Legacy ImageMagick Discussions Archive

I updated the linux version of ImageMagick to match the version on windows (7.0.7-22 Q16), but the behavior does not change

See the documentation at http://www.imagemagick.org/script/command-line-options.php#layers and layer.c MergeImageLayers(). Your chosen method is CompositeLayer but you don't have a "NULL:" image in your list, nor is that method listed as supported by that function. You're right, I doesn't looked ...

fmw42 wrote: ↑2018-02-05T14:22:11-07:00 Please always provide your IM version for the system(s) in involved when asking questions on this forum.

Sorry,

on Windows I use ImageMagick-7.0.7-22-Q16-x64-dll.exe and on Linux I use also 7.0.5-4 Q16 x86_64.

Hello, i use the function MergeImageLayers() to merge the image layers. Under Windows the following example works fine, but on linux I only get an image with a white background where the file size is about the half of the file size which is created under windows. Image *loadedImage = ReadImages ...

After I changed the xml file i got the following on the command line: >convert expdf:pdf_test.pdf info: pdfimages version 3.04 Copyright 1996-2014 Glyph & Cog, LLC Usage: pdfimages [options] <PDF-file> <image-root> -f <int> : first page to convert -l <int> : last page to convert -j : write JPEG ...

Thanks for the hint
Are there C API calls too?

The information of the image stands in the dictionary of the PDF. <</BitsPerComponent 8/ColorSpace/DeviceRGB/DecodeParms<</Blend 1/ColorTransform 1/Colors 3/Columns 1024/HSamples[1 1 1 1]/QFactor 0.0/Rows 768/VSamples[1 1 1 1]>>/Filter/DCTDecode/Height 768/ImageName/ab123.jpg/Intent ...

But I need to get the image out from the PDF with IM, is there an other way?
The requirement is to use only the IM C API for that

Hello, I want to get the image size from an image which is embedded in a PDF file. The size of the image itself is 1024 x 768. If a open the PDF in Acrobat Reader, mark the image and copy it to e.g. paint, then the image size is correct (1024x768) However, if I use the API function PingImage, then ...

Hello,

I've some problems to migrate a used function (convolveImage) from IM 6 to IM 7.
The old function requires a matrix but the new requires some KernelInfo stuff. I don't know how to fill these up

Please, could someone help

Thanks in advance

Hello,

under "Usage" I only find examples for IM 6.
However, are there examples for IM 7 too?

Thanks in advance