Color Reconstruction of Greyscale Images Based on Sparse Representation

Di Zhang, Baosheng Kang, Lei Zhang, Jing Zhang
2017 Innovative Computing Information and Control Express Letters, Part B: Applications  
Sparse representation has drawn greater attention in color reconstruction. This paper proposes a color reconstruction approach based on sparse representation of classified image patches and non-local sparse coding. Firstly, image patches are classified into smooth, texture and edge classes, and different dictionaries are trained by the relevant information. Then, non-local coefficient is obtained by the calculated local coefficients. Finally, the color of the greyscale image is reconstructed by
more » ... the dictionary and the non-local coefficient. The experimental results show that the proposed method can achieve competitive performance compared with other state-of-the-art methods.
doi:10.24507/icicelb.08.03.553 fatcat:a72neowprvhnpfr2hw2lonv7uu