灰度特性 meaning in English

gamma characteristic
gray-tone response

In view of theproperties of infrared thermal images , narrow - range zero - crossing edge detection method was applied to detect the edges of welding flaws and good results were obtained
针对红外热图象的灰度特性，提出了窄范围二阶导数过零边缘检测用于焊接缺陷的边缘提取，获得了较好的效果。
The paper abstracts out the palmprint mainline characteristic owing to palmprint image gradation by the gray value characteristic property method , defining the online palmprint characteristic space with the form of the polar coordinate and compressing the dimension , at last we use the neural network to accomplish the design of identification authentication system with the on - line palmprint as the mating algorithm . based on this , a fast and reliable system of identification authentication can be built
采用基于掌纹图像灰度特性的方法提取出掌纹的主线特征,以极坐标的形式定义在线掌纹的特征空间并降维处理,最后用神经网络作为匹配算法完成在线掌纹身份验证系统的设计,以此为基础建立了快速、可靠的新型身份认证系统。