US 12,488,123 B2
Image capturing apparatus capable of guaranteeing authenticity of digital image, management system, control method, and storage medium
Daiyu Ueno, Kanagawa (JP); Keiichiro Kubo, Saitama (JP); Keisuke Tanaka, Kanagawa (JP); Naohiko Tsuchida, Tokyo (JP); Atsushi Fujita, Tokyo (JP); and Minoru Sakaida, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 7, 2022, as Appl. No. 17/962,396.
Claims priority of application No. 2021-170402 (JP), filed on Oct. 18, 2021; and application No. 2022-137220 (JP), filed on Aug. 30, 2022.
Prior Publication US 2023/0121095 A1, Apr. 20, 2023
Int. Cl. H04L 29/06 (2006.01); G06F 21/60 (2013.01); G06F 21/62 (2013.01); G06F 21/64 (2013.01); H04L 9/00 (2022.01); H04L 9/32 (2006.01)
CPC G06F 21/6209 (2013.01) [G06F 21/602 (2013.01); G06F 21/64 (2013.01); H04L 9/3236 (2013.01); H04L 9/50 (2022.05)] 9 Claims
OG exemplary drawing
 
1. An image capturing apparatus comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions that, when executed by the at least one processor, perform operations as:
a first generation unit configured to generate an image file;
a processing unit configured to perform conversion processing on the image file for reducing a file size of the image file;
a calculation unit configured to calculate a hash value by applying a hash function to the processed image file;
a second generation unit configured to generate reduction processing information indicating a method of reducing the file size of the image file; and
a transmission unit configured to transmit the image file, the hash value, and the reduction processing information, in a state associated with each other, to a management system that registers data concerning the image file including the hash value in a blockchain,
wherein the reduction processing information includes information on the image file before the conversion processing and information on the image file after the conversion processing,
wherein the information on the image file before the conversion processing and the information on the image file after the conversion processing include image file format information that indicates file type.