二维面阵的电子稳像与评价方法  

Electronic image stabilization and video quality assessment in 2-dimension-array

作　　者：杨光[1] 王睿[1] 崔玉柱[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院精密光机电一体化教育部重点实验室,北京100191

出　　处：《红外与激光工程》2011年第7期1364-1369,共6页Infrared and Laser Engineering

基　　金：国家973计划(2009CB72400502);国家自然科学基金(60974108);航空科学基金(2009ZC51028);航天支撑技术基金

摘　　要：基于灰度投影原理,采用D细分线性插值和具反馈机制的对数极坐标变换法,检测面阵空间内同时包含平移、旋转和缩放的图像序列当前帧和参考帧之间的运动矢量,采用图像补偿方法,实现了序列图像的稳定输出。文中方法的平移稳像精度可达到1/4像素、旋转稳像精度达0.2°。同时,结合人眼视觉系统及结构相似性原理,提出了一种基于灰度投影的结构相似性的稳像后视频质量评价方法,该评价方法有效地提高了视频质量评价的主客观一致性,比常用的峰值信噪比方法更为灵敏。Based on the gray projection principle,the D-subdivision linear interpolation and log-polar transform（LPT） method with a feedback mechanism were presented to estimate the motion vector between reference frame and current frame from an image sequence which included translation,rotation and zoom in 2-dimension-array space.The presented method was used to compensate video image sequence to make the video image sequence output stable.The proposed approach had the translation precision with 1/4 pixel and the rotation precision with 0.2°.Moreover,combining the human visual system with the principle of structural similarity,the gray projection algorithm structural similarity（GPASSIM） was put forward for video quality assessment after image stabilization.The GPASSIM can improve the consistency between the subjective and objective assessments effectively,which has a higher sensitivity than the common used peak signal to noise ratio method.

关 键 词：电子稳像 灰度投影算法 反馈式对数极坐标变换 视频质量评价 结构相似法 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]