Title:
信号処理システムにおけるノイズを解析する方法及び装置
Document Type and Number:
Japanese Patent JP2010523047
Kind Code:
A
Abstract:
A fast accurate multi-channel frequency dependent scheme for analyzing noise in a signal processing system is described herein. Noise is decomposed within each channel into frequency bands and sub-band noise is propagated. To avoid the computational complexity of a convolution, traditional methods either assume the noise to be white, at any point in the signal processing pipeline, or they just ignore spatial operations. By assuming the noise to be white within each frequency band, it is possible to propagate any type of noise (white, colored, Gaussian, non-Gaussian and others) across a spatial transformation in a very fast and accurate manner. To demonstrate the efficacy of this technique, noise propagation is considered across various spatial operations in an image processing pipeline. Furthermore, the computational complexity is a very small fraction of the computational cost of propagating an image through a signal processing system.
Inventors:
Bakai Farran A
Matsui Akira
Kenichi Nishio
Matsui Akira
Kenichi Nishio
Application Number:
JP2010500918A
Publication Date:
July 08, 2010
Filing Date:
March 13, 2008
Export Citation:
Assignee:
ソニー株式会社
ソニー エレクトロニクス インク
ソニー エレクトロニクス インク
International Classes:
H04B15/00; G06T5/20; G06V10/30; G10L21/02; H04N5/21; H04N9/64
Domestic Patent References:
| JPH10254499A | 1998-09-25 | |||
| JP2004502977A | 2004-01-29 |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Hiroyuki Suda
Hiroshi Uesugi
Nobuhiko Suzuki
Fumiaki Otsuka
Hiroyuki Suda
Hiroshi Uesugi
Nobuhiko Suzuki