【Key words】 CBIR； color histogram； two-dimensional histogram； information entropy；
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An algorithm for night vision image enhancement based on dualistic sub-image and two dimensional histogram analysis is brought forward in this dissertation.
提出了基于二维直方图分析的二元子图夜视图像增强处理算法，对微光图像与红外图像进行了增强处理。
参考来源 - 夜视图像基于小波分析的压缩编码与融合处理研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A novel image enhancement technique suitable for low light level image, dualistic sub image enhancement based on two dimensional histogram analysis and histogram equalization, is presented.
提出了基于二维直方图分析的二元子图微光图像增强处理算法。
In the paper, added the gradient information into the image gradation histogram, proposed the gradation-gradient two-dimensional histogram.
通过对图像的灰度直方图中加入它的梯度信息，提出了灰度-梯度的二维直方图。
The concept of the two-dimensional bound histogram is proposed, and an automatic threshold selection method based on that histogram is presented.
提出了二维属性直方图的概念，进而提出了一种基于二维属性直方图的图像自动阈值化方法。
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