不同源图像间由于灰度和分辨率水平上的显著差异，使得两图像间的配准问题十分困难。
Because of difference on the gray - level and resolution - level between multi - source images, it is very difficult to register two images.
结果表明，相同噪声水平条件下，灰度噪声对测量精度的影响大于量化噪声的影响。
The results show that the influence of the gray noise on the measurement precision is greater than that of the quantification noise.
该方法由地震图扫描输入、灰度规一化、水平线消除、时标和起震点提取及智能跟踪与细化等步骤组成。
It includes seismogram input by scanner, grey normalization, horizontal line removal, extractions of time marks and start time of earthquake, and intelligent tracking and thinning.
权值的取值与值域块在图像中的位置有关，同时与值域块的灰度变化水平有关。
The weighted value is connected with the position of value range block in the image and the grey changing level of value range block. The way we chose is consistent with HVS characteristic.
联合使用车底阴影、边缘信息、轮廓对称、灰度对称、水平线对称等车辆先验知识，提出一种基于特征的车辆检测方法。
Prior knowledge of the vehicles, such as shadows underneath the vehicles, rich edge information, contour symmetry, gray level symmetry, horizontal line symmetry and etc, is combined.
另一种方法是分别得到横竖条码在水平和垂直方向的一维灰度投影曲线，根据它们的相关性判断两幅图像是否匹配。
The other method uses 1-D cyclostyle matching algorithm to obtain horizontal and erect gray scale projection curves of two list images, then compares with them if its not homology.
水平集方法的速度函数定义根据所利用的图像信息可以分为两大类：基于图像梯度和基于图像灰度信息。
The speed function defined in Level set method can be divided into two classes: function based on the gradient of image and function based on the image gray.
水平集方法的速度函数定义根据所利用的图像信息可以分为两大类：基于图像梯度和基于图像灰度信息。
The speed function defined in Level set method can be divided into two classes: function based on the gradient of image and function based on the image gray.
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