US 12,433,387 B2
Contour detection apparatus, printing apparatus, contour detection method and storage medium
Masaaki Sasaki, Hachioji (JP)
Assigned to CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed on Aug. 2, 2022, as Appl. No. 17/879,621.
Claims priority of application No. 2021-127595 (JP), filed on Aug. 3, 2021.
Prior Publication US 2023/0044135 A1, Feb. 9, 2023
Int. Cl. A45D 29/00 (2006.01); G06T 7/149 (2017.01)
CPC A45D 29/00 (2013.01) [G06T 7/149 (2017.01); A45D 2029/005 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A contour detection apparatus comprising at least one processor that
detects a first nail contour defining a nail region from a finger image of a finger including a nail by performing fitting with a nail contour model,
obtains a second nail contour input from a user against the first nail contour that the user does not approve, and
classifies the first nail contour as a group based on dimensional information on dimensions of the first nail contour, and derives difference information indicating a difference between the first nail contour and the second nail contour,
wherein the processor performs a correction process with the difference information on another first nail contour that is newly detected and not approved by the user, and the difference information includes: information indicating, among feature points constituting the first nail contour against which the second nail contour is input, a maximum error feature point having a largest difference from the second nail contour; and information indicating a magnitude of the difference.