grayness中文什么意思
灰度
灰色度
- grayness loca: 灰色轨迹
- grayness after rubbing: 撩后变质
例句与用法
更多例句： 上一页 - The hurley side of the family all tend towards premature grayness , but our caroling would have none of that , so she bought a rich brown hair - coloring agent and , after messing up the bathroom totally , emerged looking gorgeous , with brand new hair
哈雷这家人都倾向于未老头发先白，但我们的卡罗琳娜将不原这样，因此她买了一管丰富的棕色染发剂，在整个搞乱了浴室之后，她从里边出来，一头崭新的亮发，光彩照人。 - 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
