What are some cross platform and high performance image libraries for image processing (resizing and finding the color/hue histograms). No gui needed. This is for C/C++.
So far I have looked in to
My questions
Your input much appreciated.
OpenCV has quite good performance. It should be sufficient for most cases.
To improve performance, you can also use OpenCV together with Intel IPP, which is however a non-free commercial product. If OpenCV detects that IPP is installed it will use it where possible.
As a third option you can use IPP directly. IPP was designed with high performance (on Intel architectures) as a goal. It is optimized to use the intel SIMD instructions.
You might want to look at IM. It builds on several platforms, and has support for (modular) image file formats, a variety of image representations, and a wide array of transformations and operators. A GUI tool, IMLab, for demonstrating image processing operators based on the IM library is also available.
Oh please, for God's sake, whatever you do, don't forget to look at CxImage - I've used it professionally in globally deployed graphics intensive mobile phone applications, where it performed perfectly and it's so full of features. Do check it out!
We used Accusoft for quite a while, but for very specific reasons we switched to LeadTools, which exists for windows only. Accusoft has a very clear and much more well defined interface than leadtools. Both libraries are very robust and both claim to read more or less all existing file types. Both also have quite responsive support.
There are also: