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

Author

Yim, Changhoon ; Isnardi, Michael A.

Author_Institution

Compression Syst. Group, Sarnoff Corp., Princeton, NJ, USA

Volume

9

Issue

5

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

696

Lastpage

700

Abstract

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

Keywords

data compression; discrete cosine transforms; image coding; image sampling; matrix decomposition; transform coding; DCT-domain image resizing; compressed domain processing; discrete cosine transform; downsampling matrices; field-mode resizing transformation matrices; frame-mode resizing transformation matrices; matrix operations decomposition; mixed field/frame-mode macroblocks; video compression standards; Digital TV; Discrete cosine transforms; Filtering; HDTV; Image coding; Image converters; Matrix decomposition; NIST; Transform coding; Video compression;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.780359

Filename

780359