Image processing apparatus, image processing method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorManabu Ohga
Life of this patent
Estimating the term…
Abstract
An apparatus includes a first acquisition unit configured to, with a viewpoint set to a position of an object, acquire a plurality of environment maps for each position of light sources, the environment maps being obtained by imaging a surrounding environment from the viewpoint, a second acquisition unit configured to acquire a plurality of captured images for each position of the light sources, the captured images being obtained by imaging from a plurality of directions the object irradiated with light by the light sources, and a determination unit configured to determine reflection characteristics of the object based on the environment maps and the plurality of captured images.
Claims20
An apparatus comprising:
- one or more processors;
- and
- one or more memories storing instructions, when executed by the one or more processors, causing the apparatus to function as:
- a first acquisition unit configured to, with a viewpoint set to a position of an object, acquire a plurality of environment maps for each position of light sources, the environment maps being obtained by imaging a surrounding environment from the viewpoint;
- a second acquisition unit configured to acquire a plurality of captured images for each position of the light sources, the captured images being obtained by imaging from a plurality of directions the object irradiated with light by the light sources;
- a segmentation unit configured to segment each of the plurality of environment maps into a plurality of solid angles by performing region segmentation based on a Voronoi diagram with points,
- wherein luminance in the environment map is larger than a predetermined value, set as kernel points;
- and
- a determination unit configured to determine reflection characteristics of the object based on the luminance corresponding to each of the plurality of solid angles and the plurality of captured images.
A method comprising:
- acquiring, with a viewpoint set to a position of an object, a plurality of environment maps for each position of light sources, the environment maps being obtained by imaging a surrounding environment from the viewpoint;
- acquiring a plurality of captured images for each position of the light sources, the captured images being obtained by imaging from a plurality of directions the object irradiated with light by the light sources;
- segmenting each of the plurality of environment maps into a plurality of solid angles by performing region segmentation based on a Voronoi diagram with points,
- wherein luminance in the environment map is larger than a predetermined value, set as kernel points;
- and
- determining reflection characteristics of the object based on the luminance corresponding to each of the plurality of solid angles and the plurality of captured images.
A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method comprising:
- acquiring, with a viewpoint set to a position of an object, a plurality of environment maps for each position of light sources, the environment maps being obtained by imaging a surrounding environment from the viewpoint;
- acquiring a plurality of captured images for each position of the light sources, the captured images being obtained by imaging from a plurality of directions the object irradiated with light by the light sources;
- segmenting each of the plurality of environment maps into a plurality of solid angles by performing region segmentation based on a Voronoi diagram with points,
- wherein luminance in the environment map is larger than a predetermined value, set as kernel points;
- and
- determining reflection characteristics of the object based on the luminance corresponding to each of the plurality of solid angles and the plurality of captured images.
Dependencies are inferred from the claim text.