畢業論文

打賞
當前位置: 畢業論文 > 電子通信 >

直方圖均衡化彩色圖像增強算法研究

時間:2019-05-17 20:16來源:畢業論文
介紹了四種彩色圖像直方圖均衡化算法:基于RGB彩色空間的顏色通道獨立增強算法、基于HSI彩色空間I分量增強算法、彩色空間非線性重組的增強算法和快速顏色保持彩色圖像增強算法

摘要:近年來,彩色數字圖像信息隨著多媒體技術的不斷完善被廣泛地應用于各種領域。彩色圖像增強是一種非常重要的預處理過程,在改善彩色圖像質量和后續圖像分析中起到了關鍵作用。不同于灰度圖像增強,彩色圖像增強過程中,不僅要加強圖像的判定和識別效果,還要避免圖像增強后引起的色彩失真。35434
直方圖均衡化方法是一種常用的圖像增強算法。在灰度圖像增強算法中,通常采用基于概率累積函數的均衡法。但是彩色圖像有R、G、B三個顏色分量,這使得原來的一維問題變成了更加復雜的三維問題。
本文主要介紹了四種彩色圖像直方圖均衡化算法:基于RGB彩色空間的顏色通道獨立增強算法、基于HSI彩色空間I分量增強算法、彩色空間非線性重組的增強算法和快速顏色保持彩色圖像增強算法。最后將這些增強算法進行了實驗對比,分析了各類算法在增強效果、算法復雜度和顏色保持等方面的優缺點。
畢業論文關鍵詞: 彩色圖像;圖像增強;直方圖均衡;顏色保持
The research of color image enhancement
Abstract: Recent years,the color image information has been widely used in various
fields.and got a great deal of attention in digital image processing with the constantly
improving multimedia technology.Color image enhancement is a very important pre-processing,and played a crucial role in improving the color image quality and
subsequent image analysis.Unlike the gray-scale image enhancement,the process of color image enhancement,not only need to strengthen the determination and identification effect of image,but also to avoid color distortion caused by image enhancement.
The histogram equalization is the most commonly used image enhancement algorithms . For gray-scale images, we usually use the 1-D histogram equalization method based on the cumulative distribution function. However, a typical color image has three color components: red(R), green(G) and blue(B). The histogram equalization of a color image is more complex than 1-D equalization due to the multidimensional nature of color signal.

源¥自%六:維;論-文'網=www.aftnzs.live


This paper mainly introduces the four kinds of color image histogram equalization algorithm: the equalization method based on each RGB color channel, the equalization method based on I component in HSI color space, Non-linear color space enhancement algorithm restructuring and a fast hue preserved color image enhancement algorithm.Finally I compare these enhancement algorithms through experiments, and analyze the advantages and disadvantages of the various algorithms enhance the effect, algorithm complexity, color retention on and so on.
Key Words: Color image;Image enhancement;Histogram equalization;Color preserving
目  錄
1緒論    1
1.1 課題研究背景和意義    1
1.2 國內外研究現狀與水平    1
1.3 本文的研究內容與創新點    2
1.4 論文結構安排    2
2 圖像增強基本理論和彩色空間    4
2.1 空域圖像增強    4
2.1.1 灰度圖像變換    4
2.1.2 直方圖增強    7
2.1.3 圖像平滑    9
2.1.4 圖像銳化    9
2.2 頻域圖像增強    9
2.2.1 低通濾波器    10
2.2.2 高通濾波器    10
2.2.3 帶阻帶通濾波器    10
2.2.4 同態濾波器    10
2.3 常見彩色空間類型及類型變換    11
2.3.1 RGB彩色空間    11
2.3.2 HSI彩色空間    12
2.3.3 YUV彩色空間    13
2.4 本章小結    14
3 彩色圖像增強算法    15 直方圖均衡化彩色圖像增強算法研究:http://www.aftnzs.live/tongxin/20190517/33375.html
------分隔線----------------------------
推薦內容
双色球走势图带连线