Interchannel gradient reconstruction of color images corrupted by impulse noise

Investigation of accuracy characteristics of the method of interchannel gradient reconstruction of digital color images

“…Therefore, IGR application requires that at least one of the channel should be free from noise. Presumably, this problem can be solved by combining IGR and MF [4]. The results of the present computational studies can be useful for the development of image processing systems based on using the property of interchannel redundancy.…”

“…Let us introduce a notion of local gradients of color channels R, G, and B, which are described by the expressions [4] g…”

“…This is possible, for instance, owing to malfunctioning of the electronic equipment in one of the channels. It turned out that an effective method of IN filtration in processing of color digital images is interchannel gradient reconstruction (IGR) [4] based on the assumption of equality of local gradients of the corresponding coordinates in each channel and reconstruction of lost signals of the distorted component on the basis of estimates obtained in the neighboring channels.…”