Legacy ImageMagick Discussions Archive

Thanks for the help, all. Yeah, the documentation and my assumptions complicated finding what I knew must be a trivial solution. The problem is both LevelImageColors and LevelColorsImage show up to some extent due to the headers. For using the static compiled library, I only need one .h file include...

After some fiddling around with LevelColorsImage() as the documentation language was a big unclear to me, I found the combination: foreColor.red = QuantumRange; foreColor.green = 0; foreColor.blue = 0; backColor.red = 0; backColor.green = QuantumRange; backColor.blue = 0; LevelColorsImage( imgMagick...

When it reads the bitonal TIFF it already has a color map - one entry is black and one is white. Does it? Which part of your code finds that? I expect you can do this with palettes, if you really want to. I would just SetNoPalette() to ensure it doesn't have a palete, then LevelColorsImage(). You s...

Thanks for the tips. At present I'm using ImageMagick 6.8.9-0 Q16 x86 compiled into static library files on a Windows 7 platform with Visual Studio 2010. I intend to upgrade to 6.9.5-5 or 7.0.2-7 at some point. I'd think these sort of basic image manipulation features would be working in 6.8.x howev...

When it reads the bitonal TIFF it already has a color map - one entry is black and one is white. Maybe my confusion is with misleading information in attributes of the imagemagick image structure that don't apply to the actual pixel payload. So the question then is HOW does one convert the bilevel t...

I'm interfacing with the library via c/c++ function calls, not using command line tools. I"m creating the image from a TIFF blob: #include "magick/MagickCore.h" #include "magick/image.h" Image* imgMagickImage; // an imagemagick image handle ImageInfo* imgMagickInfo= AcquireI...

I've read in a TIFF that is a bitonal compressed image and want to change the colors associated with the white and black, say make it green and blue. To accomplish this I assume I first need to convert the two color image into a full RGB image.. but my attempts at changing the colorspace, changing t...

Is it possible to build imageMagik as a single static .lib file? (as opposed to some 25 lib files) - thus producing a single vc100.pdb (symbol database for debugging on windows) This would be most usefull for simplifying the linker settings for my application that uses imageMagik. It would also enab...

Hm, I seem to have finally figured out the missing magic sauce. Using SetImageAlphaChannel( imgMagickPngImage, AlphaChannelType:: ActivateAlphaChannel ); produces a fully semi-transparent image - that turns on the alpha channel with some value used across the board (56285 in my case). Using SetImage...

When I make that change, I get no transparency what-so-ever - ie its all opaque. Its is causing more things than just activating/not activating alpha channels. Let me add more of the code to show the full set of variables, in case those others are affecting things... MagickCoreGenesis(".",...

Yes, sorry about the confusion of white and black. The ultimate goal is to get the 'white' (or specific color pixels) to be transparent, but for now I'm trying to just get any color to be transparent and the others to be opaque. My current code, that is not working still, is this: // set the transpa...

Cross posting this as the Users forum may be the more appropriate avenue - but to keep the responses in a single thread, respond on the following thread in Developers I'm having issues using the core C API and enabling and then painting an alpha channel via TransparentPaintImage http://www.imagemagi...

I've got my monochrome TIFF in memory and want to add an alpha channel and then apply the correct alpha values via TransparentPaintImage. But I either end up with no alpha (bitonal image again - does ImageMagick optimize on output ?) Or a completely transparent on every pixel image. Currently, I'm t...

I've been working on this problem where I"m handed some CCITT Group 4 compressed image data with the other metadata needed to define an image. I've managed to get the blob into ImageMagick to hopefully process things and convert the image to other formats internally (not to have ImageMagick wri...

I've managed to find a solution to my problem and a guess a the reason. Why doesn't it work as described above? I think ImageMagick does not support pure CCITT compressed data - but then it cannot possibly do so, because needed knowledge is not encoded in the CCITT blob such as the dimensions of the...