基于cortexA9开发板的图像采集与梯度幅度求取代码，已调试，好用。-Image acquisition and gradient amplitude based on cortexA9 development board code sequence, have been debug, easy to use.

Opentestbench : an open-source framework to assess the performances of image compression schemes. - the boost library must be installed manually (for instance http://sourceforge.net/projects/boost/files/boost/1.60.0/boost_1_60_0.tar.gz/download)