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Adaptive reconstruction technique for the lost information of the rectangular image area
Authors:Shi Rong  Li Xiaofeng  Li Zaiming
Affiliation:The Communication and Information Institute, UESTC, Chengdu 610054
Abstract:The adaptive reconstruction for the lost information of the rectangular image area is very important for the robust transmission and restoration of the image. In this paper, a new reconstruction method based on the Discrete Cosine Transform (DCT) domain has been put forward. According to the low pass character of the human visual system and the energy distribution of the DCT coefficients on the rectangular boundary, the DCT coefficients of the rectangular image area are adaptively selected and recovered. After the Inverse Discrete Cosine Transform (IDCT), the lost information of the rectangular image area can be reconstructed. The experiments have demonstrated that the subjective and objective qualities of the reconstructed images are enhanced greatly than before.
Keywords:Recovery of the Discrete Cosine Transform(DCT) coefficients  Inverse DCT (IDCT)  Human visual character  The image information loss  Adaptive reconstruction
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