函数使用python模块图像删除图像中的红色
我试图从网上自学python。以前没有prg经验。需要关于如何使用python中的“image”模块编写函数以从imgae中删除red的帮助。下面是我试图编写的代码…请提供帮助函数使用python模块图像删除图像中的红色,python,image,colors,rgb,Python,Image,Colors,Rgb,我试图从网上自学python。以前没有prg经验。需要关于如何使用python中的“image”模块编写函数以从imgae中删除red的帮助。下面是我试图编写的代码…请提供帮助 import image img = image.Image("luther.jpg") newimg = image.EmptyImage(img.getWidth(),img.getHeight()) win = image.ImageWin() def no_red(): for col in ra
import image
img = image.Image("luther.jpg")
newimg = image.EmptyImage(img.getWidth(),img.getHeight())
win = image.ImageWin()
def no_red():
for col in range(img.getWidth()):
for row in range(img.getHeight()):
p = img.getPixel(col,row)
newred = 0
newgreen = p.getGreen()
newblue = p.getBlue()
newpixel = image.Pixel(newred,newgreen,newblue)
return newimg.setPixel(col,row,newpixel)
print (newimg.getPixel(45,52))
win.exitonclick()
我做错了什么?任何指导都会有帮助:)
关于>>对于循环,您必须在
内调用newimg.setPixel
,否则它将只替换图像末尾的一个像素:
def no_red():
for col in range(img.getWidth()):
for row in range(img.getHeight()):
p = img.getPixel(col,row)
newred = 0
newgreen = p.getGreen()
newblue = p.getBlue()
newpixel = image.Pixel(newred,newgreen,newblue)
newimg.setPixel(col,row,newpixel)
您也没有在任何地方呼叫no\u red
。我建议改为这样写:
def no_red(image):
new_image = ... # make a copy of image
# original code that removes red subpixels
return new_image
然后打电话:
new_image = no_red(original_image)
在我看来,这是最简单的方法如果您不想陷入循环,您可能会发现以下几行更有用。以下几行从图像测试中删除红色
def removeColour():
img = Image.open('test.png').convert('RGB')
source = img.split()
R, G, B = 0, 1, 2
out = source[R].point(lambda i: i * 0)
source[R].paste(out, None, None)
img = Image.merge(img.mode, source)
img.save('testNoRed.png')
img.show()
def removeColour():
img = Image.open('test.png').convert('RGB')
source = img.split()
R, G, B = 0, 1, 2
out = source[R].point(lambda i: i * 0)
source[R].paste(out, None, None)
img = Image.merge(img.mode, source)
img.save('testNoRed.png')
img.show()