Digital cameras with direct luminance and chrominance detection
First Claim
Patent Images
1. A digital camera comprising:
- a broadband channel including a first optics component and a first image sensor integrated in a substrate and configured to directly detect luminance data;
at least one color channel each of which includes an optics component and an image sensor integrated in a substrate and configured to directly detect chrominance data; and
a processing component coupled to the first and second channels and configured to directly combine outputs of the first and second channels to provide an image in YCrCb color space.
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Abstract
Digital camera systems and methods are described that provide a color digital camera with direct luminance detection. The luminance signals are obtained directly from a broadband image sensor channel without interpolation of RGB data. The chrominance signals are obtained from one or more additional image sensor channels comprising red and/or blue color band detection capability. The red and blue signals are directly combined with the luminance image sensor channel signals. The digital camera generates and outputs an image in YCrCb color space by directly combining outputs of the broadband, red and blue sensors.
281 Citations
52 Claims
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1. A digital camera comprising:
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a broadband channel including a first optics component and a first image sensor integrated in a substrate and configured to directly detect luminance data;
at least one color channel each of which includes an optics component and an image sensor integrated in a substrate and configured to directly detect chrominance data; and
a processing component coupled to the first and second channels and configured to directly combine outputs of the first and second channels to provide an image in YCrCb color space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A digital camera comprising:
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a plurality of channels, wherein each channel includes an optics component and an array of photo-detectors integrated on a semiconductor substrate, the plurality of channels including a first channel configured to directly detect luminance data and at least one other channel configured to directly detect chrominance data; and
a processing component coupled to the plurality of channels, the processing component configured to independently control simultaneous data acquisition with each of the plurality of channels, the processing component configured to directly combine data from the plurality of channels to provide an image in YCrCb color space, wherein the direct combining excludes interpolation of the data from the plurality of channels. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A digital camera comprising:
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a first channel including a first optics component and a first image sensor, the first channel configured to image a white color band and directly output luminance data;
a second channel including a second optics component and a second image sensor, the second channel configured to image at least one of a red and a blue color band and output chrominance data; and
a processing component coupled to the first and second channels and configured to directly combine outputs of the first and second channels to provide an image in YCrCb color space without interpolation in RGB color space. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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43. A method comprising:
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detecting luminance data using a broadband sensor of a digital camera by directly sensing and outputting a broadband wavelength response at the broadband sensor and excluding use of RGB color data;
generating chrominance data using at least one color sensor of the digital camera by sensing and outputting at least one color band wavelength response; and
generating an image in YCrCb color space by directly combining outputs of the first and second sensors and outputting the image from the digital camera. - View Dependent Claims (44, 45, 46, 47, 48, 49)
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50. A method comprising:
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directly detecting luminance data using a broadband wavelength response and excluding use of RGB color data;
directly generating chrominance data by detecting red color band data and blue color band data, generating a red chroma component by directly combining the red color band data with the luminance data, and generating a blue chroma component by directly combining the blue color band data with the luminance data; and
outputting an image in YCrCb color space using the luminance and chrominance data. - View Dependent Claims (51)
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52. A computer readable medium containing executable instructions which when executed in a processing system provide direct luminance and chrominance detection by:
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detecting luminance data using a broadband sensor of a digital camera by directly sensing and outputting a broadband wavelength response at the broadband sensor and excluding use of RGB color data;
generating chrominance data using at least one color sensor of the digital camera by sensing and outputting at least one color band wavelength response; and
generating an image in YCrCb color space by directly combining outputs of the first and second sensors and outputting the image from the digital camera.
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Specification