摄像头采集视频，计算摄像头采集视频的直方图反投影-Camera capture video, capture video camera to calculate the histogram backprojection

计算摄像头采集视频的直方图反投影,本资源包含了视频的采集，鼠标事件，直方图的绘制及投影变换知识。-Calculate the camera to capture video histogram backprojection, the resources include video capture, mouse events, histogram mapping and projection transformation knowledge.

实现CT Shepp-logan头模型的平行束投影及反投影以及扇束等角的投影以及重排方法(Parallel projection and backprojection and fan beam isometric projection and rearrangement method for CT Shepp-logan head model are implemented.)