How to Use Spy Glass in Correction Mode
Select Spy Glass from the toolbar.
Spy Glass superimposes the second image set in a frame over the first image set.
The window ① can be positioned anywhere over the underlying image.
Re-size or re-position to the desired area and adjust the shape by dragging the corners of the window.
Scroll through the image slices using the arrow buttons ③.
Zoom to your region of interest.
Analyze the deformation area by toggling and comparing the Original ② image set with the corrected one.
Review and accept the result if it is satisfactory.
Select Done when complete.
The corrected image set is saved for further processing.