Arithmetic precision for perspective transform in sprite decoding of MPEG-4

Aravind R. Dasu; Subramanian Raghavan; Nagaraj C. Raghavendra; Sethuraman Panchanathan

doi:10.1117/12.375237

29 December 1999 Arithmetic precision for perspective transform in sprite decoding of MPEG-4

Aravind R. Dasu, Subramanian Raghavan, Nagaraj C. Raghavendra, Sethuraman Panchanathan

Proceedings Volume 3970, Media Processors 2000; (1999) https://doi.org/10.1117/12.375237
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

This paper presents a method of implementing the perspective transform as specified in the MPEG-4 standard using 32-bit fixed-point reduced precision calculations instead of using 64-bit floating-point full precision operators. We achieve this by removing some redundant calculations and truncating the numerator and denominator terms of the transform without loss of accuracy.

Citation Download Citation

Aravind R. Dasu, Subramanian Raghavan, Nagaraj C. Raghavendra, and Sethuraman Panchanathan "Arithmetic precision for perspective transform in sprite decoding of MPEG-4", Proc. SPIE 3970, Media Processors 2000, (29 December 1999); https://doi.org/10.1117/12.375237

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