1. Skin Color Detection
Jeff Lee
2019/1/17

2. 目的
2019/1/17

3. 用途
人臉辨識
2019/1/17

4. 用途
2019/1/17

5. Color Space 黑白 彩色
2019/1/17

6. Color Space
2019/1/17

7. 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
2019/1/17

8. Skin Color Detection
2019/1/17

9. Color Space Correlation-coefficient R,G => 95.66% R,B => 83.4%
B,G => 92.34%
2019/1/17

10. Color Space
Other Color Space
RGB
2019/1/17

11. Color Space CIE YUV Other
CIEXYZ · CIELAB · CIECAM02 · CIELUV · Yuv · CIEUVW · CIE RGB
YUV
YUV (PAL) · YDbDr (SECAM) · YIQ (NTSC) · YCbCr · YPbPr · xvYCC
Other
LMS · HSL, HSV · CMYK ·… …
2019/1/17

12. YCbCr Y = 0.299R + 0.587G + 0.114B U = -0.147R - 0.289G + 0.436B
V = 0.615R G B
R = Y V
G = Y U V
B = Y U
2019/1/17

13. YCbCr Correlation-coefficient Y,Cb => -28.4% Y,Cr => 18.68%
2019/1/17

14. Skin Color Detection In Y Cr Cb Y>80 & 85 < Cb <135
2019/1/17

15. Skin Color Detection
2019/1/17

16. Skin Color Detection
Problem: Light Color
2019/1/17

17. New Method
2019/1/17

18. Original
Method
New
Method
2019/1/17