| <!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/lab_boosted_featmap.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lab_boosted_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>::ImageData; |
| <span class="kw">use </span>num; |
| <span class="kw">use </span>num::integer::Integer; |
| <span class="kw">use </span>num::traits::WrappingAdd; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::common::Rectangle; |
| <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">pub struct </span>LabBoostedFeatureMap { |
| width: u32, |
| height: u32, |
| length: usize, |
| feat_map: Vec<u8>, |
| rect_sum: Vec<i32>, |
| int_img: Vec<i32>, |
| square_int_img: Vec<u32>, |
| rect_width: u32, |
| rect_height: u32, |
| num_rect: u32, |
| } |
| |
| <span class="kw">impl </span>FeatureMap <span class="kw">for </span>LabBoostedFeatureMap { |
| <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_integral_images(input); |
| <span class="self">self</span>.compute_rect_sum(); |
| <span class="self">self</span>.compute_feature_map(); |
| } |
| } |
| |
| <span class="kw">impl </span>LabBoostedFeatureMap { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| LabBoostedFeatureMap { |
| width: <span class="number">0</span>, |
| height: <span class="number">0</span>, |
| length: <span class="number">0</span>, |
| feat_map: Vec::new(), |
| rect_sum: Vec::new(), |
| int_img: Vec::new(), |
| square_int_img: Vec::new(), |
| rect_width: <span class="number">3</span>, |
| rect_height: <span class="number">3</span>, |
| num_rect: <span class="number">3</span>, |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>get_feature_val(<span class="kw-2">&</span><span class="self">self</span>, offset_x: i32, offset_y: i32, roi: Rectangle) -> u8 { |
| <span class="kw">let </span>i = (roi.y() + offset_y) * (<span class="self">self</span>.width <span class="kw">as </span>i32) + roi.x() + offset_x; |
| <span class="self">self</span>.feat_map[i <span class="kw">as </span>usize] |
| } |
| |
| <span class="kw">pub fn </span>get_std_dev(<span class="kw-2">&</span><span class="self">self</span>, roi: Rectangle) -> f64 { |
| <span class="kw">let </span>roi_width = roi.width() <span class="kw">as </span>i32; |
| <span class="kw">let </span>roi_height = roi.height() <span class="kw">as </span>i32; |
| <span class="kw">let </span>roi_x = roi.x() <span class="kw">as </span>i32; |
| <span class="kw">let </span>roi_y = roi.y() <span class="kw">as </span>i32; |
| <span class="kw">let </span>self_width = <span class="self">self</span>.width <span class="kw">as </span>i32; |
| |
| <span class="kw">let </span>mean; |
| <span class="kw">let </span>m2; |
| <span class="kw">let </span>area = f64::from(roi_width * roi_height); |
| |
| <span class="kw">match </span>(roi_x, roi_y) { |
| (<span class="number">0</span>, <span class="number">0</span>) => { |
| <span class="kw">let </span>bottom_right = (roi_height - <span class="number">1</span>) * self_width + roi_width - <span class="number">1</span>; |
| mean = f64::from(<span class="self">self</span>.int_img[bottom_right <span class="kw">as </span>usize]) / area; |
| m2 = f64::from(<span class="self">self</span>.square_int_img[bottom_right <span class="kw">as </span>usize]) / area; |
| } |
| (<span class="number">0</span>, <span class="kw">_</span>) => { |
| <span class="kw">let </span>top_right = (roi_y - <span class="number">1</span>) * self_width + roi_width - <span class="number">1</span>; |
| <span class="kw">let </span>bottom_right = top_right + roi_height * self_width; |
| mean = f64::from( |
| <span class="self">self</span>.int_img[bottom_right <span class="kw">as </span>usize] - <span class="self">self</span>.int_img[top_right <span class="kw">as </span>usize], |
| ) / area; |
| m2 = f64::from( |
| <span class="self">self</span>.square_int_img[bottom_right <span class="kw">as </span>usize] |
| - <span class="self">self</span>.square_int_img[top_right <span class="kw">as </span>usize], |
| ) / area; |
| } |
| (<span class="kw">_</span>, <span class="number">0</span>) => { |
| <span class="kw">let </span>bottom_left = (roi_height - <span class="number">1</span>) * self_width + roi_x - <span class="number">1</span>; |
| <span class="kw">let </span>bottom_right = bottom_left + roi_width; |
| mean = f64::from( |
| <span class="self">self</span>.int_img[bottom_right <span class="kw">as </span>usize] - <span class="self">self</span>.int_img[bottom_left <span class="kw">as </span>usize], |
| ) / area; |
| m2 = f64::from( |
| <span class="self">self</span>.square_int_img[bottom_right <span class="kw">as </span>usize] |
| - <span class="self">self</span>.square_int_img[bottom_left <span class="kw">as </span>usize], |
| ) / area; |
| } |
| (<span class="kw">_</span>, <span class="kw">_</span>) => { |
