中圖分類號：TP391.41
文獻(xiàn)標(biāo)識碼：A
DOI： 10.19358/j.issn.2096-5133.2020.04.007
引用格式：楊濤，羅健欣，金鳳林.增加直線約束的網(wǎng)格化2D相機運動估計算法［J］.信息技術(shù)與網(wǎng)絡(luò)安全，2020,39（4）：36-42.

2D mesh camera motion estimation algorithm with line preserving constraint

Abstract： Camera motion estimation plays an important role in video stablization and stitching.To some extent,the mesh warping model can handle the problem of parallax,which is difficult for traditional 2D motion model with a single affine or homography matrix.A line preserving constraint is added to the CPW(Content Preserving Warping) algorithm,and the weight of the feature point constraint,similarity constraint and line preserving constraint are adaptively ajusted according to the distribution of feature points and the detected lines.Then three types of constraints are expressed as quadratic terms and the camera path is obtained by solving the sparse linear system.The algorithm keeps the linear structure,which is sensitive to human vision when warping image according to the estimated camera motion.As a result,the perceptual visual effect is improved,and the distortion caused by image warping is reduced.

Key words : mesh warping;camera motion estimation;line preserving