ADAPTIVE RECONSTRUCTION TECHNIQUE FOR THE LOST INFORMATION OF THE RECTANGULAR IMAGE AREA

查看全文 作　　者：ShiRong LiXiaofeng [1]LiZaiming 机构地区：[1]TheCommunicationandInformationInstitute,UESTC,Chengdu610054 出　　处：《Journal of Electronics(China)》索引2004年第21卷第2期,共8页 摘　　要：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. 关 键 词：DCT 离散余弦变换 IDCT 视觉特征 图像信息丢失 自适应重建