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US-11867898-B2 · Jan 9, 2024 · US
Correction of non-uniform sensitivity in an image array
US8934035B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8934035-B2 |
| Application number | US-201113237105-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2011 |
| Priority date | Aug 11, 2004 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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An improved non-uniform sensitivity correction algorithm for use in an imager device (e.g., a CMOS APS). The algorithm provides zones having flexible boundaries which can be reconfigured depending upon the type of lens being used in a given application. Each pixel within each zone is multiplied by a correction factor dependent upon the particular zone while the pixel is being read out from the array. The amount of sensitivity adjustment required for a given pixel depends on the type of lens being used, and the same correction unit can be used with multiple lenses where the zone boundaries and the correction factors are adjusted for each lens. In addition, the algorithm makes adjustments to the zone boundaries based upon a misalignment between the centers of the lens being used and the APS array.
First claim
Opening claim text (preview).
What is claimed as new and desire to be protected by Letters Patent of the United States is: 1. An imager device, comprising: a pixel array comprising a plurality of pixels, wherein the pixel array captures images focused onto the pixel array by a main lens; and a sensitivity correction unit coupled to the pixel array, wherein the sensitivity correction unit selectively corrects the sensitivity of pixel signals from the plurality of pixels according to a correction function assi…
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- H04N25/61Primary
Electricity · mapped topic
- H04N5/3572Primary
Electricity · mapped topic
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- What does patent US8934035B2 cover?
- An improved non-uniform sensitivity correction algorithm for use in an imager device (e.g., a CMOS APS). The algorithm provides zones having flexible boundaries which can be reconfigured depending upon the type of lens being used in a given application. Each pixel within each zone is multiplied by a correction factor dependent upon the particular zone while the pixel is being read out from the …
- Who is the assignee on this patent?
- Jerdev Dmitri, Subbotin Igor, Ovsiannikov Ilia, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04N25/61. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 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).