Imaging apparatus, image processing device, and image processing method
AssigneeCanon Kabushiki Kaisha
InventorShingo Hikosaka
Life of this patent
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Abstract
An imaging apparatus includes: a first interpolation unit that generates luminance interpolation values at a plurality of second pixels based on luminance values at a plurality of first pixels; a select unit that selects the plurality of second pixels at each of which an absolute value of a difference between each of the luminance interpolation values at the plurality of second pixels generated by the first interpolation unit and the luminance value at the plurality of first pixels of the first pixels is less than or equal to a predetermined value; and a second interpolation unit that generates a color interpolation value corresponding to one color component at the predetermined first pixel based on color values at the plurality of second pixels selected by the select unit.
Claims17
An imaging apparatus comprising:
- a pixel unit having a plurality of first pixels and a plurality of second pixels, wherein the plurality of first pixels have higher sensitivity than the plurality of second pixels and output luminance values, and the plurality of second pixels output color values including one color component of a plurality of colors;
- a first interpolation unit that generates luminance interpolation values at the plurality of second pixels based on the luminance values at the plurality of first pixels;
- a calculation unit that calculates an absolute value of a difference between each of the luminance interpolation values at the plurality of second pixels generated by the first interpolation unit and the luminance value at a predetermined first pixel of the first pixels;
- a select unit that selects the plurality of second pixels at each of which the absolute value of the difference is less than or equal to a predetermined value;
- and
- a second interpolation unit that generates a color interpolation value at the predetermined first pixel based on the color values at the plurality of second pixels selected by the select unit.
An image processing device that processes a signal from a solid state imaging device comprising a pixel unit having a plurality of first pixels and a plurality of second pixels, wherein the plurality of first pixels have higher sensitivity than the plurality of second pixels and output luminance values, and the plurality of second pixels output color values including one color component of a plurality of colors, the image processing device comprising:
- a first interpolation unit that generates luminance interpolation values at the plurality of second pixels based on the luminance values at the plurality of first pixels;
- a calculation unit that calculates an absolute value of a difference between each of the luminance interpolation values at the plurality of second pixels generated by the first interpolation unit and the luminance value at a predetermined first pixel of the first pixels;
- a select unit that selects the plurality of second pixels at each of which the absolute value of the difference is less than or equal to a predetermined value;
- and
- a second interpolation unit that generates a color interpolation value at the predetermined first pixel based on the color values at the plurality of second pixels selected by the select unit.
An image processing method for a pixel unit comprising a plurality of first pixels and a plurality of second pixels, the plurality of first pixels having higher sensitivity than the plurality of second pixels and outputting luminance values including a luminance component, and the plurality of second pixels outputting color values including one color component of a plurality of colors the method comprising:
- generating luminance interpolation values at the plurality of second pixels based on the luminance values at the plurality of first pixels;
- calculating an absolute value of a difference between each of the luminance interpolation values at the plurality of second pixels and the luminance value at a redetermined first pixel of the first pixels;
- selecting the plurality of second pixels at each of which the absolute value of the difference is less than or equal to a predetermined value;
- and
- generating a color interpolation value at the predetermined first pixel based on the color values at the selected plurality of second pixels.
Dependencies are inferred from the claim text.