IMAGE SHARPENING WITH BLUR MAP ESTIMATION USING CONVOLUTIONAL NEURAL NETWORK
- Laboratory of Mathematical Methods of Image Processing, Faculty of Computational Mathematics and Cybernatics, Lomonosov Moscow State University, Moscow, Russia
Keywords: Blur estimation, Image sharpening, Grid warping
Abstract. We propose a method for choosing optimal values of the parameters of image sharpening algorithm for out-of-focus blur based on grid warping approach. The idea of the considered sharpening algorithm is to move pixels from the edge neighborhood towards the edge centerlines. Compared to traditional deblurring algorithms, this approach requires only scalar blur level value rather than a blur kernel. We propose a convolutional neural network based algorithm for estimating the blur level value.