2) gray level difference
灰度差
1.
The matching process firstly evolved a template selection discipline based on gray level difference segmentation to reduce the sensibility to image noise and illumination changes.
通过基于灰度差分割的模板选择原则降低亮度差和噪声的影响,同时利用线性插值获得面向角度一维灰度投影,最大化模板中的图像边缘信息,从而加快模板匹配过程。
2.
Thus the small gray level difference can be converted to the sha.
设计了在计算机上运行的金相伪彩色系统,使输入的金相灰度图像中各相间微弱的灰度差转化为明显的色调差,显著提高了金相组织鉴别的衬度。
3) grey scale difference methods
灰度差法
4) gray variance
灰度方差
1.
The segmentation method of fingerprint image based on gray variance runs quickly and can be programmed easily.
灰度方差法是一种简单快速的指纹图像分割算法,本文给出一种自适应阈值的灰度方差分割法。
2.
On the basis of the fingerprint image segmentation algorithm based on the gray variance,this paper pre-sents an improved segmentation algorithm for the low quality fingerprint images which has much low gray degrees pix-els.
在基于灰度方差的指纹分割算法的基础上,本文针对低灰度等级占多数的低质量指纹图像,提出了一种改进的指纹图像分割算法。
5) Grey-scale Difference
灰度差分
1.
Combining with image processing technology,interrogation algorithm of Grey-scale Difference Method(GDM) is developed and valued by simulated DPIV auto-correlation images.
该查询系统以DPIV粒子图像为处理对象,结合图像处理技术,采用灰度频数统计法及灰度差分法分别获取速度和粒径信息,实现了速度粒度的同场测量,并利用模拟粒子图像对基于灰度差分法查询算法进行了图像检验。
6) pixel-value difference
灰度差值
1.
The Side Match(SM) inevitably causes abnormality in the pixel-value difference histogram,so there are unusual steps in the histogram of pixel-value differences.
边缘匹配(SM)密写法会引起像素灰度差值直方图统计特性的异常,使灰度差值直方图中出现阶梯,分析者据此可以察觉秘密信息的存在。
2.
It is shown in this paper that SM, which inserts secret data in neighboring pixel-value differences, inevitably causes abnormality in the pixel-value difference histogram.
本文指出SM密写会引起像素灰度差值直方图统计特性的异常,这一性质提供了检测秘密信息存在性和估计嵌入信息量的线索,由此提出一种有效的SM密写分析法。
补充资料：差差
1.犹参差。不齐貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条