GROUP SPARSE REPRESENTATION AND SATURATION-VALUE TOTAL VARIATION BASED COLOR IMAGE DENOISING UNDER MULTIPLICATIVE NOISE

Group sparse representation and saturation-value total variation based color image denoising under multiplicative noise

In this article, we propose a novel group-based sparse representation (GSR) model for restoring color images in the presence of multiplicative noise.This model consists of a convex data-fidelity term, and two regularizations including GSR and saturation-value-based total variation (SVTV).The data-fidelity term is suitable for handling heavy multipl

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Geological characteristics and models of fault-fold-fracture body in deep tight sandstone of the second member of Upper Triassic Xujiahe Formation in Xinchang structural belt of Sichuan Basin, SW China

In the second member of the Upper Triassic Xujiahe Formation (T3x2) in the Xinchang area, western Sichuan Basin, only a low percent of reserves has been recovered, and the CHICK PEAS geological model of gas reservoir sweet spot remains unclear.Based on a large number of core, field outcrop, test and logging-seismic data, the T3x2 gas reservoir in t

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