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用数字图像相关法测量线阵CCD的象元位置 被引量:2
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作者 刘栋斌 《光学精密工程》 EI CAS CSCD 1993年第5期154-160,共7页
本文研究了应用数字图像相关法测量线阵CCD器件各象元相对位置的方法。通过实际的CCD象元图像,对各种相关度量法的匹配精度和抗干扰能力进行了分析对比,选出了适当的相关度量法。为了解决匹配速度问题.本文介绍了SSDA法在本系统中的应用... 本文研究了应用数字图像相关法测量线阵CCD器件各象元相对位置的方法。通过实际的CCD象元图像,对各种相关度量法的匹配精度和抗干扰能力进行了分析对比,选出了适当的相关度量法。为了解决匹配速度问题.本文介绍了SSDA法在本系统中的应用,对其门限选择问题进行了研究并提出了确定门限的方法。文中还提出了一种两级模板寻优的快速匹配方法。在硬件方面,设计了TMS320C25加速处理板与主机构成主从式高速处理系统。 展开更多
关键词 相关 匹配 电荷耦合器件 象元图像
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A B-spline active contour model based on finite element method 被引量:1
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作者 成思源 《Journal of Chongqing University》 CAS 2003年第1期62-65,共4页
A B-spline active contour model based on finite element method is presented, into which the advantages of a B-spline active contour attributing to its fewer parameters and its smoothness is built accompanied with redu... A B-spline active contour model based on finite element method is presented, into which the advantages of a B-spline active contour attributing to its fewer parameters and its smoothness is built accompanied with reduced computational complexity and better numerical stability resulted from the finite element method. In this model, a cubic B-spline segment is taken as an element, and the finite element method is adopted to solve the energy minimization problem of the B-spline active contour, thus to implement image segmentation. Experiment results verify that this method is efficient for B-spline active contour, which attains stable, accurate and faster convergence. 展开更多
关键词 active contour mode B-SPLINE finite element method
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