通过PIL和colorsys将RGB转换为HSV [英] RGB to HSV via PIL and colorsys

问题描述

我写了一个函数，可以从RGB> HSV转换图像.但是，当我保存新图像时，唯一得到的就是黑色图像.我应该解决什么才能解决它?

I have written a function which converts an Image from RGB > HSV. However, when I save the new image the only thing I get is a black image. What should I fix to get it solved?

任何帮助，我们将不胜感激！

Any help is kindly appreciated!

我的代码:

def HSVColor(img):
    if isinstance(img,Image):
        r,g,b = img.split()
        Hdat = []
        Sdat = []
        Vdat = [] 
        for rd,gn,bl in zip(r.getdata(),g.getdata(),b.getdata()) :
            h,s,v = colorsys.rgb_to_hsv(rd/255.,gn/255.,bl/255.)
            Hdat.append(int(h*255.))
            Sdat.append(int(l*255.))
            Vdat.append(int(s*255.))
        r.putdata(Hdat)
        g.putdata(Sdat)
        b.putdata(Vdat)
        return Image.merge('RGB',(r,g,b))
    else:
        return None

推荐答案

您是否将模块Image和其类Image混合使用?

Didn't you mix the module Image and its class Image?

以下代码对我有用(更改isinstance(img,Image.Image)部分):

The following code works for me (change the isinstance(img,Image.Image) part):

import Image, colorsys    

def HSVColor(img):
    if isinstance(img,Image.Image):
        r,g,b = img.split()
        Hdat = []
        Sdat = []
        Vdat = [] 
        for rd,gn,bl in zip(r.getdata(),g.getdata(),b.getdata()) :
            h,s,v = colorsys.rgb_to_hsv(rd/255.,gn/255.,bl/255.)
            Hdat.append(int(h*255.))
            Sdat.append(int(s*255.))
            Vdat.append(int(v*255.))
        r.putdata(Hdat)
        g.putdata(Sdat)
        b.putdata(Vdat)
        return Image.merge('RGB',(r,g,b))
    else:
        return None

a = Image.open('/tmp/a.jpg')
b = HSVColor(a)
b.save('/tmp/b.jpg')

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