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An efficient method for DCT-domain image resizing with mixed field/frame-mode macroblocks

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2 Author(s)
Changhoon Yim ; Compression Syst. Group, Sarnoff Corp., Princeton, NJ, USA ; Isnardi, M.A.

This paper deals with the discrete cosine transform (DCT)-domain image resizing as compressed domain processing. Previous DCT-domain image resizing methods assume that all macroblocks are in the frame-mode. We propose an efficient method for DCT-domain image resizing with mixed field/frame-mode macroblocks. This method is developed from the investigation of the DCT-domain image resizing operation through a decomposition of matrix operations, from which we define new downsampling matrices for frame- and field-mode macroblocks. This leads to new frame- and field-mode resizing transformation matrices for DCT-domain image resizing. The proposed DCT-domain image resizing method can be used when there are mixed field/frame-mode macroblocks

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Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:9 ,  Issue: 5 )