TECHNICAL FIELD

The present invention relates to a calculation system and a calculation method.

BACKGROUND ART

Incorporation of inference functions into an edge is progressing for autonomous operations of automobiles and industrial equipment. Since an inference error of edge equipment causes a serious accident, error detection is essential. A configuration is known in which an inference units such as neural network are made multiple redundant, inference results of the inference units for the same input are compared, and an inference unit that has an inference result different from the other inference units is specified, so as to perform detection of inference errors due to faults or failures. However, in a case of multiple redundancy, all inference units output the same inference result even if the inference is incorrect due to poor learning. Therefore, inference errors due to the poor learning cannot be detected due to the multiple redundancy of the inference units. PTL 1 disclose a signal processing device which includes a labeling unit for labeling according to a type of an imaged subject, a distance measuring unit for acquiring distance measuring information at distance measuring points disposed discretely, and an interpolation generation unit for interpolating and generating distance information between adjacent distance measuring points on the subject labeled on the same type based on a labeling result by the labeling unit.

CITATION LIST

Patent Literature

PTL 1: JP-A-2019-028861

SUMMARY OF INVENTION

Technical Problem

The invention described in PTL 1 cannot detect a discrimination error in a type of an object.

Solution to Problem

A calculation system according to a first aspect of the invention is a calculation system including a first device and a second device. The first device includes: a first object map generation unit configured to calculate, using first image information that is image information acquired by the first device, a first object map indicating a type of an object and a position of the object; and a first communication unit configured to transmit the first object map to the second device. The second device includes: a second object map generation unit configured to calculate, using second image information that is image information acquired by the second device, a second object map indicating a type of an object and a position of the object; and a comparison unit configured to compare the first object map and the second object map.

A calculation system according to a second aspect of the invention is a calculation system including a server and a plurality of terminals. Each of the plurality of terminals includes: an object map generation unit configured to calculate, using acquired image information, an object map indicating a type of an object and a position of the object; and a terminal communication unit configured to transmit the object map to the server. The server includes: an object map database storing the object map received from the plurality of terminals; and an error determination unit configured to determine correctness of the type of the object included in the received object map by a majority decision based on information stored in the object map database, and notify the terminal from which the object map is transmitted of the determination.

A calculation method according to a third aspect of the invention is a calculation method performed by a calculation system including a first device and a second device. The calculation method includes: by the first device, calculating, using first image information that is image information acquired by the first device, a first object map indicating a type of an object and a position of the object; and transmitting the first object map to the second device, and by the second device, calculating, using second image information that is image information acquired by the second device, a second object map indicating a type of an object and a position of the object; and comparing the first object map and the second object map.

Advantageous Effect

According to the invention, it is possible to detect a discrimination error in a type of an object.

