The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1999
Filed:
Jun. 23, 1997
In-seo Chun, Suwon, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A filtering method and a modified automatic regressive filter therefor are provided. The modified automatic regressive filter includes: a frame memory for storing one frame of the output of the filter; a frame difference generating portion for receiving the signal stored in the frame memory and an observed signal, to output a frame difference, and determining whether the current pixel belongs to a non-moving region or a moving region to output a moving index; a histogram generator for converting the frame difference of the non-moving region into a cumulative distribution function required for calculating the variance of noise in the non-moving region of the observed signal; and a selective filter output portion for selectively outputting the observed signal unaltered in the moving region and the signal passed via an adaptive filter having the gain calculated based on the output data of the histogram generator in the nonmoving region. Thus, a continuous moving signal is processed in real-time with high noise removing capability, and the edge of the moving target is preserved without being blurred.