The application of changed histogram equalization in image enhancement 變換的直方圖均衡算法在圖像增強中的應用
Experimental results demonstrate this method is better than histogram equalization under this circumstance 實驗結果表明,與直方圖均衡方法相比,此方法效果較佳。
In the facet of pre - transact of ir image , the traditional smooth spatial filter and histogram equalization are analyzed and intruded first 論文在紅外圖像預處理方面,首先分析了傳統的空間濾波技術,并著重介紹了平滑空間濾波器。
The traditional image enhancement approaches include gray - scale transformation , histogram modification , histogram equalization , image smoothing and wiener filtration 傳統的圖像增強方法有灰度變換、直方圖修正、直方圖均衡、圖像平滑和維納濾波。
There are several effective methods which are used to improve image contrast , such as piecewise linear stretch , histogram equalization and histogram normalization and so on 采用圖像對比度增強的方法改善影像灰度反差。主要的對比度增強方法有分段線性增強、直方圖均衡化和直方圖正態化等。
In addition , we proposed an adaptive histogram equalization method with variant window size over each pixel . this method produces more appropriate window size for each pixel than others 與已有的方法相比,由該方法生成的窗口大小能較靈活地適應了圖像中不同區域的灰度分布,取得了較好的結果。
In this thesis , the preprocessing work includes histogram equalization and gray normalization . this preprocessing improves image quality , and eliminates the effects of illumination difference on the images 本論文在預處理階段通過對灰度直方圖修正、灰度歸一等工作改善了原圖像的質量,使光照不均勻對圖像識別的影響降低。
In this paper , firstly the micro - areas image acquisition is introduced . secondly , in order to enhance the useful characteristic , the image pre - processing is taken by histogram equalization and modified median filter 論文首先實現了微區圖像的采集,為了增強圖像的有用特征,采用灰度級修正和噪聲抑制的方法對圖像進行了預處理。
Besides , several contrast enhancing approaches were compared in the thesis , including histogram equalization , homo - filters , and wavelet transform . an algorithm based on the polygon approximation is developed 本論文對比了現有的一些圖像對比度提高的方法,包括直方圖均衡化、同態濾波器和小波同態濾波法在水下圖像對比度增強中應用的效果。
This paper puts emphasis on image processing which makes use of histogram equalization method for image enhancement , which making engineer effectively analyze and making certain flaw , abrasion , bend of wall of a well 文中著重介紹了圖像處理部分,使用直方圖均衡化等方法對井下圖像進行圖像增強處理,使工程人員能夠更有效的分析和確定井壁裂紋、磨損、彎曲等狀況。