| <span class="kw">let </span>top_left = (roi_y - <span class="number">1</span>) * self_width + roi_x - <span class="number">1</span>; |
| <span class="kw">let </span>top_right = top_left + roi_width; |
| <span class="kw">let </span>bottom_left = top_left + roi_height * self_width; |
| <span class="kw">let </span>bottom_right = bottom_left + roi_width; |
| mean = f64::from( |
| <span class="self">self</span>.int_img[bottom_right <span class="kw">as </span>usize] - <span class="self">self</span>.int_img[bottom_left <span class="kw">as </span>usize] |
| + <span class="self">self</span>.int_img[top_left <span class="kw">as </span>usize] |
| - <span class="self">self</span>.int_img[top_right <span class="kw">as </span>usize], |
| ) / area; |
| m2 = f64::from( |
| <span class="self">self</span>.square_int_img[bottom_right <span class="kw">as </span>usize] |
| .wrapping_sub(<span class="self">self</span>.square_int_img[bottom_left <span class="kw">as </span>usize]) |
| .wrapping_add(<span class="self">self</span>.square_int_img[top_left <span class="kw">as </span>usize]) |
| .wrapping_sub(<span class="self">self</span>.square_int_img[top_right <span class="kw">as </span>usize]), |
| ) / area; |
| } |
| } |
| |
| (m2 - mean * mean).sqrt() |
| } |
| |
| <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>.feat_map.resize(<span class="self">self</span>.length, <span class="number">0</span>); |
| <span class="self">self</span>.rect_sum.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, <span class="number">0</span>); |
| <span class="self">self</span>.square_int_img.resize(<span class="self">self</span>.length, <span class="number">0</span>); |
| } |
| |
| <span class="kw">fn </span>compute_integral_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); |
| |
| <span class="kw">unsafe </span>{ |
| math::copy_u8_to_i32(input, <span class="kw-2">&mut </span><span class="self">self</span>.int_img); |
| math::square(<span class="kw-2">&</span><span class="self">self</span>.int_img, <span class="kw-2">&mut </span><span class="self">self</span>.square_int_img); |
| |
| LabBoostedFeatureMap::compute_integral( |
| <span class="self">self</span>.int_img.as_mut_ptr(), |
| <span class="self">self</span>.width, |
| <span class="self">self</span>.height, |
| ); |
| LabBoostedFeatureMap::compute_integral( |
| <span class="self">self</span>.square_int_img.as_mut_ptr(), |
| <span class="self">self</span>.width, |
| <span class="self">self</span>.height, |
| ); |
| } |
| } |
| |
| <span class="kw">unsafe fn </span>compute_integral<T: Integer + WrappingAdd + Copy>( |
| data: <span class="kw-2">*mut </span>T, |
| width: u32, |
| height: u32, |
| ) { |
| <span class="kw">let </span><span class="kw-2">mut </span>src = data; |
| <span class="kw">let </span><span class="kw-2">mut </span>dest = data; |
| <span class="kw">let </span><span class="kw-2">mut </span>dest_previous_row = dest; |
| |
| <span class="kw-2">*</span>dest = <span class="kw-2">*</span>src; |
| src = src.offset(<span class="number">1</span>); |
| <span class="kw">for _ in </span><span class="number">1</span>..width { |
| <span class="kw-2">*</span>dest.offset(<span class="number">1</span>) = <span class="kw-2">*</span>dest + <span class="kw-2">*</span>src; |
| |
| src = src.offset(<span class="number">1</span>); |
| dest = dest.offset(<span class="number">1</span>); |
| } |
| |
| dest = dest.offset(<span class="number">1</span>); |
| <span class="kw">for _ in </span><span class="number">1</span>..height { |
| <span class="kw">let </span><span class="kw-2">mut </span>s: T = num::zero(); |
| <span class="kw">for _ in </span><span class="number">0</span>..width { |
| s = s + <span class="kw-2">*</span>src; |
| <span class="comment">// overflow does happen here for the list of squares.. |
| // original code does not seem to worry about this though |
| </span><span class="kw-2">*</span>dest = (<span class="kw-2">*</span>dest_previous_row).wrapping_add(<span class="kw-2">&</span>s); |
| |
| src = src.offset(<span class="number">1</span>); |
| dest = dest.offset(<span class="number">1</span>); |
| dest_previous_row = dest_previous_row.offset(<span class="number">1</span>); |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>compute_rect_sum(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>width = (<span class="self">self</span>.width - <span class="self">self</span>.rect_width) <span class="kw">as </span>usize; |
| <span class="kw">let </span>height = <span class="self">self</span>.height - <span class="self">self</span>.rect_height; |
| |
| <span class="kw">let </span>int_img_ptr = <span class="self">self</span>.int_img.as_ptr(); |
| <span class="kw">let </span>rect_sum_ptr = <span class="self">self</span>.rect_sum.as_mut_ptr(); |
| |
| <span class="kw">unsafe </span>{ |
| <span class="kw-2">*</span>rect_sum_ptr = <span class="kw-2">*</span>(int_img_ptr |
