A Matching Algorithm Based on Correlations Between Matrices of Reference Differences Combining Disparities

• 作者: GUANYepeng GUWeikang LIUJilin TONGLinsu YEXiuqing
• 来源期刊: 电子学报(英文版)
• 学科: 工学
• 关键词: 立体成像 灰色相关 峰值 混合矩阵
• 年，卷（期）: 2004,（3）
• 页码范围: 501-505
• 页数: 5页
• 分类号: TP391.41
• 语种: 中文

摘要

Gray correlation technique is adopted to extract gray correlation peaks as a coarse matching set, which is called multi-peak set. Disparity gradient limited constraint is utilized to optimize the multi-peak set. The unique match can be obtained by calculating cross correlations between the matrices consisting of reference differences and disparities from the multi-peak set. Dynamic limited-search is introduced to reduce the computational complexity. A pair of obvious mark points in the left and right images, respectively, is set as corresponding reference points to determine search direction and scope at first. After the unique match being gotten, we take this match as a new reference point till all feature points in the left (or right) image being matched with points in the right (or left) image. It is proved that the proposed algorithm in the paper is feasible and accurate by 3-dimensional reconstruction on a pair of actual natural images and an object with given 3-D coordinates.