This option is used to all align the images in a landmark. After alignment is complete you can then build a template (Find Template) and build topography (Find Heights).

Example Display:

Main Menu: Q 0123O IUCRSG NVAMBX DEPL FZH? 1
 >1                                                                               

 0. Auto align
 1. Individual shift
 2. Global shift
 3. Align with picture
 4. Align with gradient
 q. Quit

Example broken down:

0. Auto align - Aligns images to the template.

Auto align example:

    k     picnm            lambda      phi      cvg       nlmk  

    1   P3T11M2H0217        1.158     0.000     0.871     846
    2   P3T11M2H0218        1.138     0.000     0.871     857
    3   P3T11M2H0219        1.373     0.000     0.881     853
    4   P3T11M2H0220        1.063     0.000     0.881     871
    5   P3T11M2H0222        1.067     0.000     0.942     856
    6   P3T11M2H0223        1.378     0.000     1.000     858
    7   P3T11M2H0224        1.061     0.000     1.000     875
    8   P3T11M2H0225        1.166     0.000     0.928     848
    9   P3T11M2H0226        1.135     0.000     0.929     866
   10   P3T11M2H0227        1.105     0.000     0.850     854
   11   P3T11M2H0228        1.361     0.000     0.851     868
   12   P3T11M2H0229        1.091     0.000     0.965     849
   13   P3T11M2H0231        1.100     0.000     1.000     855
   14   P3T11M2H0232        1.348     0.000     1.000     872

 gc LMRK_DISPLAY0.pgm
 gc LMRK_DISPLAY1.pgm

 check display

 enter spacing

k - Image number

picnm - Image(picture) file name

lambda - ???

phi - ???

cvg - ???

nlmk - Number of landmarks that use this image (can also think of it as each landmark that has been added to the image)

enter spacing - Enter a number between 1 and 5. The lower the number, the fewer number of pixels LITHOS is allowed to shift the image. After entering this number, a display is output to the screen indicating the number of pixels moved in both x and y, and the new correlation factor for the new image location.

• new spacing? y[n] - Can choose a new number if you don't like the results. "Enter" will default to "no."

  • 0. continue. (default) - Continue with current positions. "Enter" will default to this selection.

  • 1. halve shifts. - only moved the image half the distance spacing calculated (can help with images that want to bounce between two locations)

  • 2. quarter shifts. - similar to above, but only shifts one quarter the distance.

    • Update landmark pixel locations? y[n] - "y" will save the new position and return to the Main Menu, "n" will discard the changes and return to the Main Menu. "Enter" will default to "n."

1. Individual shift - Shifts an individual image. First enter in the Image number (i.e. "k" value) that you want to shift, then the number of pixels to shift (first the x distance, followed by the y distance). Then you can enter in the next Image number (i.e. "k" value) and proceed as before. When you are finished with the individual shifts, enter "0" to quit to the Main Menu.

2. Global shift - Shifts all images the specified amount. Enter the x and y pixel shifts.

• Update vector? (y/n) - Not sure (I always just say "yes")

3. Align with picture - The user will select one image, and then SPC will align all the other images to it. Enter spacing as in "Option 0" above. This is used sometimes when auto-align isn't working and you don't want to align pictures by hand.

4. Align with gradient - Like auto-align (Option 0) except that it uses the gradients normal to the sun direction instead of the template. This would be used in the same situation as "Align with picture" and sometimes works better.

q. Quit - Quit to the Main Menu.