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