机构地区: 华南理工大学电子与信息学院
出 处: 《现代电子技术》 2010年第4期58-60,共3页
摘 要: 振铃效应严重地影响了复原图像质量,在此针对MEPG-4中的去振铃滤波方法,提出一种新的去振铃滤波算法,既能有效消除振铃效应又能充分保护图像的边缘。算法首先找出边缘区域和非边缘区域,然后根据振铃效应产生的原因和现象,采用中值滤波器对图像进行自适应滤波,以去除振铃效应。实验结果表明,这里的滤波算法相对于MEPG-4中的去振铃滤波方法,能更加有效地去除振铃效应,并且大大提高了图像的主客观质量。 Ringing effects seriously influenced the quality of restored image. A new adaptive deringing algorithm is proposed based on the deringing algorithm of MEPG -4. In the algorithm, edge parts are found firstly, then the median filter is applied to the image adaptively according to the cause of ringing effect. The results show that the proposed algorithm can reduce the ringing more effectively and can improve the subjective and objective quality of image compared to the existed algorithm.
领 域: [自动化与计算机技术] [自动化与计算机技术]