| .offset(((<span class="self">self</span>.rect_height - <span class="number">1</span>) * <span class="self">self</span>.width + <span class="self">self</span>.rect_width - <span class="number">1</span>) <span class="kw">as </span>isize)); |
| math::vector_sub( |
| int_img_ptr |
| .offset(((<span class="self">self</span>.rect_height - <span class="number">1</span>) * <span class="self">self</span>.width + <span class="self">self</span>.rect_width) <span class="kw">as </span>isize), |
| int_img_ptr.offset(((<span class="self">self</span>.rect_height - <span class="number">1</span>) * <span class="self">self</span>.width) <span class="kw">as </span>isize), |
| rect_sum_ptr.offset(<span class="number">1</span>), |
| width, |
| ); |
| |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">1</span>..(height + <span class="number">1</span>) { |
| <span class="kw">let </span>top_left = int_img_ptr.offset(((i - <span class="number">1</span>) * <span class="self">self</span>.width) <span class="kw">as </span>isize); |
| <span class="kw">let </span>top_right = top_left.offset((<span class="self">self</span>.rect_width - <span class="number">1</span>) <span class="kw">as </span>isize); |
| <span class="kw">let </span>bottom_left = top_left.offset((<span class="self">self</span>.rect_height * <span class="self">self</span>.width) <span class="kw">as </span>isize); |
| <span class="kw">let </span>bottom_right = bottom_left.offset((<span class="self">self</span>.rect_width - <span class="number">1</span>) <span class="kw">as </span>isize); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>dest = rect_sum_ptr.offset((i * <span class="self">self</span>.width) <span class="kw">as </span>isize); |
| <span class="kw-2">*</span>dest = <span class="kw-2">*</span>bottom_right - <span class="kw-2">*</span>top_right; |
| dest = dest.offset(<span class="number">1</span>); |
| |
| math::vector_sub(bottom_right.offset(<span class="number">1</span>), top_right.offset(<span class="number">1</span>), dest, width); |
| math::vector_sub(dest, bottom_left, dest, width); |
| math::vector_add(dest, top_left, dest, width); |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>compute_feature_map(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">let </span>width = <span class="self">self</span>.width - <span class="self">self</span>.rect_width * <span class="self">self</span>.num_rect; |
| <span class="kw">let </span>height = <span class="self">self</span>.height - <span class="self">self</span>.rect_height * <span class="self">self</span>.num_rect; |
| <span class="kw">let </span>offset = <span class="self">self</span>.width * <span class="self">self</span>.rect_height; |
| |
| <span class="kw">let </span>feat_map_ptr = <span class="self">self</span>.feat_map.as_mut_ptr(); |
| |
| <span class="kw">unsafe </span>{ |
| <span class="kw">for </span>r <span class="kw">in </span><span class="number">0</span>..(height + <span class="number">1</span>) { |
| <span class="kw">for </span>c <span class="kw">in </span><span class="number">0</span>..(width + <span class="number">1</span>) { |
| <span class="kw">let </span>dest = feat_map_ptr.offset((r * <span class="self">self</span>.width + c) <span class="kw">as </span>isize); |
| <span class="kw-2">*</span>dest = <span class="number">0</span>; |
| |
| <span class="kw">let </span>white_rect_sum = <span class="self">self</span>.rect_sum |
| [((r + <span class="self">self</span>.rect_height) * <span class="self">self</span>.width + c + <span class="self">self</span>.rect_width) <span class="kw">as </span>usize]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>black_rect_idx = r * <span class="self">self</span>.width + c; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x80 |
| </span>}; |
| |
| black_rect_idx += <span class="self">self</span>.rect_width; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x40 |
| </span>}; |
| black_rect_idx += <span class="self">self</span>.rect_width; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x20 |
| </span>}; |
| |
| black_rect_idx += offset; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x08 |
| </span>}; |
| black_rect_idx += offset; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x01 |
| </span>}; |
| |
| black_rect_idx -= <span class="self">self</span>.rect_width; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x02 |
| </span>}; |
| black_rect_idx -= <span class="self">self</span>.rect_width; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x04 |
| </span>}; |
| |
| black_rect_idx -= offset; |
| <span class="kw">if </span>white_rect_sum >= <span class="self">self</span>.rect_sum[black_rect_idx <span class="kw">as </span>usize] { |
| <span class="kw-2">*</span>dest |= <span class="number">0x10 |
| </span>}; |
| } |
| } |
| } |
| } |
| } |
| </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> |