Pixel Vaules

This is a discussion on Pixel Vaules within the C++ Programming forums, part of the General Programming Boards category; In Borland C++ Builder how do you access pixel values of an image object. I want to be able to ...

  1. #1
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    Pixel Vaules

    In Borland C++ Builder how do you access pixel values of an image object. I want to be able to convert a picture to grayscale and also count the color values of an image.

    I am also trying to copy a small part of an image to a seperate image object.


    Thanks

  2. #2
    Code Monkey Davros's Avatar
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    You could use TBitmap->Canvas to set pixels. However, if it's speed you're after, use TBitmap->ScanLine, which returns a row (array) of pixels, as a void*. You need to cast the return of ScanLine, and the cast depends on the colour depth of your image.

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    Thanks

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