Apparatus and method for displaying bird's eye view image of around vehicle to facilitate perception of three dimensional obstacles present on a seam of an image
First Claim
Patent Images
1. An apparatus for displaying a bird'"'"'s eye view image, comprising:
- a plurality of on-vehicle cameras photographing surrounding objects of a vehicle;
an image-converting unit wherein the image converting unit processes images obtained by the on-vehicle cameras, corrects lens distortion in each of images photographed by the on-vehicle cameras, converts a view point, trims display areas, and synthesizes a bird'"'"'s eye view image around the vehicle by connecting the trimmed display areas; and
an on-vehicle display unit displaying the synthesized bird'"'"'s eye view image to a driver or an occupant,wherein the image-converting unit produces first through n+1TH bird'"'"'s eye view images by sequentially drawing the second through n+1TH bird'"'"'s eye view images for second through n+1TH reference heights, which are sequentially higher than ground level indicated by a first reference height, when a three-dimensional obstacle placed adjacent to a seam is suitably detected from a bird'"'"'s eye view image of around the vehicle, where n is an integer greater than 0, in addition to drawing the bird'"'"'s eye view image for the ground level, and once the view point is converted, converts a view point of an image from a side view to a top view of the vehicle, andwherein image converting unit,converts the distortion-corrected image into an image seen from above the vehicle with reference to a view point-correcting look-up table,trims first through n+1TH display areas from the view point-converted image with reference to first through n+1TH display area-trimming look-up tables corresponding to the first through n+1TH reference heights, the first through n+1th reference heights including a first reference height 1 corresponding to the ground level and a reference height n+1 higher than the ground level, further sequentially converts the reference heights, andsynthesizes the first through n+1TH bird'"'"'s eye view images by connecting the first through n+1TH display areas.
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Abstract
The present invention features an apparatus and method for displaying a bird'"'"'s eye view image of around a vehicle in a relatively simple manner without causing a large amount of processing load, in which a driver can easily perceive a three-dimensional obstacle placed adjacent to a seam.
78 Citations
7 Claims
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1. An apparatus for displaying a bird'"'"'s eye view image, comprising:
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a plurality of on-vehicle cameras photographing surrounding objects of a vehicle; an image-converting unit wherein the image converting unit processes images obtained by the on-vehicle cameras, corrects lens distortion in each of images photographed by the on-vehicle cameras, converts a view point, trims display areas, and synthesizes a bird'"'"'s eye view image around the vehicle by connecting the trimmed display areas; and an on-vehicle display unit displaying the synthesized bird'"'"'s eye view image to a driver or an occupant, wherein the image-converting unit produces first through n+1TH bird'"'"'s eye view images by sequentially drawing the second through n+1TH bird'"'"'s eye view images for second through n+1TH reference heights, which are sequentially higher than ground level indicated by a first reference height, when a three-dimensional obstacle placed adjacent to a seam is suitably detected from a bird'"'"'s eye view image of around the vehicle, where n is an integer greater than 0, in addition to drawing the bird'"'"'s eye view image for the ground level, and once the view point is converted, converts a view point of an image from a side view to a top view of the vehicle, and wherein image converting unit, converts the distortion-corrected image into an image seen from above the vehicle with reference to a view point-correcting look-up table, trims first through n+1TH display areas from the view point-converted image with reference to first through n+1TH display area-trimming look-up tables corresponding to the first through n+1TH reference heights, the first through n+1th reference heights including a first reference height 1 corresponding to the ground level and a reference height n+1 higher than the ground level, further sequentially converts the reference heights, and synthesizes the first through n+1TH bird'"'"'s eye view images by connecting the first through n+1TH display areas. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for displaying a bird'"'"'s eye view image, comprising:
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photographing surrounding objects of a vehicle using a plurality of on-vehicle cameras; converting an image, wherein the image conversion includes correcting lens distortion in each of the images photographed by the on-vehicle cameras, converting a view point, trimming display areas, and synthesizing and drawing a bird'"'"'s eye view image around the vehicle by connecting the trimmed display areas; displaying the bird'"'"'s eye view image to a driver or an occupant using an on-vehicle display unit, wherein the image conversion includes converting reference heights to produce first through n+1TH bird'"'"'s eye view images by sequentially drawing the second through n+1TH bird'"'"'s eye view images for second through n+1TH reference heights, which are sequentially higher than ground level indicated by a first reference height, when a three dimensional obstacle placed adjacent to a seam is suitably detected from the bird'"'"'s eye view image of around the vehicle, where n is an integer greater than 0, in addition to drawing the bird'"'"'s eye view image for the ground level and when the view point is converted, converts a view point of an image from a side view to a top view of the vehicle, and wherein image converting unit, converts the distortion-corrected image into an image seen from above the vehicle with reference to a view point-correcting look-up table, trims first through n+1TH display areas from the view point-converted image with reference to first through n+1TH display area-trimming look-up tables corresponding to the first through n+1TH reference heights, the first through n+1TH reference heights including a first reference height 1 corresponding to the ground level and a reference height n+1 higher than the ground level, further sequentially converts the reference heights, and synthesizes the first through n+1TH bird'"'"'s eye view images by connecting the first through n+1TH display areas.
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Specification