And Histogram Equalization的意思|示意

After the gray transformation and the histogram equalization, these images were filtered by a frequency-domain homomorphic filter, hence noises in the images were greatly reduced.

利用自开发软件，对图像进行灰度变换和直方图均衡化处理后，采用频域同态滤波的方法对图像进行降噪滤波处理。

Fundus image preprocessing system consists of Color image processing, image geometric transformation and the image histogram equalization, the image smooth and sharpen enhancement function.

眼底图像的预处理系统包括：彩色图像的处理、图像的几何变换以及图像的直方图均衡、图像的平滑化及锐化处理等增强功能。

Up to the present, the research on this subject mainly focuses on the local histogram equalization and atmospheric scattering model.

目前对有雾图像的增强和恢复研究主要集中于局部直方图均衡化和大气散射模型两个方面。

This paper focuses on the study of Local Area Histogram Equalization (LAHE) and its applications in pneumoconiosis X-ray films enhancements.

本文主要研究了局部直方图均衡化（LAHE）及其修正算法在尘肺X线图像增强中的应用。

Then, in HSI space, the method based on adaptive histogram equalization (AHE) is introduced to adjust the saturation and intensity. And then, the contrast is regulated further.

在HSI空间中，采用自适应直方图均衡（AHE）方法实现了图像饱和度和亮度的调整，并进一步修正了图像的对比度。

Methods Based on improving of traditional histogram equalization, the proposed method adopts the minimum mean brightness error bi-histogram equalization and an effective intersected point.

方法在改进常规直方图均衡化算法的基础上，以最小灰度平均值误差二元直方图均衡化为基础，引入另一个有效分割点。