US 11,989,907 B2
Cloud observation device, cloud observation method, and program
Yuya Takashima, Nishinomiya (JP); Masahiro Minowa, Nishinomiya (JP); and Shigeaki Okumura, Nishinomiya (JP)
Assigned to Furuno Electric Co., Ltd., Nishinomiya (JP)
Filed by Furuno Electric Co., Ltd., Nishinomiya (JP)
Filed on Sep. 3, 2021, as Appl. No. 17/466,284.
Application 17/466,284 is a continuation of application No. PCT/JP2020/004220, filed on Feb. 5, 2020.
Claims priority of application No. 2019-040866 (JP), filed on Mar. 6, 2019.
Prior Publication US 2021/0398312 A1, Dec. 23, 2021
Int. Cl. G01W 1/12 (2006.01); G01W 1/02 (2006.01); G06T 3/4053 (2024.01); G06T 5/50 (2006.01); G06T 7/70 (2017.01)
CPC G06T 7/70 (2017.01) [G01W 1/02 (2013.01); G01W 1/12 (2013.01); G06T 3/4053 (2013.01); G06T 5/50 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/20076 (2013.01); G06T 2207/30192 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A cloud observation device, comprising:
processing circuitry configured
to acquire an image of the sky captured by a camera;
to extract clouds in the image;
to determine a sun position in the image;
to acquire cloud movement information including at least a cloud movement direction in the image; and
to set a sunshine probability calculation area having the sun position as a base point in the image, wherein:
the processing circuitry sets the sunshine probability calculation area based on the cloud movement direction with the sun position as the base point; and
the processing circuitry sets the sunshine probability calculation area wider on an upstream side than on a downstream side in the cloud movement direction with the sun position as the base point; and
to calculate a sunshine probability after a predetermined period of time has elapsed based on the sunshine probability calculation area and the extracted clouds.