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How to get RGB value of a pixel from a CGImageRef object?

原文 2009-07-08 06:32:30 3 1 iphone/ core-graphics/ pixel

I'm trying to get an RGB value of a pixel from a CGImageRef object. I know that I need to create a context or something but, how do I do this?

1 answers

这篇文章向您展示了如何做到这一点。

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Related Question How to get CGImageRef from CGContextRef? How can I get a CGImageRef from a file? How to get raw image data (RGB value of each pixel) from iPhone camera when using in video capture mode? How to get the RGB values for a pixel on an image on the iphone How to NSLog pixel RGB from a UIImage? How to get RGB color value from UISlider How can I get RGB value of pixel at specified point on the camera screen? How to change the result to print the RGB pixel value in Objective C How to obtain a CGImageRef from the content of an UIView? How exactly to make a CGImageRef from an image on disk

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How to get RGB value of a pixel from a CGImageRef object?

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1 answers

solution1 3 ACCPTED 2009-07-08 06:52:04

solution1
3 ACCPTED 2009-07-08 06:52:04