Registering Two-Pass Captures: 35mm Photometric Stereo to 100mm Macro Mosaic.

Planned sections

• The geometric problem — different focal lengths, same target.
• Why gantry encoder positions alone aren't enough for sub-pixel registration.
• Feature-based registration when SIFT actually does work (full-frame captures have features the macro tiles don't).
• Resampling the normal map up to mosaic resolution.