So, to improve the image visions and to provide computational support, a novel adaptive image enhancement technique has been proposed in this paper, named as genetic algorithm based adaptive histogram equalizat
The CLAHE algorithm has three major parts: tile generation, histogram equalization, and bilinear interpolation. The input image is first divided into sections. Each section is called a tile. The input image shown in the figure is divided into four tiles. Histogram equalization is then performed on...
/* This function performs clipping of the histogram and redistribution of bins. * The histogram is clipped and the number of excess pixels is counted. Afterwards * the excess pixels are equally redistributed across the whole histogram (providing * the bin count is smaller than the cliplimit). *...
第七步:使用改进的PDF计算每个子直方图的累积密度函数(CDF)。然后使用每个子直方图的CDF计算每个子直方图的映射函数; 第八步:最后,得到了新的增强图像通过结合每个子直方图; 第九步:然后计算每个图像的适应值。这种方法一直持续到满足终止条件或适应度曲线收敛为止。
It helps in reducing histogram spikes. The modifified algorithm is used with CLAHE and improves its overall performance. 为什么不用DWT:由于下采样,DWT会受到混叠效应的影响,并可能导致重建图像中出现伪影。因此,小波变换不适用于边缘检测和模式识别(DWT suffers from aliasing effects owing to down-sampling ...
《A new adaptive contrast enhancement algorithm for infrared images based on double plateaus histogram equalization》提出自适应双平台直方图均衡算法,一种基于双平台直方图均衡的红外图像自适应对比度增强算法。 传统的双层斜展直方图均衡化算法使用恒定阈值,不能在不同的场景中改变阈值,使其实际使用是有限的。在提出...
《A new adaptive contrast enhancement algorithm for infrared images based on double plateaus histogram equalization》提出自适应双平台直方图均衡算法,一种基于双平台直方图均衡的红外图像自适应对比度增强算法。 传统的双层斜展直方图均衡化算法使用恒定阈值,不能在不同的场景中改变阈值,使其实际使用是有限的。在提出...
Nat- uralness preserved enhancement algorithm for non-uniform illumination images. IEEE Transactions on Image Process- ing, 22(9):3538–3548, 2013. 2 [33] Tao Wang, Yong Li, Jingyang Peng, Yipeng Ma, Xian Wang, Fenglong Song, and Youliang Yan. Re...
The adaptive histogram equalization defogging algorithm [3, 4] is an improvement on the basic histogram algorithm, which can indistinguishably improve the image contrast, suppress the slope of the transformation function to some extent, and avoid the phenomenon that rising too fast resulting weak ...
2) adaptive histogram equalization 自适应邻域灰度增强 1. In the same time, theadaptive histogram equalizationis used to enhance the details in the image. 同时对图像进行自适应邻域灰度增强,达到了对图像细节进行增强的目的,提高了图像的质量。