如何检查RGB图像是否只包含一种颜色? [英] How to check if an RGB image contains only one color?
问题描述
我使用的是Python和PIL。
我有RGB图像,我想知道那些只包含一种颜色(例如#FF0000)或一些非常接近的颜色(#FF0000和#FF0001)。
我在想使用直方图,但是很难弄清楚3个颜色带
p> ImageStat模块是答案!感谢亚伦。
我使用ImageStat.var获取方差,它工作得很好。
这是我的代码: p>
来自PIL import Image,ImageStat
MONOCHROMATIC_MAX_VARIANCE = 0.005
def is_monochromatic_image src):
v = ImageStat.Stat(Image.open(src))。var
return reduce(lambda x,y:x and y
尝试 ImageStat模块。如果 extrema
返回的值相同,则图片中只有一种颜色。
I'm using Python and PIL.
I have images in RGB and I would like to know those who contain only one color (say #FF0000 for example) or a few very close colors (#FF0000 and #FF0001).
I was thinking about using the histogram but it is very hard to figure out something with the 3 color bands, so I'm looking for a more clever algorithm.
Any ideas?
ImageStat module is THE answer! Thanks Aaron. I use ImageStat.var to get the variance and it works perfectly.
Here is my piece of code:
from PIL import Image, ImageStat
MONOCHROMATIC_MAX_VARIANCE = 0.005
def is_monochromatic_image(src):
v = ImageStat.Stat(Image.open(src)).var
return reduce(lambda x, y: x and y < MONOCHROMATIC_MAX_VARIANCE, v, True)
Try the ImageStat module. If the values returned by extrema
are the same, you have only a single color in the image.
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