Multi-element tonal registration; Gregory Maxwell's viola set

1. Original frame (detail)

2. Supplemental frame (detail)

3. Rendered single-element tonal registration (detail)

ale --md 0 --ips 0 --dchain last:coarse:triangle:2 IMG_8975.JPG IMG_8983.JPG d.png
convert -crop 128x99+1121+945 d.png d-crop3.jpg

4. Rendered multi-element tonal registration (detail)

ale --dchain last:coarse:triangle:2 --ips 0 --ma-cert 0 IMG_8975.JPG IMG_8983.JPG r.png
convert -crop 128x99+1121+945 r.png r-crop3.jpg