10-13-2022, 12:05 PM
(10-13-2022, 10:42 AM)phipeco Wrote: Thank you guys very much! Thats indeed the kind of tool I was looking for.
The only thing is my files only fit roughly (digitalized old maps), so with only two points and scaling the result is sadly rather insufficient, especially after stitching a few dozen together. Is there maybe a similiar tool somewhere out there that can, lets say, align likte 20 or 30 pairs of points and doesn't scale but only moves and rotates? So that the points are only approximately aligned but the overall picture gets preserved?
You can use the Unified Transform tool:
- It is often useful to set the top image to Difference mode, this makes the features stand out in the overlap area
- Start the Unified transform, with:Show image > Composited preview set
- Using the Move mode (click somewhere in the middle), align a point of the top layer over the same point in the lower layer
- Drag the pivot of the transform (crosshair circle) to that point
- Rotate the top layer around the pivot (drag outside the UT frame) until everything matches (which is when the overlappping part become as dark as possible)
- Reset the top layer to Normal mode.
(*) In the general case, this method works with rotate and scale, that are best done in one operation (less blur). And the UT is mandatory in this case since you want the scaling to be done around the same pivot as the rotation, while the Scale tool doesn't let you change the scale origin (beyond corner/center.