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US 11,386,566 B2Granted
Image processing apparatus and method
AssigneeSamsung Electronics Co., Ltd.
InventorsInwoo Ha, Hyong Euk Lee, Young Hun Sung, Minsu Ahn
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Abstract
An image processing apparatus includes a first processor configured to obtain, from a color image, an illumination element image and an albedo element image corresponding to the color image, and a second processor configured to divide the illumination element image into a plurality of subelement images each corresponding to the color image.
Claims20
An image processing apparatus comprising:
- a first processor configured to obtain, from a color image, an illumination element image and an albedo element image corresponding to the color image;
- and
- a second processor configured to divide the illumination element image into subelement images each corresponding to the color image based on a degree of correlation between an illumination element change rate between neighboring pixels in at least one area of the color image and a normal vector change rate between the neighboring pixels,
- wherein the illumination element image is a derivative color image from which the albedo element is excluded.
1 more element
An image processing apparatus comprising:
- a first processor configured to obtain, from a color image, an illumination element image and an albedo element image corresponding to the color image;
- and
- a second processor configured to divide the illumination element image into subelement images each corresponding to the color image,
- wherein the illumination element image is a derivative color image from which the albedo element is excluded, and
- wherein the second processor is further configured to calculate a spherical harmonic function indicating a corresponding relationship between a normal vector and a shading element from an illumination element change between neighboring pixels in at least one area of the color image.
2 more elements
An image processing method comprising:
- obtaining, from a color image, an illumination element image and an albedo element image corresponding to the color image;
- and
- dividing the illumination element image into subelement images each corresponding to the color image based on a degree of correlation between an illumination element change rate between neighboring pixels in at least one area of the color image and a normal vector change rate between the neighboring pixels,
- wherein the illumination element image is a derivative color image from which the albedo element is excluded.
1 more element
An image processing method comprising:
- obtain an illumination element image by excluding an albedo element image from a color image using a feature of a frequency change for a color change between pixels in the color image;
- and
- decompose the illumination element image into subelement images each corresponding to the color image, dependent on a result of comparing an illumination element change rate between neighboring pixels in at least one area of the color image and a normal vector change rate between the neighboring pixels.
Dependencies are inferred from the claim text.