Patent ID: 11948328
Assignee: OLYMPUS CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An image-processing device comprising:
at least one processor comprising hardware, the processor being configured to:
set a plurality of discrete measurement regions in a standard image and a reference image selected from a plurality of images acquired in a time series manner and calculate motion vectors in the respective measurement regions;
set a region of interest in the standard image;
select, from the plurality of calculated motion vectors, the motion vectors in the set region of interest;
estimate a homographic-transformation matrix that represents a motion in the region of interest by using the selected motion vectors;
evaluate an error in the homographic-transformation matrix on the basis of the estimated homographic-transformation matrix and the calculated motion vectors; and
set, on the basis of the evaluation result for the homographic-transformation matrix estimated on the basis of a first region of interest, a second region of interest a size of which is increased as compared with that of the first region of interest.