Apparatus and method for camera calibration, and vehicle
AssigneeSanyo Electric Co., Ltd.
InventorsYohei Ishii, Hiroshi Kano, Kozo Okuda, Keisuke Asari
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Abstract
A camera calibration apparatus has a parameter deriver adapted to find parameters for projecting an image shot with a camera onto a predetermined surface. The parameter deriver finds the parameters based on a shot-for-calibration image from the camera, and the shot-for-calibration image includes a plurality of calibration patterns of previously known shapes arranged at different positions within the shooting area of the camera.
Claims8
A camera calibration apparatus comprising:
- a parameter deriver adapted to find parameters for projecting an image shot with a camera onto a predetermined surface, wherein
- the parameter deriver finds the parameters based on a shot-for-calibration image from the camera, and
- the shot-for-calibration image includes a plurality of calibration patterns of previously known shapes arranged at different positions within a shooting area of the camera.
A camera calibration apparatus comprising:
- a parameter deriver adapted to find parameters for projecting an image shot with a camera onto a predetermined surface, wherein
- the parameter deriver finds the parameters based on a shot-for-calibration image from the camera,
- the shot-for-calibration image includes a calibration pattern of a previously known shape arranged inside a shooting area of the camera, and
- the parameter deriver
- performs coordinate conversion on the calibration pattern on the shot-for-calibration image by using initial parameters based on previously set information and
- then performs adjustment on the initial parameters based on a shape of the calibration pattern after the coordinate conversion and previously known information on this shape
- in order to find, through this adjustment, the parameters definitively.
A camera calibration method for finding parameters for projecting an image shot with a camera onto a predetermined surface, comprising:
- a parameter derivation step of finding the parameters based on a shot-for-calibration image from the camera, wherein
- the shot-for-calibration image includes a plurality of calibration patterns of previously known shapes arranged at different positions within a shooting area of the camera.
A camera calibration method for finding parameters for projecting an image shot with a camera onto a predetermined surface, comprising:
- a parameter derivation step of finding the parameters based on a shot-for-calibration image from the camera, wherein
- the shot-for-calibration image includes a calibration pattern of a previously known shape arranged inside a shooting area of the camera, and
- the parameter derivation step comprises a parameter adjustment step in which
- coordinate conversion is performed on the calibration pattern on the shot-for-calibration image by using initial parameters based on previously set information and then
- adjustment is performed on the initial parameters based on a shape of the calibration pattern after the coordinate conversion and previously known information on this shape,
- so that, through this adjustment, the parameters are definitively found.
Dependencies are inferred from the claim text.