Signal adaptive filtering method, signal adaptive filter and computer readable medium for storing program therefor
US-9060181-B1 · Jun 16, 2015 · US
Signal adaptive filtering method, signal adaptive filter and computer readable medium for storing program therefor
US9264705B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9264705-B2 |
| Application number | US-201514736916-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2015 |
| Priority date | Jul 16, 1997 |
| Publication date | Feb 16, 2016 |
| Grant date | Feb 16, 2016 |
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Abstract
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A signal adaptive filtering method for reducing blocking effect and ringing noise, a signal adaptive filter, and a computer readable medium. The signal adaptive filtering method capable of reducing blocking effect and ringing noise of image data when a frame is composed of blocks of a predetermined size includes the steps of: (a) generating blocking information for reducing the blocking effect and ringing information for reducing the ringing noise, from coefficients of predetermined pixels of the upper and left boundary regions of the data block when a frame obtained by deconstructing a bitstream image data for inverse quantization is an intraframe; and (b) adaptively filtering the image data passed through inverse quantization and inverse discrete cosine transform according to the generated blocking information and ringing information. Therefore, the blocking effect and ringing noise can be eliminated from the image restored from the block-based image, thereby enhancing the image restored from compression.
First claim
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What is claimed is: 1. An image data filtering apparatus for reducing a blocking effect and noise, the apparatus comprising: an obtainer which obtains a data block including transformed coefficients; a filtering information generator which checks whether all coefficients of all pixels in the data block are equal to zero or not, and generates filtering information indicating whether to perform deblocking filtering for the data block according to whether all of the coefficients of…
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- What does patent US9264705B2 cover?
- A signal adaptive filtering method for reducing blocking effect and ringing noise, a signal adaptive filter, and a computer readable medium. The signal adaptive filtering method capable of reducing blocking effect and ringing noise of image data when a frame is composed of blocks of a predetermined size includes the steps of: (a) generating blocking information for reducing the blocking effect …
- Who is the assignee on this patent?
- Samsung Electronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04N19/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).