height != <span class="number">0 </span>{ |
| <span class="kw">continue</span>; |
| } |
| <span class="kw">let </span>w = h / format.height * format.width; |
| <span class="kw">if </span>w % format.num_cell_per_row != <span class="number">0 |
| </span>|| w < <span class="self">self</span>.patch_min_width |
| || w > <span class="self">self</span>.sample_width |
| { |
| <span class="kw">continue</span>; |
| } |
| <span class="self">self</span>.collect_features( |
| w, |
| h, |
| format.num_cell_per_row, |
| format.num_cell_per_col, |
| <span class="kw-2">&mut </span>feature_vecs, |
| ); |
| } |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">for </span>format <span class="kw">in </span><span class="kw-2">&</span><span class="self">self</span>.patch_formats { |
| <span class="comment">// original condition was <= self.patch_min_width, |
| // but it would not make sense to have a loop in such case |
| </span><span class="kw">for </span>w <span class="kw">in </span>Seq::new(<span class="self">self</span>.patch_min_width, |x| x + <span class="self">self</span>.patch_size_inc_step) |
| .take_while(|x| <span class="kw-2">*</span>x <= <span class="self">self</span>.sample_width) |
| { |
| <span class="kw">if </span>w % format.num_cell_per_row != <span class="number">0 </span>|| w % format.width != <span class="number">0 </span>{ |
| <span class="kw">continue</span>; |
| } |
| <span class="kw">let </span>h = w / format.width * format.height; |
| <span class="kw">if </span>h % format.num_cell_per_col != <span class="number">0 |
| </span>|| h < <span class="self">self</span>.patch_min_height |
| || h > <span class="self">self</span>.sample_height |
| { |
| <span class="kw">continue</span>; |
| } |
| <span class="self">self</span>.collect_features( |
| w, |
| h, |
| format.num_cell_per_row, |
| format.num_cell_per_col, |
| <span class="kw-2">&mut </span>feature_vecs, |
| ); |
| } |
| } |
| } |
| |
| <span class="self">self</span>.features.append(<span class="kw-2">&mut </span>feature_vecs); |
| } |
| |
| <span class="kw">fn </span>collect_features( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| width: u32, |
| height: u32, |
| num_cell_per_row: u32, |
| num_cell_per_col: u32, |
| dest: <span class="kw-2">&mut </span>Vec<Feature>, |
| ) { |
| <span class="kw">let </span>y_lim = <span class="self">self</span>.sample_height - height; |
| <span class="kw">let </span>x_lim = <span class="self">self</span>.sample_width - width; |
| |
| <span class="kw">for </span>y <span class="kw">in </span>Seq::new(<span class="number">0</span>, |n| n + <span class="self">self</span>.patch_move_step_y).take_while(|n| <span class="kw-2">*</span>n <= y_lim) { |
| <span class="kw">for </span>x <span class="kw">in </span>Seq::new(<span class="number">0</span>, |n| n + <span class="self">self</span>.patch_move_step_x).take_while(|n| <span class="kw-2">*</span>n <= x_lim) { |
| dest.push(Feature { |
| patch: Rectangle::new(x <span class="kw">as </span>i32, y <span class="kw">as </span>i32, width, height), |
| num_cell_per_row, |
| num_cell_per_col, |
| }); |
| } |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>size(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.features.len() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_feature(<span class="kw-2">&</span><span class="self">self</span>, feature_id: usize) -> <span class="kw-2">&</span>Feature { |
| <span class="kw-2">&</span><span class="self">self</span>.features[feature_id] |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>get_feature_vector_dim(<span class="kw-2">&</span><span class="self">self</span>, feature_id: usize) -> usize { |
| <span class="kw">let </span>feature = <span class="kw-2">&</span><span class="self">self</span>.features[feature_id]; |
| (feature.num_cell_per_col * feature.num_cell_per_row * FeaturePool::K_NUM_INT_CHANNEL) |
| <span class="kw">as </span>usize |
| } |
| } |
| |
| <span class="kw">struct </span>PatchFormat { |
| width: u32, |
| height: u32, |
| num_cell_per_row: u32, |
| num_cell_per_col: u32, |
| } |
| |
| <span class="kw">struct </span>Feature { |
| patch: Rectangle, |
| num_cell_per_row: u32, |
| num_cell_per_col: u32, |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="rustface" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
