Accelerating Redundant DCT Filtering for Deblurring and Denoising

In this paper, we propose an acceleration method of redundant DCT filtering for deblurring and denoising. Current CCD cameras have high-resolution images, and the resolution has been increasing. Even if pixels are in focus, the pixels have slight blurring due to diffraction and Bayer interpolation. Therefore, we focus deblurring for slight blurring on real-time performance. Traditional approaches have a fast computational performance for this purpose, but these methods do not contain denoising architecture. In this paper, we simultaneously perform deblurring and denoising on the redundant DCT domain for accelerating the process. Also, we show that a post-scaling DCT can accelerate the proposed filtering. Experimental results show that the proposed method is the fastest method and the accuracy is also high among the fast approaches.