Python RGB 转HSV

说明

opencv识别图像中的颜色时需要HSV参数，本文提供一个RGB转化HSV Python代码,方便开发中使用。

代码样例

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)
    m = mx-mn
    if mx == mn:
        h = 0
    elif mx == r:
        if g >= b:
            h = ((g-b)/m)*60
        else:
            h = ((g-b)/m)*60 + 360
    elif mx == g:
        h = ((b-r)/m)*60 + 120
    elif mx == b:
        h = ((r-g)/m)*60 + 240
    if mx == 0:
        s = 0
    else:
        s = m/mx
    v = mx

    H = h / 2
    S = s * 255.0
    V = v * 255.0
    return H, S, V

    
h,s,v = rgb2hsv(255,119,34)
print(h,s,v)