c++ read image pixels

I want a c+开发者_JAVA百科+ Code to read every pixel from an image file. and i want to save the pixels like: r[] g[] b[]

does somebody know how to do this?

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The answer depends on the format of the image file. Is it a format which contains raw RGB data (such as uncompressed TGA)? Is it a YUV image? Is it a compressed image such as JPEG or PNG?

There are already plenty of C++ libraries out there which can read a wide variety of image file formats, and then provide the pixel-level access you require. Take a look at Adobe's GIL, or CImg for example.

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There are many freely available libraries for reading different image file formats. Since you're using C++ you might want to look at Adobe's Generic Image Library (GIL) or even OpenCV.

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This will sort you out, very easy to use and 'low level' image library: http://easybmp.sourceforge.net/

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Two libraries that I've used that jump to mind are:

• ImageMagick
• libGD

These libraries can handle a wide variety of image formats, depending on what you need.