Image processing device and method for processing image signal
AssigneeSK hynix Inc.
InventorKazuhiro YAHATA
Life of this patent
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Abstract
Image sensing devices, image processing devices, and image signal processing methods are disclosed. In an embodiment, an image processing device includes a reference pixel determinator configured to receive first phase image data including pixel data of a first target pixel and determines, as a first reference pixel for the first target pixel, at least one pixel that is located in a direction perpendicular to a phase difference direction of the first phase image data, with respect to the first target pixel, and a noise reducer configured to perform noise reduction processing on the pixel data of the first target pixel by using pixel data of the first reference pixel.
Claims20
An image processing device comprising:
- a reference pixel determinator configured to:
- receive first phase image data of an image captured by an imaging sensing device, the first phase image data including pixel data of a first target pixel within the image sensing device;
- and determine, as a first reference pixel for the first target pixel, at least one pixel that is located in a direction perpendicular to a phase difference direction of the first phase image data, with respect to the first target pixel;
- and
- a noise reducer configured to receive pixel data of the first reference pixel and the pixel data of the first target pixel from the reference pixel determinator and configured to perform noise reduction processing on the pixel data of the first target pixel by using the pixel data of the first reference pixel.
An image signal processing method comprising:
- receiving, by an image processing device, a phase difference image in a first direction from an image sensing device that captures an image;
- determining, by the image processing device, as a reference pixel, at least one pixel that is located in a second direction perpendicular to the first direction from a target pixel included in the phase difference image;
- and
- performing, by the image processing device, noise reduction processing on pixel data of the target pixel by using pixel data of the reference pixel.
An image processing device comprising:
- a reference pixel determinator configured to:
- receive phase image data including pixel data of a target pixel;
- set a plurality of pixel groups, each including the target pixel and at least one pixel located in a direction perpendicular to a phase difference direction of a phase image, with respect to a pixel adjacent to the target pixel;
- select one of the plurality of pixel groups;
- and determine at least one pixel included in the selected pixel group as a reference pixel;
- and
- a noise reducer configured to perform noise reduction processing on the pixel data of the target pixel by using pixel data of the reference pixel.
Dependencies are inferred from the claim text.