Digital TV video format conversion by extendible inverse DCT and its recursive algorithm for VLSI implementation

Author

Hsu, Yuh-Feng ; Chen, Yung-Chang

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

Volume

44

Issue

2

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

240

Lastpage

245

Abstract

Video format conversion among digital TV systems using a new extendible inverse DCT is developed. Based on the conventional inverse DCT, an extendible inverse DCT equation is given to provide the rational ratio of interpolation. The proposed extendible inverse DCT is backward compatible to the conventional IDCT which is widely used in digital video compression standards such as MPEG. Experimental results demonstrate the preservation of the edge sharpness and continuity at image interpolation. A recursive algorithm with an arbitrary length for the extendible inverse DCT is also proposed. The algorithm is particularly suitable for VLSI implementation using array processing

Keywords

VLSI; digital signal processing chips; digital television; discrete cosine transforms; interpolation; inverse problems; parallel processing; transform coding; video coding; IDCT; MPEG; VLSI implementation; array processing; continuity; digital TV systems; digital video compression standards; edge sharpness; experimental results; extendible inverse DCT; image interpolation; interpolation; recursive algorithm; video format conversion; Digital TV; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Equations; HDTV; Interpolation; Low pass filters; Very large scale integration; Video compression;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.681932

Filename

681932