Matching block searching method and device in image registration and storage medium

The invention relates to a matching block searching method and device in image registration and a storage medium, and the method comprises the steps: obtaining a reference image, a to-be-matched image, control point information and a preset searching feature, and the preset searching feature comprises a preset matching size; determining an initial matching block according to the control point information and the preset matching size; determining image information of the initial matching block, and determining a target search feature according to the image information; and determining a reference matching block in the reference image according to the control point information and the target search feature, and searching a target matching block corresponding to the reference matching block in the to-be-matched image. By means of the method, when the method is applied to X-ray contrast image registration, the problem that an existing X-ray contrast image registration algorithm cannot adaptively determine the siz