Then the characteristics of low light level image and infrared image are analyzed in detail . this is the theory basis of the night vision image compression , enhancement and fusion algorithm 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。
The principle of the template - based method is that the searched image is covered by the template image , and the template is moved up and down to look for a sub - image which is identical with the template image 基于模板的方法的原理是把模板覆盖在搜索图上、并在搜索图中上下移动，寻找与模板一致的子图。
We get the candidate area by integrating the svm results of different scales , and use density - based candidate area confirmation and image smoothing postprocess to get the final text area 根据对多幅子图的分类结果进行图像融合来生成候选区域,然后逐步对候选区域进行基于密度的区域确认和平滑后处理等步骤确定最终的文本区域。
While sub - images in the high resolution ratio are details of original image . this progress is called image wavelet decomposition . reverse wavelet transform put these sub - images together so that original image is recovered 而小波的逆变换即是将这些不同分辨率上的子图组合起来以恢复出原始图像，这个过程叫做图像的小波重构。
The image is divided into a number of sub blocks , each with its associated color histogram and image entropy . theoretics and experimental results show that the techniques can help to make similarity matching more precise . 4 多精度色彩匹配将图象划分成了许多子图块，每一子图都具有其相应的色彩直方图与图象墒，作为细粒度匹配的基础。
