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US 11,443,410 B2Granted
Image processing method and image processing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroto Mizohana, Keita Dan
Life of this patent
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Abstract
An image processing method includes a matching cost calculating process of calculating matching costs in a unit of sub-pixels having higher resolution than first and second images by using an image of a reference area contained in the first image in which a target object is imaged and images of a plurality of comparison areas contained in the second image in which the target object is imaged, and a synthesized cost calculating process of calculating synthesized costs related to the reference area based on comparison results of values related to the plurality of matching costs calculated in the matching cost calculating process.
Claims11
An image processing method comprising:
- a matching cost calculating process of calculating matching costs in a unit of sub-pixels having higher resolution than first and second images by using (1) an image of a reference area based on the first image in which a target object is imaged and (2) images of a plurality of comparison areas based on the second image in which the target object is imaged;
- and
- a synthesized cost calculating process of calculating synthesized costs related to the reference area based on comparison results of values related to the plurality of matching costs calculated in the matching cost calculating process,
- wherein the matching costs in the unit of sub-pixels are calculated based on a comparison of the reference area contained in a first high resolution image obtained by enhancing resolution of the first image with the plurality of comparison areas contained in a second high resolution image obtained by enhancing resolution of the second image in the matching cost calculating process, or
- wherein the matching costs in the unit of sub-pixels are calculated based on matching costs in a unit of pixels calculated by comparing the reference area contained in the first image with the plurality of comparison areas contained in the second image in the matching cost calculating step, by using a correlation function between parallax amounts and the matching costs related to the reference area and estimated based on the matching costs in the unit of pixels calculated by comparing the reference area contained in the first image and the plurality of comparison areas contained in the second image.
2 more elements
An image processing method, comprising:
- a matching cost calculating process of calculating matching costs in a unit of sub-pixels having higher resolution than first and second images by using (1) an image of a reference area based on the first image in which a target object is imaged and (2) images of a plurality of comparison areas based on the second image in which the target object is imaged;
- and
- a synthesized cost calculating process of calculating synthesized costs related to the reference area based on comparison results of values related to the plurality of matching costs calculated in the matching cost calculating process,
- wherein the synthesized costs are calculated by acting a penalty cost which corresponds to the size of the reference area in the synthesized cost calculating process.
1 more element
An image processing apparatus comprising:
- an image acquisition portion configured to acquire first and second images in which a target object is imaged;
- a cost map generating portion configured to calculate matching costs in a unit of sub-pixels having higher resolution than the first and second images by using (1) an image of a reference area based on the first image and (2) images of a plurality of comparison areas based on the second image;
- and
- a synthesized cost calculating portion configured to calculate synthesized costs related to the reference area based on comparison results of values related to the plurality of matching costs calculated by the cost map generating portion,
- wherein the cost map generating portion calculates the matching costs in the unit of sub-pixels based on a comparison of the reference area contained in a first high resolution image obtained by enhancing resolution of the first image with the plurality of comparison areas contained in a second high resolution image obtained by enhancing resolution of the second image, or
- wherein the cost map generating portion calculates matching costs in the unit of sub-pixels based on matching costs in a unit of pixels calculated by comparing the reference area contained in the first image with the plurality of comparison areas contained in the second image, by using a correlation function between parallax amounts and the matching costs related to the reference area and estimated based on the calculated matching costs in the unit of pixels.
3 more elements
An image processing apparatus comprising:
- an image acquisition portion configured to acquire first and second images in which a target object is imaged;
- a cost map generating portion configured to calculate matching costs in a unit of sub-pixels having higher resolution than the first and second images by using (1) an image of a reference area contained in the first image and (2) images of a plurality of comparison areas contained in the second image;
- and
- a synthesized cost calculating portion configured to calculate synthesized costs related to the reference area based on comparison results of values related to the plurality of matching costs calculated by the cost map generating portion,
- wherein the synthesized cost generating portion calculates the synthesized cost by acting a penalty cost which corresponding to the size of the reference area.
2 more elements
Dependencies are inferred from the claim text.