Image Retargeting in Compressed Domain

Efficient DCT-based image retargeting in compressed domain

“…Fig. 10 compare the image quality of the proposed algorithm with uniform scaling, cropping, the popular seam carving [1] and Murthy's method [13]. As we can observe from these figures, uniform scaling may distort the shape of the objects.…”

“…2(b)), the columns with lowest importance values will be removed in order to meet the target width ( Fig. 2(c)) [13].…”

“…However, to the best of our knowledge, most of the existing algorithms are performed in spatial domain of raw images, as shown in Fig.1(a). Murthy et al proposed to use the image information in compressed domain for image retargeting [13]. In this method, F (u, v) denote the discrete cosine transform (DCT) coefficients for the 8 × 8 image block of pixel f (i, j).…”

“…The column removal in [13]. (a) complexity array c(x); (b) sorted c(x); (c) the removal of one column.…”

“…A number of algorithms have been proposed to adapt images content to various display settings [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. However, most of these existing algorithms work in spatial domain of raw images.…”