CAJ | 학술논문

果实轮廓特征的测量提取是了解水果等农作物发育过程中内部生理生态变化的重要手段.该文提出了一种基于 Zernike 矩边缘检测的分水岭算法,并将该算法应用于葡萄果粒的轮廓特征提取.与传统的标记驱动分水岭算法相比,该算法利用 Zernike 矩边缘检测避免了标记对于轮廓的破坏,较好的保护了目标轮廓,从而减少了后续处理,提高了检测效率.最后,将用该算法所得到的轮廓和用传统的标记驱动分水岭算法所得到的轮廓进行比较,验证了该算法的可行性.该算法具有较高的检测效率,相较传统算法提高约6.9%左右,能够满足连续提取葡萄果粒的轮廓特征的要求.该方法可用于实时检测葡萄果粒的几何特征的变化.
과실륜곽특정적측량제취시료해수과등농작물발육과정중내부생리생태변화적중요수단.해문제출료일충기우 Zernike 구변연검측적분수령산법,병장해산법응용우포도과립적륜곽특정제취.여전통적표기구동분수령산법상비,해산법이용 Zernike 구변연검측피면료표기대우륜곽적파배,교호적보호료목표륜곽,종이감소료후속처리,제고료검측효솔.최후,장용해산법소득도적륜곽화용전통적표기구동분수령산법소득도적륜곽진행비교,험증료해산법적가행성.해산법구유교고적검측효솔,상교전통산법제고약6.9%좌우,능구만족련속제취포도과립적륜곽특정적요구.해방법가용우실시검측포도과립적궤하특정적변화.
Image segmentation and the extraction of target contour are key technologies to realize continuous non-destructive detection of crop geometric features based on machine vision, which can help understanding the development of internal physiological and ecological changes in fruits and other crops during growth. In this paper, a new watershed algorithm based on Zernike-moment edge detection was proposed to extract grape fruit contour features. The algorithm first acquired a rough outline of the target based on watershed algorithm marked by Zernike-moment. Then through contour refinement template algorithm, a single-pixel contour was obtained. In the meanwhile, false edges were removed by template algorithm. Finally, contour tracking was conducted to get the real contour of the target. Compared with traditional marker driven watershed algorithm, the proposed algorithm can avoid contour destruction caused by tag via Zernike-moment edge detection. In this way, the target contour is well preserved, so that post-processing can be reduced and detection efficiency is improved. At last, by comparing the contour obtained by the proposed algorithm with that by traditional marker driven watershed algorithm, the feasibility of the algorithm was demonstrated. Because of high performance of detection, the algorithm is able to meet the requirements of continuous contour feature extraction of grape fruit. The method can be applied to the real-time detection of grape fruit geometrical feature changes.