In general, our focus in on the relative position of the landmarks to the image, but there are other factors:
- WB: body -- The solution controlled by the connection between images and the landmark.
- WO: overlaps -- The position is impacted by the overlapping landmarks
- WL: limbs -- The solution controlled by the limb data (for images that have limbs, the position of the landmarks gives a strong constraint on where the spacecraft can be).
- WR: reference. It will use the existing shape model as a reference. This ensures it doesn't deviation too far from the existing solution.
INIT_LITHOS.TXT contains the variable LMKWTS. Normally the value is one, meaning no extra weighting is use beyond the default values in SPC. However, if you want to increase (or decrease) the impact that one of these constrains have, you can increase (or decrease) the number in PICWTS. Note: The values undergo a square root, so if you want to enhance the power of something by 10, the number needs to be 100.
LMKWTS= 1, 0, 1, 0 WB, WO, WL, WR