On Wed 18-Apr-2012 at 08:54 -0700, George R wrote:
Does a point with a high distance, that is known to be an optically-accurate-match, reflect camera movement away from the pivotal point?
Yes, parallax problems show up on objects near to the camera, such as the ground. If you only pick points on objects that are a very long way away then you get tiny distance errors for the points, but nearby objects can still be 'chopped' when stitching.
If the distant objects are irregular then you can sometimes use just nearby objects for control points and get a cleaner stitch with less noticeable errors.
Otherwise you can use masks to control the seam placement for the near objects, or fiddle with the errors afterwards in an image editor.
Optimising d,e translation might work and usually gives a lower error number, but I'm not convinced it delivers better pictures.
If the ground is flat, then you could use XYZ parameters to stitch the ground separately from the rest of the scene.
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