Skin Color Detection
description
Transcript of Skin Color Detection
112/04/201
Skin Color Detection
Jeff Lee
112/04/202
目的
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用途人臉辨識
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用途
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Color Space
黑白 彩色
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Color Space
Skin Color Detection
R > 95 & G > 40 & B > 20 & Max(R,G,B) – min(R,G,B)>15 & Abs(R – G) >15 & R > G & R >B
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Skin Color Detection
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Color Space
Correlation-coefficient R,G => 95.66% R,B => 83.4% B,G => 92.34%
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Color Space
RGBRGB Other Color Space
Other Color Space
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Color Space
CIE– CIEXYZ · CIELAB · CIECAM02 · CIELUV ·
Yuv · CIEUVW · CIE RGB YUV
– YUV (PAL) · YDbDr (SECAM) · YIQ (NTSC) · YCbCr · YPbPr · xvYCC
Other– LMS · HSL, HSV · CMYK ·… …
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YCbCr
Y = 0.299R + 0.587G + 0.114B U = -0.147R - 0.289G + 0.436B V = 0.615R - 0.515G - 0.100B
R = Y + 1.14V G = Y - 0.39U - 0.58V B = Y + 2.03U
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YCbCr
Correlation-coefficient Y,Cb => -28.4% Y,Cr => 18.68% Cb,Cr => -74.41%
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Skin Color Detection
In Y Cr Cb Y>80 & 85 < Cb <135 135 < Cr <180
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Skin Color Detection
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Skin Color Detection
Problem: Light Color
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New Method
112/04/2018
OriginalMethod
NewMethod