摘要图像增强是图像处理的基本技术之一,它把原先不清晰的图像变得清晰,或抑制图像的某些特征从而使另外的一些特征得到某些增强。其主要目的是使处理后的图像的质量得到改善,增加图像的信噪比,或者增强图像视觉效果。 本文主要研究图像增强技术, 文中采用 matlab工具,以车牌图像增强为背景,研究了各种图像增强方法。对于灰度图像增强,论文分析比较了直方图均衡化方法、频域低通高通滤波以及采用高通滤波和直方图均衡化结合方法的图像增强效果。对于彩色图像增强,论文首先采用了彩色图像锐化方法,然后分别采用单尺度 SSR 和多尺度 MSR 的 retinex 图像增强方法。 论文进行了 matlab 编程,对图像增强效果进行了比较分析,所做工作为车辆图像增强研究提供参考。 31127 毕业论文关键词 图像增强;直方图均衡;retinex;SSR;MSR
Title Image Enhancement Technology Research
Abstract Image enhancement is one of the basic techniques of image processing, mage enhancement is one of the basic techniques of image processing, it transforms the not clear original image becomes clear, or inhibit certain features of the image so that a number of additional features to give some enhanced. The main purpose of Image enhancement is to make the image quality is improved , or increase signal to noise ratio of the image and enhance visual effect. The paper which uses matlab as a tool studys image enhancement, which studys a variety of methods of image enhancement in the background of the license plate image enhancement. For a grayscale image enhancement, the paper analyzes and compares the histogram equalization method, frequency domain lowpass and highpass filter high-pass filtering and histogram equalization method combined image enhancement. For color image enhancement, the paper starts with a color image sharpening method, and then study single-scale retinex of SSR and multiscale retinex of MSR image enhancement. Papers were matlab program for image enhancement were compared, the work provides a reference for the vehicle image enhancement research.
Keywords Image enhancement; Histogram equalization; Retinex ; SSR; MSR
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