Legacy ImageMagick Discussions Archive

Hi Magick!
I was wondering if you have had any success with the Intel Phi and OpenMP 4.0 this summer? I am anxious to hear the results. Thanks!

In case anyone is wondering when OpenMP 4.0 will be released, I did some research and here is what I've found. It looks like the OpenMP 4.0 specification will be completed and released very soon (2nd quarter of 2013), and then I suppose it will take some time before compilers get it implemented corr...

Have you already started to test OpenMP 4.0 with your Intel Xeon Phi coprocessor? I am very interested to hear about your experience, and how the tests are going. Just out of curiosity, did Intel "gift" you a Phi coprocessor? Those things are crazy expensive. =)

Thanks!
-Jonathan

That's very exciting! I'm also using OpenMP in OpenShot to parallelize various things, but I'm not familiar with their new 4.0 release candidate. So, does this mean once OpenMP 4.0 is widely available in compilers, ImageMagick can leverage its existing use of OpenMP pragmas, and with some small adju...

Greetings! I have a quick question regarding OpenCL support in ImageMagick. The next version of OpenShot ( http://www.openshot.org ) is using ImageMagick++ as its image processing platform, and integrating OpenCL to speed up performance on certain methods would be a highly desirable thing. I recentl...

I noticed when using the distort method (with ScaleRotateTranslateDistortion), the bestfit argument does not resize the image to include all pixels involved in the distortion. For example, if you set the final distort arguments (nx,ny) to a non-zero value, the best fit argument does not increase the...

I found that the quantumOperator(Magick::OpacityChannel, Magick::MultiplyEvaluateOperator, alpha_value) method seems to do the trick, and simply multiplies the new alpha percentage to all values in the alpha channel, and works great.

Thanks!
-Jonathan

Using the C++ api, it seems like the opacity() method applies the same alpha value to all pixels in the image. If I use a completely opaque image, I can fade the entire image correctly. However, if the source image already contains alpha, such as a alpha gradient, or transparent corners, etc... the ...

Thanks for the reply. So, if I call the interlaceType(PlaneInterlace) method, I assume it will tell the Image to store the Y,U, and V in separate planes? I am no expert on YUV420P, but it looks like I'm supposed to have more Y values, and less U & V values. Every pixel would have a corresponding...

Greetings! I was wondering if ImageMagick++ has an easy way to convert RGB pixels into YUV420P (planar) values? I need to set the pixel data on a SDL_Overlay, which requires me to convert my Magick::Image pixel data into the YUV420P format. Can ImageMagick++ help me with this conversion? Or should I...

Thanks for the info! I am processing frames of video from FFmpeg just as fast as I can, and was hoping I could pass the pixel array of each frame into ImageMagick, process the image in some way, and then return the pixel array to my program to either be sent to SDL (i.e. to the screen) or back to FF...

Greetings! When using Magick++, I am passing in my array of pixels to the Image constructor. It works fine, except I noticed that the memory footprint of my program doubles when I do this. Is it possible to pass in an array without ImageMagick doubling the memory of my program? I imagine the Image c...