WO2022185345A4 - Optimal color filter array and a demosaicing method thereof - Google Patents
Optimal color filter array and a demosaicing method thereof Download PDFInfo
- Publication number
- WO2022185345A4 WO2022185345A4 PCT/IN2022/050667 IN2022050667W WO2022185345A4 WO 2022185345 A4 WO2022185345 A4 WO 2022185345A4 IN 2022050667 W IN2022050667 W IN 2022050667W WO 2022185345 A4 WO2022185345 A4 WO 2022185345A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- color
- color filter
- image sensor
- filter array
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 5
- 239000003086 colorant Substances 0.000 claims abstract 2
- 230000003595 spectral effect Effects 0.000 claims 1
- 238000001228 spectrum Methods 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 208000036971 interstitial lung disease 2 Diseases 0.000 abstract 3
- 241001428800 Cell fusing agent virus Species 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4015—Image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
- H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
- H04N25/134—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on three different wavelength filter elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
A method for capturing raw image data for a full-color image by a digital image sensor is provided having a color filter array ( CFA), the color filter element s of which may transmit a combination of plural colors, unlike conventional CFAs which allow only one color per color filter element. Further, a CFA image demosaicing method is described to convert raw image sensor data where image element s have grayscale intensity value into a full-color image where image elements have actual intensity values in all color channels.
Claims
1. [Amended] A color filter array, comprising: a plurality of minimum repeating units, each minimum repeating unit include: color filter elements, each permanently overlaid on an image sensor pixel and modeled to transmit portions of plural primary colors of the incident light spectrum in order to achieve an optimal light intensity transmitted by the CFA corresponding to a desired spectral response and be read by the image sensor that is configured to electronically capture raw image data; an image interpolation method, for transforming the received raw image sensor data to a mosaiced image, separated into color planes so that it can be further demosaiced by known techniques to form a full-color image.
2. [Cancelled]
9
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN202211041012 | 2022-07-18 | ||
| IN202211041012 | 2022-07-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2022185345A2 WO2022185345A2 (en) | 2022-09-09 |
| WO2022185345A3 WO2022185345A3 (en) | 2022-11-10 |
| WO2022185345A4 true WO2022185345A4 (en) | 2022-12-01 |
Family
ID=83155629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2022/050667 WO2022185345A2 (en) | 2022-07-18 | 2022-07-25 | Optimal color filter array and a demosaicing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2022185345A2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9071721B1 (en) * | 2012-12-21 | 2015-06-30 | Google Inc. | Camera architecture having a repositionable color filter array |
-
2022
- 2022-07-25 WO PCT/IN2022/050667 patent/WO2022185345A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022185345A3 (en) | 2022-11-10 |
| WO2022185345A2 (en) | 2022-09-09 |
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