亮度V），变换方法如下：
max= max ( R , G , B )；
min= min ( R , G , B )；
V= max ( R , G ,...if( G = max ) H = 120 + ( B – R ) / ( max– min ) * 60；
if( B = max ) H = 240 + ( R – G ) /...这一部分代码实现如下：
def rgb2hsv(r, g, b):
r, g, b = r/255.0, g/255.0, b/255.0
mx = max(r, g, b)
mn...= min(r, g, b)
df = mx-mn
if mx == mn:
h = 0
elif mx == r:
h = (60 * ((g-b...g, b = img_array[i,j]
h,s,v=rgb2hsv(r, g, b)
if h>300 and h0 and h<=25
