多視角影像亮度與色彩修正應用於三維立體電視之系統

Luminance and Color Correction of Multi-view Image for 3DTV System

沈展弘(Jan-Hung Shen)

指導教授 ： 范育成

國立臺北科技大學/電資學院/電腦與通訊研究所/博士(2013年)

摘要

應用於立體電視之多視角影像，常遇見主要的兩個問題，第一種為遮蔽問題，主要原因為不同的視角所拍攝的角度所造成的結果。第二種要探討的為亮度差異的問題，主要原因在於使用多台相機進行拍攝時，會因為場景和光線亮度的影響，使得每一個影像亮度不一致，導致使用者觀看會有明顯的亮度差異。為了改善此問題，論文中提出亮度修正演算法，亮度修正後會對色彩資訊造成影響，讓色彩資訊隨著亮度變化作調整，提出色彩修正的演算法，讓多視角影像達到更完美的效果，在實驗結果可看出在經過亮度補償與色彩修正後可達到很好的效果。

關鍵字

亮度修正 ； 色彩修正 ； 直方圖演算法 ； 立體電視

並列摘要

There are two general issues for the multi view image. The first kind of issue is about mask effect. The main reason is due to the shooting angle from the different visual angles. The second kind of issue is about the different luminance. The main reason is that using a plurality of cameras for shooting causes the scene and luminance of light influenced so that each of view has different degree of light and causes obviously different degree of luminance for the users. In order to improve the above issues, this paper proposes a luminance correction algorithm. However, after the luminance correction algorithm processes, the color information is influenced. In order to adjust the color information corresponding with the luminance change, this paper provides a color correction method. The method can improve the multi view image to have the better performance. In the experiment, the result shows that the multi view image has a better performance after using the luminance correction algorithm and the color correction method.

並列關鍵字

Luminance Correction ； Color Correction ； Histogram Equalization ； 3DTV System

參考文獻

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