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''' 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. ''' 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. Like option 3, this will "turn off" all images that are not the selected image, and they will have to be added back before building a template.

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 - See Find template

phi - See Find template

cvg - Coverage; fraction of image that is found in the landmark.

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 with positive moving to the right, followed by the y distance with positive moving down). 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. This doesn't always work because of differing illumination conditions. Not that this will move the reference image to position #1, and will flag or "turn off" all the other images. You will need to perform a 0-a from the Main Menu to add them all back.

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. Like option 3, this will "turn off" all images that are not the selected image, and they will have to be added back before building a template.

q. Quit - Quit to the Main Menu.

Typical Example

Screen output from entering

  • 1
  • 0
  • 1
  • n
  • 0
  • y 

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
0
 0


    k     picnm            lambda      phi      cvg       nlmk  

    1   P3T11L2H0201        1.158     0.000     0.881      96
    2   P3T11L2H0202        1.155     0.000     0.877      96
    3   P3T11L2H0203        1.354     0.000     0.879      94
    4   P3T11L2H0204        1.072     0.000     0.879      96
    5   P3T11L2H0206        1.057     0.000     0.945      97
    6   P3T11L2H0207        1.351     0.000     1.000      95
    7   P3T11L2H0208        1.070     0.000     1.000      97
    8   P3T11L2H0209        1.159     0.000     0.934      96
    9   P3T11L2H0210        1.161     0.000     0.934      97
   10   P3T11L2H0211        1.084     0.000     0.853      96
   11   P3T11L2H0212        1.355     0.000     0.853      94
   12   P3T11L2H0213        1.070     0.000     0.955      96
   13   P3T11L2H0215        1.082     0.000     1.000      96
   14   P3T11L2H0216        1.355     0.000     1.000      93

 gc LMRK_DISPLAY0.pgm
 gc LMRK_DISPLAY1.pgm

 check display

 enter spacing
1
 1           
   1   P3T11L2H0201        0.028     0.029     0.968 +++++
   2   P3T11L2H0202       -0.048     0.026     0.941 +++++
   3   P3T11L2H0203        0.038     0.026     0.909 +++++
   4   P3T11L2H0204       -0.051     0.011     0.955 +++++
   5   P3T11L2H0206       -0.053     0.003     0.961 +++++
   6   P3T11L2H0207        0.031    -0.020     0.930 +++++
   7   P3T11L2H0208       -0.054    -0.006     0.957 +++++
   8   P3T11L2H0209        0.030    -0.010     0.971 +++++
   9   P3T11L2H0210       -0.052    -0.017     0.947 +++++
  10   P3T11L2H0211        0.029     0.001     0.977 +++++
  11   P3T11L2H0212       -0.051    -0.023     0.910 +++++
  12   P3T11L2H0213        0.030     0.007     0.974 +++++
  13   P3T11L2H0215        0.028     0.015     0.974 +++++
  14   P3T11L2H0216       -0.047     0.021     0.878 +++++
     0.041     0.017

 new spacing? y[n]
n

 0.  continue. (default)
 1.  halve shifts. 
 2.  quarter shifts. 
0
 0

 Update landmark pixel locations? y[n]
y
 y

 Current landmark = EE0001
SCALE =  0.000100 QSZ =   49
 Lat/Lon/Rad =     -6.800   264.090     0.266
 Region = EE

 gc LMRK_DISPLAY0.pgm
 gc LMRK_DISPLAY1.pgm


 check display
Main Menu: Q 0123O IUCRSG NVAMBX DEPL FZH?

Align landmarks (last edited 2016-07-24 17:06:42 by BMittan)