Fine grain creation for UHDTV

A novel fine grain creation method for Ultra-HighDefinition TeleVision (UHDTV) has been proposed. To make fine grain components, multi-layer super resolution reconstruction and the frequency modulation method are developed. Base and Texture layer of images are fused separately to prevent the loss of texture components in interpolation. After, fine grains are created on up-scaled images. Fine grain creation is composed of two parts, one is diffusion of low frequency components, and the other is generation of aliased high frequency components. Those are added on the up-scaled video with matching weights to enhance the feeling of textures. The proposed method shows a better performance compared to the conventional restoration methods in terms of texture by the experimental results.