Sub-sequence factorization - an effective approach for projective reconstruction under occlusion

CASIA OpenIR > 09年以前成果

	Sub-sequence factorization - an effective approach for projective reconstruction under occlusion
	Lu, L; Hu, ZY
发表期刊	CHINESE JOURNAL OF ELECTRONICS
	2001-04-01
卷号	10 期号:2 页码:189-195
文章类型	Article
摘要	Projective reconstruction is a key step for 3D metric reconstruction from a sequence of images captured by an uncalibrated camera. Due to its inherent robustness, the factorization method is widely used in literatures. However, the main shortcoming of the standard factorization method is that it requires the corresponding points to appear across ALL the images, When large changes of view angles occur in the image sequence, or the scene is easy to be self-occluded, nearly it will be very difficult to have some corresponding points visible across all the images. But it is much easier for only several images to have enough correspondences required by factorization method. These images are called as a subsequence in the whole image set. In this paper, a sub-sequence factorization method is proposed to cope with the problem. The basic principle of the sub-sequence factorization method is to divide a long image sequence into several short subsequences according to its spatial continuity, and the standard factorization method is employed for each subsequence, Then, a novel alignment process is invoked to transform different reconstructions under different subsequences into one reference coordinates system. It is more practical as it only demands that there are enough correspondences in each subsequence, not the whole sequence. The proposed sub-sequence factorization method preserves the robustness aspect embedded in the standard factorization method. The experiments on synthetic and real images validate our proposed new method.
关键词	Stratified Reconstruction Projective Reconstruction Transformation Matrix
WOS标题词	Science & Technology ; Technology
关键词[WOS]	IMAGE STREAMS ; MOTION ; SHAPE
收录类别	SCI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000168485300012
引用统计
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/9835
专题	09年以前成果
作者单位	Chinese Acad Sci, Inst Automat, NLPR, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Lu, L,Hu, ZY. Sub-sequence factorization - an effective approach for projective reconstruction under occlusion[J]. CHINESE JOURNAL OF ELECTRONICS,2001,10(2):189-195.
APA	Lu, L,&Hu, ZY.(2001).Sub-sequence factorization - an effective approach for projective reconstruction under occlusion.CHINESE JOURNAL OF ELECTRONICS,10(2),189-195.
MLA	Lu, L,et al."Sub-sequence factorization - an effective approach for projective reconstruction under occlusion".CHINESE JOURNAL OF ELECTRONICS 10.2(2001):189-195.