基于色度-亮度全变分模型的彩色图像放大

Color Image Magnification Based on Chromaticity-Brightness Total Variation Model

采用传统插值法放大的图像存在边缘锯齿化和边缘模糊化缺点。针对该问题,在分析图像复原全变分模型的基础上,将色度-亮度全变分复原模型用于彩色图像放大,使图像放大问题转化为图像修补问题。实验结果证明,该方法能保持放大后图像边缘的光滑与清晰。

The images magnified by traditional interpolation method have shortages such as blurred edges and jagged edges. Aiming at this problem and based on the analysis of the Total Variation（TV） model used in image restoration, this paper adopts Chromaticity-Brightness TV restoration model to color image magnification and transforms image magnification problem into image mending. Experimental results show that the method can keep the lubricity and definition of magnified image edges.