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拆分及合并图像通道

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Lines changed: 1 addition & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -79,6 +79,4 @@ Intel Media SDK现在可以被我们的videoio模块用来进行硬件加速的`
`79`	`79`
`80`	`80`	`- 支付宝`
`81`	`81`	`- <img src="data/alipay_donate.jpg" width = "200" height = "200" alt="alipay_donate" />`
`82`		`-`
`83`		`-- 比特币`
`84`		`-- 以太坊`
	`82`	`+`

Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -7,15 +7,17 @@`
`7`	`7`
`8`	`8`	`#`
`9`	`9`	`b,g,r=cv2.split(img)#比较耗时的操作,请使用numpy 索引`
`10`		`-img=cv2.merge(b,g,r)`
`11`		`-`
	`10`	`+img=cv2.merge((b,g,r))`
`12`	`11`	`#`
`13`	`12`	`b=img[:,:,0]`
`14`	`13`
`15`	`14`	`#使所有像素的红色通道值都为 0,你不必先拆分再赋值。`
`16`	`15`	`# 你可以直接使用 Numpy 索引,这会更快。`
`17`	`16`	`img[:,:,2]=0`
`18`	`17`
	`18`	`+#保存到文件,看下效果`
	`19`	`+cv2.imwrite(filename='split_color2.jpg',img=img)`
	`20`	`+`
`19`	`21`
`20`	`22`
`21`	`23`

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