CAJ | 학술논문

为了准确定位贴片后印刷电路板(PCB)上电子元件的位置,提出了一种基于方差环形投影的图像快速匹配算法.先将输入图像用小波变换分解为不同尺度的低频图像,之后利用方差环形投影特征做序贯相似性检测得到一系列可能的匹配点,最后在这些点上作相关匹配运算,获得其准确的位置.实验证明该算法大大减少了计算量又保持了匹配的精度,而且对图像的旋转不敏感.
위료준학정위첩편후인쇄전로판(PCB)상전자원건적위치,제출료일충기우방차배형투영적도상쾌속필배산법.선장수입도상용소파변환분해위불동척도적저빈도상,지후이용방차배형투영특정주서관상사성검측득도일계렬가능적필배점,최후재저사점상작상관필배운산,획득기준학적위치.실험증명해산법대대감소료계산량우보지료필배적정도,이차대도상적선전불민감.
To locate the mounted electricity components in the Printed Circuit Board(PCB),a fast image matching algorithm based on variance ring projection is proposed. Firstly, an input image is decomposed into different low levels sub-image with the walvelet-transform.Then, after getting the variance ring projection feature,the Sequential Similarity Detection Algorithm(SSDA) is exploited to represent some potential matching points. Finally, based on these points, a precisely locating phase using the correlation is introduced to get the right position. Experimental results show this method significantly reduces the computational burden and is rotation-invariant, while the precision remained fine.