以擴散方程式強化影像之研究

The Study of Image Enhancement Using Diffusion Equation

吳庭瑞(Ting-Rui Wu)

指導教授 ： 楊乃中

共同指導教授 ： 郭忠民(Chung-Ming Kuo)

義守大學/電機資訊學院/資訊工程學系/碩士(2016年)

摘要

隨著科技的進步，人們對影像品質要求越來越高，在很多應用方面也是極度被需求的，雖然高品質影像已經日漸普及，但到目前為止提升彩色影像對比的技術還沒有令人滿意。為了更有效的顯示細微影像資訊，使用影像強化來提升影像品質早已開始研究。傳統的影像處理面臨最大問題就是影像在強化後，會使得影像裡物體的色彩失真。基於上列因素，提出利用擴散方程式自動捕捉理想影像品質的方法。本方法逐步強化影像的亮度與對比，當滿足限制條件後將自動停止運算，並且在強化後輸出的影像可以看到令人滿意的結果。

關鍵字

影像強化 ； 直方圖等化 ； 擴散 ； 亮度

並列摘要

As technology progresses, the high-quality images, which have been used in many applications, are becoming urgent. Although the applications of the high-quality images become popular, the technologies for enhancing the contrast of color images are not satisfactory till this stage. To more effectively display the detailed image information, the image processing techniques focused on increasing image quality have been extensively studied. The major problem of the traditional enhancements for color images is that it could cause color distortion in the output images. In this thesis, we propose a method, which utilizes diffusion equation to enhance the images to achieve minimum color distortion. This method gradually enhances the brightness and contrast of the image. Computations are stopped when the constraints are satisfied. Experimental results indicate that the proposed method achieves satisfactory enhancement for color images.

並列關鍵字

Diffusion Equation ； Image enhancement

參考文獻

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