CAJ | 학술논문

由于视频帧数量较大，视频序列拼接时容易造成拼接误差大、耗时较多，为有效解决此问题，提出一种基于自适应关键帧的视频序列拼接方法。将固定间隔采样帧作为关键帧并对其进行特征点提取．利用特征点匹配结合RANSAC鲁棒估计算法得到关键帧间单映矩阵，依此计算关键帧间重叠区域，按照重叠区域比例结合折半排序方法重新定位关键帧，将此关键帧作为基准帧，重复帧采样、重叠区域确定、定位后续所需关键帧过程，直至关键帧提取完毕，最后，利用级联单映矩阵和加权融合实现视频序列无缝拼接。实验验证了该方法的有效性。
유우시빈정수량교대，시빈서렬병접시용역조성병접오차대、모시교다，위유효해결차문제，제출일충기우자괄응관건정적시빈서렬병접방법。장고정간격채양정작위관건정병대기진행특정점제취．이용특정점필배결합RANSAC로봉고계산법득도관건정간단영구진，의차계산관건정간중첩구역，안조중첩구역비례결합절반배서방법중신정위관건정，장차관건정작위기준정，중복정채양、중첩구역학정、정위후속소수관건정과정，직지관건정제취완필，최후，이용급련단영구진화가권융합실현시빈서렬무봉병접。실험험증료해방법적유효성。
In order to solve the problems of time consuming and the mount of frames in video mosaic, a mosaic method of video sequence based on adaptive keyframes was proposed. The features of keyframes which were extracted by fixed sampling period were extracted. With the RANSAC robust estimation for homography matrix,the overlaps of keyframes were estimated. According to the overlaps ratio and binary search ,the reorientation of keyframes was completede, repeating above processing procedure,the final keyframes were extracted.finally, Finally ,with the cascades of homography matrix ,the seamless mosaic is rendered by the image blending. The experiment demonstrates this algorithm＇s efficiency.