基于实时帧迭代反向投影算法的图像序列超分辨率处理

提出一种实时帧迭代反向投影算法实现对图像序列的超分辨率处理。通过建立虚拟全景图像及其迭代权阵,实现迭代反向投影的逐帧处理,从而可实时地对视频图像序列作超分辨率处理。另外还采用了基于光流计算的分层迭代图像配准、双线性插值模拟采样、阈值先验约束、坐标系同步变换等技术来提高算法的有效性。通过对仿真和实际视频序列的处理对算法进行了验证。

Superresolution of image sequences based on real-time frame iterative back-projection algorithm

A real-time frame iterative back-projection algorithm for image sequences superresolution is proposed. By the way of constructing a virtual panorama image and corresponding weight matrix, iterative back-projection(IBP) algorithm of frame to frame is realized. It can deal with real time video sequence. In addition, technologies such as bilinear interpolation simulated sampling, threshold a-priori constrain, hierarchy image registration based on optical flow, synchronous coordinate transformation and so on are employed to enhance the validity of the algorithm. Simulated and real experiments demonstrated the performance of the algorithm.