UNSW CV 第一课 下 投影 RGB HSV
https://webcms3.cse.unsw.edu.au/COMP9517/20T2/resources/46781
RGB :
1.默认的颜色空间
2. 缺点是三个通道强相关
HSV:
1. H for colors
2. S is the deviation from white 饱和度,距离白色的偏移量
3. V is the Attensity or deviation from black
YCbCr:
1. Cr tells u how far from green to red
2. Cb tells u how far from green to blue
3. Y tells u how bright the image is
L*a*b
1. L : intensity
2. green to red
3. yellow to blue
图片电子化:
1. 可以化成RBG三色通道
2. 一张人脸的图片至少需要 64*64个像素,少了分辨不出,多了空间浪费
3. 单个像素的灰度分辨率应该至少大于100 ,一般是 8bits 2^8 = 256
4.三个通道即 一个像素用24个Bits来表达 2^24 = 16,777,216