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。
A binarization method for digital camerabased document image was proposed. The method is a combination of the global thresholding, local thresholding and the gray gradient method.
提出了一种数码相机拍摄的文本图像的二值化方法，该方法是全局阈值、局部阈值与灰度梯度方法的结合。
This paper presents a method of determining the type of a VLP based on the gradient histogram and the gray histogram of the image of a VLP.
本文采用一种基于车牌梯度直方图和灰度直方图的车牌类型判定方法。
Results show that the zonal method combined with the conjugate gradient method can solve the equivalent gray absorption coefficient well in the non-gray gases system.
数值模拟结果表明，段法与共轭梯度法结合可以较好地反演非灰系统的当量灰吸收系数。
Entropy thresholding method is an automatic technique for thresholding of digital images based on gray level-gradient co-occurrence matrix and the maximum entropy principle.
它包括二维匹配滤波预处理以增强血管的灰度，以及用灰度-梯度共生矩阵的最大熵阈值化方法。
To solve the problems of collarette extraction in the computer-aided iridology system, a method for collarette extraction based on the max sum of gray gradient is proposed.
针对计算机辅助虹膜诊断中卷缩轮提取问题，提出基于最大能量和提取虹膜卷缩轮的方法。
This paper presents a method of determining the type of vehicle-license-plate based on the gradient histogram and the gray histogram of the image of a vehicle-license-plate.
本文提出一种基于车牌图像梯度直方图和灰度直方图确定车牌类型的方法。
This paper presents a method of determining the type of vehicle-license-plate based on the gradient histogram and the gray histogram of the image of a vehicle-license-plate.
本文提出一种基于车牌图像梯度直方图和灰度直方图确定车牌类型的方法。
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