US 11,800,045 B2
Image synthesis device for electronic mirror and method thereof
Hideyuki Tsutsumitake, Yokohama (JP)
Assigned to Kabushiki Kaisha Toshiba, Minato-ku (JP)
Filed by Kabushiki Kaisha Toshiba, Minato-ku (JP)
Filed on Apr. 26, 2022, as Appl. No. 17/729,080.
Application 17/729,080 is a continuation of application No. 17/323,033, filed on May 18, 2021, granted, now 11,356,618.
Application 17/323,033 is a continuation of application No. 16/661,439, filed on Oct. 23, 2019, granted, now 11,044,421, issued on Jun. 22, 2021.
Application 16/661,439 is a continuation of application No. 15/659,725, filed on Jul. 26, 2017, granted, now 10,506,178, issued on Dec. 10, 2019.
Claims priority of application No. 2017-008584 (JP), filed on Jan. 20, 2017.
Prior Publication US 2022/0256100 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 5/262 (2006.01); H04N 7/18 (2006.01); H04N 5/272 (2006.01); G06T 11/60 (2006.01); G06T 11/00 (2006.01); B60R 1/00 (2022.01); G06T 3/40 (2006.01); H04N 23/90 (2023.01); H04N 23/81 (2023.01)
CPC H04N 5/2628 (2013.01) [B60R 1/00 (2013.01); G06T 3/4038 (2013.01); G06T 11/001 (2013.01); G06T 11/60 (2013.01); H04N 5/272 (2013.01); H04N 7/181 (2013.01); H04N 23/811 (2023.01); H04N 23/90 (2023.01); B60R 2300/105 (2013.01); B60R 2300/303 (2013.01); B60R 2300/306 (2013.01); B60R 2300/8046 (2013.01); B60R 2300/8066 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An image synthesis device for an electronic mirror, the device comprising:
a rear camera which obtains a first image of a first view from a first position of a vehicle, as a rear view of the vehicle, by a first field of view;
a side camera which obtains a second image from a second position on a more front side than the first position, by a second field of view including a view obstruction as a side part of the vehicle, in a direction of the first view;
a translucent image processor which converts an image of the view obstruction included in the second image into a translucent image;
an image synthesizer which obtains a third image by synthesizing a projective transformation image, as a part of the first image, subjected to projective transformation into a view position of the side camera and corresponding to a part of the translucent image of the second image, wherein
the projective transformation image includes
a first projective transformation image obtained by subjecting an image of a viewpoint of the rear camera to projective transformation into an image of a view position of the side camera, based on a far plan position on the rear side of the vehicle, by a first image processor, and
a second projective transformation image obtained by subjecting an image of a viewpoint of the rear camera to projective transformation into an image of a viewpoint of the side camera based on a ground position closer to a capture position of the side camera than the far plan position, by a second image processor;
in the first projective transformation image or the second projective transformation image, the far plan position or the ground position is adjusted by a setting made in accordance with a speed of the vehicle; and
an opening for spraying compressed air is provided in front of lenses of the rear camera and the side camera.