Denoising of Noisy Pixels in Video by Neighborhood Correlation Filtering Algorithm
P. Karunakaran, Suresh Venkatraman, I.Hameem Shanavas, T. Kapilachander · International Journal of Image Graphics and Signal Processing · 2012
A fast filtering algorithm for color video based on Neighborhood Correlation Filtering is presented.By utilizing a 3 × 3 pixel template, the algorithm can discriminate and filter various patterns of noise spots or blocks.In contrast with many kinds of median filtering algorithm, which may cause image blurring, it has much higher edge preserving ability.Furthermore, this algorithm is able to synchronously reflect image quality via amount, location and density statistics.Filtering of detected pixels is done by NCF algorithm based on a noise adaptive mean absolute difference.The experiments show that the proposed method outperforms other state-of-the-art filters both visually and in terms of objective quality measures such as the mean absolute error (MAE), the peaksignal-to-noise ratio (PSNR) and the normalized color difference (NCD).