CAJ | 학술논문

针对边界跟踪算法中在角点附近丢失边界信息的问题，对待检测边界中角点的判别和检测方法进行了研究。分析了边界搜索中所扩展的邻域的半径和角点位置的关系，提出了角点存在判据，给出了角点存在区间。提出了寻区间法角点检测算法，用5个已知边界点之间的关系，判断出角点存在的邻域，通过选取合适的邻域半径，使角点存在区间向角点收敛。对测试图像和人侧面轮廓图像的边界利用所提出的算法进行跟踪，测试图像的边界点从19个增长为37个，人侧面轮廓图像边界点从13个增长为21个，新算法准确地检测到轮廓角点和后续种子点，使边界跟踪能够反映所有的边界信息。
침대변계근종산법중재각점부근주실변계신식적문제，대대검측변계중각점적판별화검측방법진행료연구。분석료변계수색중소확전적린역적반경화각점위치적관계，제출료각점존재판거，급출료각점존재구간。제출료심구간법각점검측산법，용5개이지변계점지간적관계，판단출각점존재적린역，통과선취합괄적린역반경，사각점존재구간향각점수렴。대측시도상화인측면륜곽도상적변계이용소제출적산법진행근종，측시도상적변계점종19개증장위37개，인측면륜곽도상변계점종13개증장위21개，신산법준학지검측도륜곽각점화후속충자점，사변계근종능구반영소유적변계신식。
Aiming at the problem for losing boundary information within the region near the cor‐ner point during boundary tracking ,the method for judging and searching corner point was studied .On the basis of analyzing the relationship between the radius of extended neighbor‐hood and the location of the corner ,the corner point judging rule was proposed and the range in which corner point existed was deduced .The region searching algorithm was proposed to de‐tect the corner point in the deduced range .From the relationship of 5 know n boundary points , the algorithm estimated the neighborhood in which the corner point was included ,and made the neighborhood contracted to the corner point by selecting appropriate radius .Examinations w ere performed at test images and side face image .Results show that the boundary points in‐crease form 13 to 21 for test image and from 19 to 37 for side face image ,the new method can detect the corner point accurately and can also detect right seeds so that the boundary tracking algorithm can include all contour information .