Image-sensing apparatus
First Claim
Patent Images
1. An image-sensing apparatus comprising:
- a solid-state image sensor including;
a plurality of pixels that perform photoelectric conversion so as to generate output signals that vary with a first characteristic in a first region and with a second characteristic in a second region with respect to amount of incident light; and
a plurality of types of color filters provided in vicinity of the pixels; and
a white balance circuit that performs white balance processing by performing, on at least one of different types of chrominance signals outputted as corresponding to the different types of color filters from the solid-state image sensor, different calculation operations fit respectively for the first and second characteristics in the first and second regions so as to thereby generate new output data.
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Abstract
A database obtained based on the photoelectric conversion characteristics for R and G signals and a database obtained based on the photoelectric conversion characteristics for G and B signals are stored in LUTs respectively. Signal value calculators read out the databases from the LUTs respectively and perform white balance processing on the R and B signals respectively.
68 Citations
20 Claims
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1. An image-sensing apparatus comprising:
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a solid-state image sensor including;
a plurality of pixels that perform photoelectric conversion so as to generate output signals that vary with a first characteristic in a first region and with a second characteristic in a second region with respect to amount of incident light; and
a plurality of types of color filters provided in vicinity of the pixels; and
a white balance circuit that performs white balance processing by performing, on at least one of different types of chrominance signals outputted as corresponding to the different types of color filters from the solid-state image sensor, different calculation operations fit respectively for the first and second characteristics in the first and second regions so as to thereby generate new output data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image-sensing apparatus comprising:
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a solid-state image sensor including;
a plurality of pixels that perform photoelectric conversion so as to generate output signals that vary with a first characteristic in a first region and with a second characteristic in a second region with respect to amount of incident light; and
a plurality of types of color filters provided in vicinity of the pixels; and
a white balance circuit having a first look-up table in which is stored information with which to perform white balance processing on different types of chrominance signals outputted as corresponding to the different types of color filters from the solid-state image sensor, wherein the first look-up table provides, as output data, signal levels that are corrected, relative to levels of input chrominance signals, for deviations among the different types of chrominance signals in such a way as to correspond to the first and second regions. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An image-sensing apparatus comprising:
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a solid-state image sensor including;
a plurality of pixels that perform photoelectric conversion so as to generate output signals that vary with a first characteristic in a first region and with a second characteristic in a second region with respect to amount of incident light; and
a plurality of types of color filters provided in vicinity of the pixels; and
a white balance circuit having a look-up table in which is stored information with which to adjust a white balance among different types of chrominance signals outputted as corresponding to the different types of color filters from the solid-state image sensor, wherein the look-up table provides, as output data, signal levels having white balance processing and processing other than the white balance processing performed thereon. - View Dependent Claims (19, 20)
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Specification