Interpolation of Non-Linear Retinex Type Algorithms

Shaked, Doron

HP Development Company

关键词: image processing;    retinex-type algorithms;    image interpolation;   

RP-ID  :  HPL-2006-179

学科分类：计算机科学（综合）

美国|英语

来源: HP Labs

【 摘 要 】

In this paper we propose a method to speed up Retinex- type algorithms, consisting of a computationally intensive non-linear illumination estimation module followed by a relatively simple manipulation module. Speed up is obtained by way of computing the illumination on a sub-sampled image. The challenge is to interpolate a piece-wise smooth low resolution image. We present and analyze the trade off between two types of interpolation methods. On one hand, regular illumination interpolation, which preserves the Retinex-type output quality, however may result in artifacts. On the other hand a detail preserving interpolation which removes artifacts, however may compromise the output quality. Publication Info: Published in the proceedings of Electronic Imaging 2007, 28 January - 1 February 2007, San Jose, CA, USA 11 Pages