Distance measuring apparatus, vehicle and method of calibration in distance measuring apparatus
AssigneeRicoh Company, Ltd.
InventorsShuichi Suzuki, Mitsuru Nakajima, Motoyasu Murai
Life of this patent
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Abstract
A distance measuring apparatus is installed in a thing and a distance between the thing and a measuring target varies. The distance measuring apparatus includes a plurality of imaging devices; a first distance acquisition part that acquires a first distance to the measuring target based on respective sets of image data taken by the plurality of imaging devices; a second distance acquisition part that acquires a second distance to the measuring target based on a reflected wave of an electromagnetic wave irradiated onto the measuring target; and a holding member that holds the plurality of imaging devices and the second distance acquisition part.
Claims20
A distance measuring apparatus installed in a thing, a distance between the thing and a measuring target varying, the distance measuring apparatus comprising:
- a plurality of imaging devices;
- first distance acquisition circuitry that acquires a first distance to the measuring target based on sets of image data taken by the respective imaging devices;
- second distance acquisition circuitry that irradiates an electromagnetic wave onto the measuring target and acquires a second distance to the measuring target based on a reflected wave of the electromagnetic wave;
- a holding member that holds the imaging devices and the second distance acquisition circuitry such that there is a distance in a direction parallel with optical axes of the imaging devices between a point from which the first distance is measured and a point from which the second distance is measured;
- and
- calibration calculation circuitry that calibrates the first distance based on the distance in the direction parallel with the optical axes of the imaging devices between the point from which the first distance is measured and the point from which the second distance is measured.
A distance measuring apparatus installed in a thing, a distance between the thing and a measuring target varying, the distance measuring apparatus comprising:
- a plurality of imaging devices;
- first distance acquisition circuitry that acquires a first distance to the measuring target based on sets of image data taken by the respective imaging devices;
- and
- second distance acquisition circuitry that irradiates an electromagnetic wave onto the measuring target and acquires a second distance to the measuring target based on a reflected wave of the electromagnetic wave, wherein
- a distance in a direction parallel with optical axes of the imaging devices between a point from which the first distance is measured and a point from which the second distance is measured is determined and used to calibrate the first distance acquisition circuitry.
Dependencies are inferred from the claim text.