| <!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/classifier/lab_boosted_classifier.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lab_boosted_classifier.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">super</span>::Score; |
| <span class="kw">use </span><span class="kw">crate</span>::feat::LabBoostedFeatureMap; |
| <span class="kw">use </span><span class="kw">crate</span>::Rectangle; |
| |
| <span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>LabBoostedClassifier { |
| features: Vec<(i32, i32)>, |
| base_classifiers: Vec<BaseClassifier>, |
| } |
| |
| <span class="attribute">#[derive(Clone)] |
| </span><span class="kw">struct </span>BaseClassifier { |
| weights: Vec<f32>, |
| thresh: f32, |
| } |
| |
| <span class="kw">impl </span>LabBoostedClassifier { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| LabBoostedClassifier { |
| features: Vec::new(), |
| base_classifiers: Vec::new(), |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>add_feature(<span class="kw-2">&mut </span><span class="self">self</span>, x: i32, y: i32) { |
| <span class="self">self</span>.features.push((x, y)); |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>add_base_classifier(<span class="kw-2">&mut </span><span class="self">self</span>, weights: Vec<f32>, thresh: f32) { |
| <span class="self">self</span>.base_classifiers |
| .push(BaseClassifier { weights, thresh }) |
| } |
| } |
| |
| <span class="kw">const </span>K_FEAT_GROUP_SIZE: usize = <span class="number">10</span>; |
| <span class="kw">const </span>K_STDDEV_THRESH: f64 = <span class="number">10.0</span>; |
| |
| <span class="kw">impl </span>LabBoostedClassifier { |
| <span class="kw">pub fn </span>classify(<span class="kw-2">&</span><span class="self">self</span>, feature_map: <span class="kw-2">&</span>LabBoostedFeatureMap, roi: Rectangle) -> Score { |
| <span class="kw">let </span><span class="kw-2">mut </span>positive = <span class="bool-val">true</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>score = <span class="number">0.0</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>i = <span class="number">0</span>; |
| <span class="kw">while </span>positive && i < <span class="self">self</span>.base_classifiers.len() { |
| <span class="kw">for _ in </span><span class="number">0</span>..K_FEAT_GROUP_SIZE { |
| <span class="kw">let </span>(offset_x, offset_y) = <span class="self">self</span>.features[i]; |
| <span class="kw">let </span>feature_val = feature_map.get_feature_val(offset_x, offset_y, roi); |
| score += <span class="self">self</span>.base_classifiers[i].weights[feature_val <span class="kw">as </span>usize]; |
| i += <span class="number">1</span>; |
| } |
| positive = score >= <span class="self">self</span>.base_classifiers[i - <span class="number">1</span>].thresh; |
| } |
| positive = positive && (feature_map.get_std_dev(roi) > K_STDDEV_THRESH); |
| |
| Score { positive, score } |
| } |
| } |
| </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> |
