边检测 meaning in English
edge detection
Examples
- Secondly , the precision of diffraction field of the edges of targets has been greatly advanced by improving the original method of detecting edges
其次，改进了原先的棱边检测方法，使得棱边绕射场的计算精度大大提高。 - The function of automatic tracking the cutting point : if you need you can install inspection equipment of the glass edge , so that it can automatic track the cutting point if the glass wander
落刀点自动跟踪：如用户需要，可安装玻璃边检测装置，实现玻璃带跑偏时落刀点自动跟踪。 - The work in this thesis is based on the combination of medicine - ultrasonics and the image processing . with the computer as an platform , several kinds of processing were conducted on the b images of hearts captured in clinic , such as image enhancement and edge detection . and pertinent information from the b images were extracted and used in synthesizing the m images of the heart in arbitrary directions
本论文将医学超声学与数字图象处理两门学科结合起来，以计算机为平台，利用数字图象处理方法，对心脏的b型图象进行了图象增强、边缘边检测等处理，并从b型图象上提取出相关信息，合成了全方位的m型图象。 - Entropy of an image is to express the smoothness or homogeneity of the image . while computing in a local window , if there exist edges , the local image will not be homogenous , variation of the grayness will be sharp and the entropy obtained will be low . otherwise , the entropy will be high . given the threshold of entropy , it can be determined whether or not exist edges . because entropy operator is sensitive to noise , the effect is bad if it is directly used to detect edges . in view of the deficiency , the paper comes up with an edge detection method in which entropy operator is combined with noise removal . if the entropy computed is higher than the threshold , it will be necessary to determine whether it is caused by noise or by edges . thus edge detection and noise removal can be made at the same time . with this method satisfactory effect has been achieved by experimenting upon image with low ratio of signal to noise
图像的熵用来刻划图像的平滑性或均匀性.在图像的局部窗口中计算时，如果窗口中存在边界，则窗口中的图像不均匀，其灰度变化急剧，计算出的熵小；反之熵大.设定熵的阈值，即可判断是否存在边界.由于熵算子对噪声很敏感，直接用它进行边界检测，效果很差.文中针对这一缺陷，提出将熵算子与去噪相结合的边界检测法，如果计算出的熵大于阈值，要判断是噪声的出现所引起，还是边界的出现所引起，这样，边检测边界边去噪声.用该方法对信噪比较低的图像进行实验，得到了满意的效果