Real-time auto white balancing using DWT-based multi-scale clustering

N. Kehtarnavaz; N. Kim; M. Gamadia

doi:10.1117/12.641946

15 February 2006 Real-time auto white balancing using DWT-based multi-scale clustering

N. Kehtarnavaz, N. Kim, M. Gamadia

Proceedings Volume 6063, Real-Time Image Processing 2006; 606308 (2006) https://doi.org/10.1117/12.641946
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Auto white balancing (AWB) involves the process of making white colors to appear as white under different illuminants in digital imaging products such as digital still cameras. This paper presents a computationally efficient auto white balancing algorithm for real-time deployment in imaging products. The algorithm utilizes DWT (discrete wavelet transform) to perform multi-scale clustering (MSC), thus generating a computationally efficient implementation of the original MSC algorithm. The paper also discusses the steps taken to allow running this algorithm in real-time on a digital camera processor. The results of an actual implementation on the Texas Instruments TMS320DM320 processor are provided to illustrate the effectiveness of this algorithm in identifying an illuminant as compared to the widely used gray-world auto white balancing algorithm.

Citation Download Citation

N. Kehtarnavaz, N. Kim, and M. Gamadia "Real-time auto white balancing using DWT-based multi-scale clustering", Proc. SPIE 6063, Real-Time Image Processing 2006, 606308 (15 February 2006); https://doi.org/10.1117/12.641946

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