US6933970B2
Expired / Lapsed
US
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Digital still camera system and method
Assignee: Tahoe Research Ltd
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Filing: 2000-12-20
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Granted: 2005-08-23
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Expires: 2020-12-20
Abstract
Abstract An interpolation for a Bayer pattern color-filtered array with edge enhancement by clamping green interpolation values.
Inventors
- 👤 Osamu Koshiba
- 👤 Satoru Yamauchi
- 👤 Hideo Tomama
- 👤 Akira Osomato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/80; H04N23/84; H04N23/843; G; G06; G06T; G06T1/00; G06T1/60; G06T3/00; G06T3/40; G06T3/4015; G06T3/403; H04N1/00; H04N1/21; H04N1/2104; H04N1/2112; H04N1/212; H04N19/00; H04N19/42; H04N19/60; H04N19/61; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/134; H04N25/135; H04N25/136; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772; H04N2101/00; H04N5/907; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A method of interpolation for a Bayer color-filtered array, comprising the steps of: (a) interpolate the green subarray of a Bayer pattern color-filtered array to form a first green array; (b) clamp the interpolated pixel values of the first green array to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; and (c) interpolate the red and blue subarrays.
Claim 2
Independent Claim
80 words
A method of interpolation for a Bayer color-filtered array, comprising the steps of: (a) interpolate the green subarray of a Bayer pattern color-filtered array to form a first green array; (b) clamp the interpolated pixel values of the first green array to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; and (c) interpolate the red and blue subarrays.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein: (a) the interpolation step (a) of claim 1 is by a symmetric 5×5 FIR filter.
Claim 4
Dependent Claim
26 words
The method of claim 1 wherein: (a) the interpolation step (a) of claim 1 leaves the pixels values of the pixels in the green subarray unchanged.
Claim 5
Dependent Claim
92 words
An interpolator for a Bayer pattern color-filtered array, comprising: (a) an interpolator for the green subarray of a Bayer pattern color-filtered array to form a first green array; (b) a clamp for the interpolated pixel values of the first green array to adjust the pixel values to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; (c) an interpolator for the red subarray; and (d) an interpolator for the blue subarray.
Claim 6
Dependent Claim
92 words
An interpolator for a Bayer pattern color-filtered array, comprising: (a) an interpolator for the green subarray of a Bayer pattern color-filtered array to form a first green array; (b) a clamp for the interpolated pixel values of the first green array to adjust the pixel values to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; (c) an interpolator for the red subarray; and (d) an interpolator for the blue subarray.
Claim 7
Dependent Claim
26 words
The interpolator of claim 4 , wherein: (a) the interpolator for the green subarray leaves the pixels values of the pixels in the green subarray unchanged.
Claim 8
Dependent Claim
81 words
An interpolator for a Bayer pattern color-filtered array, comprising: (a) a processor programmed to (i) interpolate the green subarray of a Bayer pattern color-filtered array to form a first green array; (ii) clamp the interpolated pixel values of the first green array to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; and (iii) interpolate the red and blue subarrays.
Claim 9
Dependent Claim
81 words
An interpolator for a Bayer pattern color-filtered array, comprising: (a) a processor programmed to (i) interpolate the green subarray of a Bayer pattern color-filtered array to form a first green array; (ii) clamp the interpolated pixel values of the first green array to lie in the range of the middle two values of the four neighboring values of the green subarray, the clamp of the first green array yields a final green array; and (iii) interpolate the red and blue subarrays.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-08-22 | 2009-02-21 | 2009-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-08-22 | 2013-02-21 | 2013-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-08-22 | 2017-02-21 | 2017-08-23 | $7700.00 | Window Closed / Lapsed |