This paper bases on the Subbarao’s algorithm, and uses the gray gradient method in estimating the depth of defocus image.
本文在Subbarao测距算法的基础上,将灰度梯度法用于散焦图像的深度估计中。
参考来源 - 基于灰度梯度的散焦图像测距算法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
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。
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。
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