US 12,073,573 B2
Ophthalmologic image processing device and non-transitory computer-readable storage medium storing computer-readable instructions
Yoshiki Kumagai, Gamagori (JP); and Ryosuke Shiba, Gamagori (JP)
Assigned to NIDEK CO., LTD., Gamagori (JP)
Filed by NIDEK CO., LTD., Gamagori (JP)
Filed on Mar. 30, 2021, as Appl. No. 17/217,928.
Claims priority of application No. 2020-059677 (JP), filed on Mar. 30, 2020.
Prior Publication US 2021/0304427 A1, Sep. 30, 2021
Int. Cl. G06T 7/37 (2017.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01)
CPC G06T 7/37 (2017.01) [G06T 7/0012 (2013.01); G06T 11/008 (2013.01); G06T 2207/10028 (2013.01); G06T 2207/10101 (2013.01); G06T 2207/30041 (2013.01); G06T 2210/41 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An ophthalmologic image processing device that processes data of ophthalmologic images of a tissue of a subject eye, including a first ophthalmologic image and a second ophthalmologic image, wherein the ophthalmologic images are scanning images that extend in a first direction and a second direction crossing the first direction and are acquired by scanning the tissue of the subject eye with light and temporally continuously receiving the light from the tissue, the ophthalmologic image processing device comprising a processor,
wherein the processor performs:
acquiring the first ophthalmologic image and the second ophthalmologic image, the first and the second ophthalmologic images being generated by photographing the same part in the tissue of the same subject eye;
acquiring intermediate information that is information of the first ophthalmologic image and the second ophthalmologic image from which an influence of a position shift with respect to the first direction at each position in the second direction is excluded, the intermediate information being information of a power spectrum image that is acquired by applying a Fourier transform, with respect to the first direction, to each of the first and second ophthalmologic images;
first alignment that performs alignment with respect to the second direction between the first ophthalmologic image and the second ophthalmologic image, based on the intermediate information acquired from the first ophthalmologic image and the intermediate information acquired from the second ophthalmologic image; and
second alignment that performs alignment with respect to the first direction between pixels at the same position with respect to the second direction in the first ophthalmologic image and the second ophthalmologic image for which the alignment with respect to the second direction has been performed in the first alignment.