Using truncated multipliers in DCT and IDCT hardware accelerators

E. George Walters III; Mark G. Arnold; Michael J. Schulte

doi:10.1117/12.506793

24 December 2003 Using truncated multipliers in DCT and IDCT hardware accelerators

E. George Walters III, Mark G. Arnold, Michael J. Schulte

Proceedings Volume 5205, Advanced Signal Processing Algorithms, Architectures, and Implementations XIII; (2003) https://doi.org/10.1117/12.506793
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Truncated multipliers offer significant improvements in area, delay, and power. However, little research has been done on their use in actual applications, probably due to concerns about the computational errors they introduce. This paper describes a software tool used for simulating the use of truncated multipliers in DCT and IDCT hardware accelerators. Images that have been compressed and decompressed by DCT and IDCT accelerators using truncated multipliers are presented. In accelerators based on Chen's algorithm (256 multiplies per 8 x 8 block for DCT, 224 multiplies per block for IDCT), there is no visible difference between images reconstructed using truncated multipliers with 55% of the multiplication matrix eliminated and images reconstructed using standard multipliers with the same operand lengths and intermediate precision.

Citation Download Citation

E. George Walters III, Mark G. Arnold, and Michael J. Schulte "Using truncated multipliers in DCT and IDCT hardware accelerators", Proc. SPIE 5205, Advanced Signal Processing Algorithms, Architectures, and Implementations XIII, (24 December 2003); https://doi.org/10.1117/12.506793

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available