计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
16期
173-176
,共4页
王小鹏%房超%雷涛
王小鵬%房超%雷濤
왕소붕%방초%뢰도
角点匹配%平移旋转%确定性退火%仿射变换
角點匹配%平移鏇轉%確定性退火%倣射變換
각점필배%평이선전%학정성퇴화%방사변환
corner matching%translation and rotation%deterministic annealing%affine transform
在图像角点匹配过程中,目标图像往往存在平移旋转现象,直接影响匹配效果,为此提出了一种平移旋转图像的角点匹配方法。该方法首先利用角点检测生成自相关矩阵的梯度信息与仿射变换相结合,构造确定性退火算法中的自由能函数,然后对该自由能函数进行优化,获取待匹配角点间的仿射变换参数,最后利用该变换参数实现角点匹配。实验结果表明,该方法能够在目标图像发生平移旋转的情况下,有效实现角点匹配。
在圖像角點匹配過程中,目標圖像往往存在平移鏇轉現象,直接影響匹配效果,為此提齣瞭一種平移鏇轉圖像的角點匹配方法。該方法首先利用角點檢測生成自相關矩陣的梯度信息與倣射變換相結閤,構造確定性退火算法中的自由能函數,然後對該自由能函數進行優化,穫取待匹配角點間的倣射變換參數,最後利用該變換參數實現角點匹配。實驗結果錶明,該方法能夠在目標圖像髮生平移鏇轉的情況下,有效實現角點匹配。
재도상각점필배과정중,목표도상왕왕존재평이선전현상,직접영향필배효과,위차제출료일충평이선전도상적각점필배방법。해방법수선이용각점검측생성자상관구진적제도신식여방사변환상결합,구조학정성퇴화산법중적자유능함수,연후대해자유능함수진행우화,획취대필배각점간적방사변환삼수,최후이용해변환삼수실현각점필배。실험결과표명,해방법능구재목표도상발생평이선전적정황하,유효실현각점필배。
During the course of image corner matching, the translation and rotation of object image often affect the matching results. A corner matching method is proposed based on deterministic annealing. Harris corner detection is used to extract the corner points respectively from object and matching image, and the gradient information of the corner points from the autocorrelation matrix are also calculated. The free energy function of deterministic annealing is constructed by combining the gradient information and the affine transform. The optimization affine transform parameters are obtained by optimizing the free energy function. Corner matching between object and matching image are complemented through the affine trans-form. Simulations show that this method can effectively achieve the corner matching when the object image occurring translation and rotation.