Overhead image generation apparatus
AssigneeToshiba Alpine Automotive Technology Corporation
InventorMasanori Kosaki
Life of this patent
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Abstract
According to one embodiment, an overhead image generation apparatus includes: a plurality of cameras mounted to a vehicle; an image processor that takes in images of respective cameras, generates, for respective cameras, overhead images that have been subjected to viewpoint conversion processing based on calibration data of the cameras and virtual viewpoint/line-of-sight information, and generates a synthesized overhead view by connecting the overhead images at their boundaries; and a display device that displays the synthesized overhead view generated by the image processor, wherein a proportion of a shape of the overhead image in a height direction is changed in proportion to an arrangement height of each camera.
Claims12
An overhead image generation apparatus comprising:
- a plurality of cameras mounted to a vehicle;
- an image processor that takes in images of respective cameras, generates, for respective cameras, overhead images that have been subjected to viewpoint conversion processing based on calibration data of the cameras and virtual viewpoint/line-of-sight information, and generates a synthesized overhead view by connecting the overhead images at their boundaries;
- and
- a display device that displays the synthesized overhead view generated by the image processor, wherein
- the image processor includes:
- a camera calibration data storage that stores the calibration data of each camera that has been previously acquired;
- a viewpoint/line-of-sight information storage that stores viewpoint/line-of-sight information related to the viewpoint/line-of-sight direction;
- an overhead LUT creator that takes in the calibration data of each camera and the viewpoint/line-of-sight information and creates a lookup table for coordinate conversion for viewpoint conversion of the image taken by each camera previously assuming a limited viewpoint/line-of-sight;
- and
- an overhead image generator that takes in the images of the respective camera, inputs thereto information of the lookup table, generates a synthesized overhead image in which horizontal lines of the respective images are aligned;
- and
- a proportion of a shape of the overhead image in a height direction is changed in proportion to an arrangement height of each camera.
An overhead image generation apparatus comprising:
- a plurality of cameras mounted to a vehicle;
- an image processor that takes in images of respective cameras, generates, for respective cameras, overhead images that have been subjected to viewpoint conversion processing based on calibration data of the cameras and virtual viewpoint/line-of-sight information, and generates a synthesized overhead view by connecting the overhead images at their boundaries;
- and
- a display device that displays the synthesized overhead view generated by the image processor, wherein
- a proportion of a shape of the overhead image in a height direction is changed in proportion to an arrangement height of each camera;
- the overhead image based on the image of each camera has a ground plane area in a radial direction from a vehicle center and is created by changing an aspect ratio thereof.
An overhead image generation apparatus comprising:
- a plurality of cameras mounted to a vehicle;
- an image processor that takes in images of respective cameras, generates, for respective cameras, overhead images that have been subjected to viewpoint conversion processing based on calibration data of the cameras and virtual viewpoint/line-of-sight information, and generates a synthesized overhead view by connecting the overhead images at their boundaries;
- and
- a display device that displays the synthesized overhead view generated by the image processor, wherein
- a proportion of a shape of the overhead image in a height direction is changed in proportion to an arrangement height of each camera;
- the overhead image based on the image of each camera has a ground plane area in a longitudinal and lateral directions from the vehicle center and is created by changing an aspect ratio thereof.
Dependencies are inferred from the claim text.