1. A method of synthesizing a panorama image using a scanning charged-particle microscope, comprising: an imaging recipe creating process, which includes a region deciding step of deciding a wide-field imaging region on a sample imaged using a scanning charged-particle microscope, a local region deciding step of splitting the wide-field imaging region on the sample decided in the region deciding step into a plurality of local imaging regions and deciding the same, an adjustment point deciding step of deciding the layout of adjustment points corresponding to the respective local imaging regions for imaging each of the plurality of local imaging regions split and decided in the local region deciding step, and an imaging order deciding step of deciding the imaging order of the respective local imaging regions split and decided in the local region deciding step and the respective adjustment points, the layout of which is decided in the adjustment point deciding step, and creates the imaging sequence including the coordinates of the respective local imaging regions, the coordinates of the respective adjustment points and the imaging order of the respective local imaging regions and the respective adjustment points as an imaging recipe; an imaging process of sequentially imaging each of the plurality of local imaging regions on the sample using the scanning charged-particle microscope according to the imaging recipe created in the imaging recipe creating process; and a mosaic process of stitching together the local imaging region image group sequentially imaged in the imaging process by image processing, and generating a panorama image, wherein the image recipe creating process, in case of the layout of the adjustment points is decided in such a manner that the imaging region overlaps an optional local imaging region, in the imaging order deciding step, the imaging sequence is created as the imaging recipe in such a manner that while the respective local imaging regions except the local imaging regions corresponding to the overlapping adjustment point meet the condition that imaging at the respective local imaging regions is performed immediately after adjusting at the adjustment point for the respective local imaging regions, at the local imaging regions corresponding to the overlapping adjustment point, imaging is performed immediately after adjusting at the overlapping adjustment point after imaging the optional local imaging region.