An efficient method for DCT-domain image resizing with mixed field/frame-mode macroblocks
نویسندگان
چکیده
This paper deals with 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. In this paper, 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 frameand field-mode macroblocks. This leads to new frameand 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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ورودعنوان ژورنال:
- IEEE Trans. Circuits Syst. Video Techn.
دوره 9 شماره
صفحات -
تاریخ انتشار 1999