Straighten & Crop
Images need to be adjusted so that the photo being worked on matches the structure's form. This usually means the photo is orientated orthogonal.(朝向正交)
Perspective, lens deformation and skew need to be removed using the relevant image editing software options.
Images shall then be cropped to incorporate the building from underside of eaves to where it meets the ground. (If basement façades are visible then the map shall include these)