US 12,172,871 B2
Crane information display system
Mizuki Yoneda, Kagawa (JP)
Assigned to TADANO LTD., Kagawa (JP)
Appl. No. 17/763,051
Filed by TADANO LTD., Kagawa (JP)
PCT Filed Sep. 25, 2020, PCT No. PCT/JP2020/036296
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/060473, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-176782 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0356048 A1, Nov. 10, 2022
Int. Cl. G06T 7/00 (2017.01); B66C 13/40 (2006.01); B66C 23/90 (2006.01)
CPC B66C 13/40 (2013.01) [B66C 23/905 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A crane information display system comprising:
a first information display device that is installed at a location where a crane is scheduled to be installed and that displays information about the crane, by characters, marks, signs or patterns provided for the surfaces thereof, and
a terminal device that mounts a camera to obtain a camera image by imaging, with the camera, the first information display device,
wherein the terminal device comprises a hardware processor configured to
read, from the camera image, display information of the first information display device to acquire information about the crane,
generate, on a basis of the acquired information about the crane, image information about a virtual crane that corresponds to a three-dimensional image of the crane,
read, from the camera image, the display information of the first information display device to acquire information about a reference shape of the first information display device, and extract, from the camera image, information about an outline shape of the first information display device that appears in the camera image, and calculate, on a basis of the reference shape of the first information display device and the information about the outline shape of the first information display device, a position at which the virtual crane is to be disposed and a posture to be taken by the virtual crane in the camera image,
convert the generated image information about the virtual crane into image information that corresponds to the calculated position and the posture of the virtual crane, and
overlay and display, onto the camera image, the virtual crane about which the image information has been converted.