Patent ID: 11893706
Assignee: NEC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. An image correction device comprising:
a memory containing program instructions; and
a processor coupled to the memory, wherein the processor is configured to execute the program instructions to:
acquire a plurality of band images obtained by imaging a subject;
acquire a high-resolution image obtained by imaging the subject, the high-resolution image having a resolution that is higher than a resolution of the band images;
by using at least one of the band images as a reference band image and at least one other of the band images as an object band image, acquire a position difference between the object band image and the reference band image;
by respectively using one or more pixels of the object band image as one or more object pixels, for each object pixel, determine a pixel value of each of a plurality of sub regions obtained by dividing an imaging region of the object pixel, on a basis of a pixel value of the object pixel and a relationship between pixel values of a plurality of pixels of the high-resolution image corresponding to the object pixel, and create a corrected band image that has a pixel value of light on the object band image at a pixel position of the reference band image from the determined pixel value of each of the sub regions and the position difference; and
output the corrected band image, wherein
when creating the corrected band image, a ratio of the pixel values of the plurality of pixels of the high-resolution image corresponding to the object pixel is used as the relationship between the pixel values, and each pixel value of the high-resolution image is adjusted by using a minimum pixel value of the high-resolution image.