Akshay S Soni

US Patent:

20140219552, Aug 7, 2014

Filed:

Feb 7, 2013

Appl. No.:

13/762022

Inventors:

- Cambridge MA, US
Akshay Soni - Cambridge MA, US

Assignee:

MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. - Cambridge MA

International Classification:

G06T 5/00

US Classification:

382155, 382261, 382163

Abstract:

An input image is denoised by first constructing a pixel-wise noise variance map from the input image. The noise has spatially varying variances. The input image is partitioned into patches using the noise variance map. An intermediate image is determined from the patches. Collaborative filtering is applied to each patch in the intermediate image using the noise variance map to produce filtered patches. Then, the filtered patches are projected to an output image.