Image processing device and imaging device including the same
AssigneeSK hynix Inc.
InventorKazuhiro Yahata
Life of this patent
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Abstract
An image processing device and an imaging device including the same are disclosed, which relate to technology relating to the image processing device for generating a parallax image required for autofocus. The image processing device includes: an image combiner configured to generate a plurality of color images by combining pixel data of unit pixels arranged at the same position in each of a plurality of pixel groups; and a luminance image processor configured to calculate weights based on texture amplitudes of the plurality of color images and texture correlation values between the plurality of color images, and to generate a luminance image by applying the weights to the plurality of color images.
Claims20
An image processing device comprising:
- an image combiner configured to generate a plurality of color images by combining pixel data of unit pixels arranged at a same position in each of a plurality of pixel groups of a pixel array;
- and
- a luminance image processor configured to calculate weights based on texture amplitudes of the plurality of color images and texture correlation values between the plurality of color images, and to generate a luminance image by applying the weights to the plurality of color images.
An imaging device comprising:
- a first texture amplitude calculator configured to calculate a texture amplitude of a first color image;
- a first noise amount calculator configured to calculate a noise amount of the first color image;
- a calculator configured to generate an average image by averaging a second color image and a third color image having a same color as the second color image;
- a first texture correlation determiner configured to determine a texture correlation value between the first color image and the average image;
- a second texture amplitude calculator configured to calculate a texture amplitude of the average image;
- a second noise amount calculator configured to calculate a noise amount of the average image;
- a first weight calculator configured to calculate a weight based on output signals of the first texture amplitude calculator and the second texture amplitude calculator, output signals of the first noise amount calculator and the second noise amount calculator, and an output signal of the first texture correlation determiner;
- and
- a synthesizer configured to generate a luminance image to be used for autofocus adjustments by applying the weight to the first color image and the average image.
Dependencies are inferred from the claim text.