基于SIFT匹配的多视点立体图像零视差调整  

Zero-disparity adjustment of multiview stereoscopic images based on SIFT matching

作　　者：李实秋[1] 雷建军[1] 周志远[2] 张海龙[3] 范晓红[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]天津津航技术物理研究所,天津300308 [3]中国电力科学研究院,北京100192

出　　处：《红外与激光工程》2015年第2期764-768,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(61271324;61202266;61101224;61202380);天津市自然科学基金(12JCYBJC10400;12JCQNJC00300;12JCQNJC00500)

摘　　要：针对多视点自由立体显示系统,提出一种基于SIFT匹配的平行多视点立体图像零视差调整方法。首先,通过SIFT变换提取图像特征关键点、对特征关键点进行匹配,获得精确匹配点。然后,运用频率调和显著性模型计算场景的视觉显著性、提取显著性掩膜,以筛选匹配点作为零视差调整的关键点。最后,依据SIFT匹配点计算视点间视差值,并基于视差调整原理对多视点立体图像进行零视差调整。实验结果表明,所提出的方法适合多视点自由立体显示系统,零视差调整后的多视点立体图像具有良好的自由立体显示效果。A zero-disparity adjustment method based on SIFT matching was proposed for multiview stereoscopic images using in autostereoscopic display system. First, SIFT was introduced for pixel matching between adjacent views. Then, the result of SIFT matching was filtered by saliency mask which was extracted using frequency-tuned saliency model, and the key-point of disparity control was selected.Finally, the disparity between the neighboring views was computed based on SIFT matching points, and zero-disparity adjustment was conducted based on the principle of disparity control. The disparity of selected key-point was adjusted to zero. Experimental results demonstrate that the proposed method can effectively adjust the disparity of multiview stereoscopic images and generate vivid and comfortable 3D scenes for autostereoscopic display.

关 键 词：多视点立体图像 零视差调整 SIFT匹配 自由立体显示 

分 类 号：TN911.73[电子电信—通信与信息系统]