The histogram is the probability density function of the image level. It gives quite a few characteristics of the image.
直方图是图像灰度级的概率密度函数，它给图像提供了许多特征。
Ordinary document image retrieval algorithms can be classed into two classes, character content (OCR) based method and image level feature based method.
提出一种综合利用文档图像的段落特征和局部像素分布相对差特征进行文档图像检索的方法。
On the basis of existing AMLE algorithm, this algorithm saves the bound data of image level sets and uses the method of processing scale by scale to reconstruct image.
该算法在原有AMLE算法的基础上，保留图像水平集的边界数据，采用逐层处理方法实现图像重构。
On the basis of existing AMLE algorithm, this algorithm saves the bound data of image level sets and uses the method of processing scale by scale to reconstruct image.
该算法在原有AMLE算法的基础上，保留图像水平集的边界数据，采用逐层处理方法实现图像重构。
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