皮肤颜色检测 [英] Skin Color Detection

问题描述

我使用以下算法来检测皮肤颜色，但它在不同的照明条件下不能正常工作。任何人都可以提出任何建议，如何改善或建议更好的方法。

I am using the following algorithm to detect skin color, but its not working real well in different lighting conditions. Can anybody offer any advice how to improve it or suggest a better approach

R > 95 AND G > 40 AND B > 20 AND
max{R, G, B} – min{R, G, B} >15 AND
|R – G| > 15 AND
R > G AND R > B
OR
R > 220 AND G > 210 AND B > 170 AND
|R – G| <= 15 AND
R > B AND G > B

http://softexpert.wordpress.com/2007/10/17/skin-color-detection/

干杯

推荐答案

您的给定算法是简单的基于颜色的阈值。这将只适用于一个非常基本的条件集。对于几张图片，它可能给出非常好的结果，但作为一般的检测器它将给不良的结果。

Your given algorithm is simple colour based thresholding. This will only work for a very basic set of conditions. For a few pictures it may give really good results but as a general detector it will give poor results.

您的第一道攻击应该是切换到不同的颜色模型这是不变的照明。事实上，你提供的链接明确地说这个！例如，HSI。就个人而言，我更喜欢用L * a * b *做一些事情，但是实现从RGB转换会更困难。

Your first line of attack should be to switch to a different colour model that is invariant to illumination. In fact, the link that you give explicitly says this! For example, HSI. Personally, I would prefer to do something with L*a*b* but implementation of conversion from RGB would be more difficult.

你应该看看添加一些额外的先前条款，例如，孤立像素不能是皮肤。

You should look at adding some additional prior terms, for example, isolated pixels cannot be skin.

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