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Protection filter for image and video processing
US9105081B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9105081-B2 |
| Application number | US-20640408-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2008 |
| Priority date | Sep 8, 2008 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A filter includes a conventional filtering block and a protection block. The conventional filtering block receives input values and provides filtered values. The protection block receives filtered values and a group of input values proximate the current input, to ensure that the output is lies within a range computed for the current input. The range is determined by the protection block based on the group of input values proximate the current input. Any algorithm or statistical function may be applied to the group of input values to determine the range. If a filtered value provided by the conventional filtering block is outside the range, then the protection block computes and outputs a value that is within the range. The filter may be used in temporal or spatial filtering of images and video to mitigate artifacts such as motion artifacts and static artifacts.
First claim
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What is claimed is: 1. A noise reduction filter comprising: a temporal noise reduction filtering block receiving an input value for a pixel location in a current image frame from an input signal and computing a filtered value based on said input value and values for said pixel location in previous image frames; and a protection block comprising: an input for receiving said filtered value, and a group of values for pixels proximate said pixel location in said current image frame…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9105081B2 cover?
- A filter includes a conventional filtering block and a protection block. The conventional filtering block receives input values and provides filtered values. The protection block receives filtered values and a group of input values proximate the current input, to ensure that the output is lies within a range computed for the current input. The range is determined by the protection block based o…
- Who is the assignee on this patent?
- Wong Daniel, Cao Peter, Ati Technologies Ulc
- What technology area does this patent fall under?
- Primary CPC classification G06T5/002. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).