A new error criterion for block based motion estimation

Author

Fuldseth, Arild ; Ramstad, Tor A.

Author_Institution

Dept. of Telecommun., Norwegian Inst. of Technol., Trondheim, Norway

Volume

3

fYear

1995

fDate

23-26 Oct 1995

Firstpage

188

Abstract

A new error criterion for block based motion estimation in a hybrid video coder is proposed. Traditionally, the mean squared error between the current and the previous frames has been considered as an appropriate criterion for selecting the displacement vectors in hybrid video coders. It is shown that when the spatial domain coder is based on a DCT and dynamic bit allocation, improved performance can be achieved by using the geometric mean of the DCT coefficient variances as the error criterion. The proposed coder offers a significant gain in terms of PSNR, typically in the range of 0.2-1.0 dB, without much increase in the computational complexity

Keywords

coding errors; discrete cosine transforms; error statistics; image sequences; motion compensation; motion estimation; transform coding; video coding; DCT coefficient variances; PSNR; block based motion estimation; computational complexity; displacement vectors; dynamic bit allocation; error criterion; geometric mean; hybrid video coder; image frames; mean squared error; motion compensation; performance; spatial domain code; video sequence coding; Bit rate; Computational complexity; Design for disassembly; Discrete cosine transforms; Filter bank; Motion compensation; Motion estimation; PSNR; Redundancy; Video sequences;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1995. Proceedings., International Conference on

Conference_Location

Washington, DC

Print_ISBN

0-8186-7310-9

Type

conf

DOI

10.1109/ICIP.1995.537612

Filename

537612