MagickCore can't sync pixel

[magick]

Chances are you are using the Q16 version of ImageMagick. Multiply your color values by 257.

[cam]

hi friend,

I am sure i am using Q8 version and the image i have read from dile is 24bits of depth. Could you post a working way to get a and set a pixel in MagickCore?.

I am pretty newbie in this library and trying to start with the basics.

Thanks for your time.

[fmw42]

you can check your version of IM with

convert -version

[cam]

hello,

It says:

Version: ImageMagick 6.8.7-8 Q8 i686 2013-12-01 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC OpenMP
Delegates: bzlib djvu fontconfig freetype jng jp2 jpeg lcms lqr openexr pangocairo png tiff x xml zlib

I have Q8 version, i really don't know what is happening.

Do you have an explample of what i want to do?. Thank you very much.

[fmw42]

Sorry I only work with the command line and not any of the APIs. Perhaps one of the other users who know more about this API can help further.

[dlemstra]

Your q variable should be a PixelPacket*.

[cam]

changed to PixelPaket* but it still nto working,

I posted all the code of the file, probably it will help

[KayleJacob]

From the example provided, your imagen variable remains in a NULL pointer. It should be assigned by the return value of ReadImage.

Code: Select all

imagen = ReadImage(imagen_info, exception);

The only other issue I see would be the assignment of color values on the PixelPacket. Assuming your working with RGB, you would need to calculate the Quantum color value.

Code: Select all

q->red = 255 * QuantumRange;
q->green = 123 * QuantumRange;
q->blue = 220 * QuantumRange;