Alignment
This image shows the 1st frame of a 300 frame sequence we will
process
After pressing Set Alignpoints this set of Alignpoints is shown, we
will now proceed with alignment.
After
alignment you can use the new option called "Show aligndata". This will
show you how the alignment for each alignpoint has worked. The
alignpoints are shown by the red circles, the blue circle (right top in
this case) corresponds to alignpoint #1.
You can see that
the red circles differ in size, if you look carefully you can see that
some areas have larger circles in general then others. The size of the
circle informs you about the average amount of shift for each
alignpoint. When alignpoints show a lot more movement - compared to all
other alignpoints - the circle will be larger. The yellow lines
originating inside the circles show for each frame that was aligned the
direction and size of the shift. This shift is - for display purposes -
5x enlarged than in reality, so often you are looking at shifts of a
few pixels at a time. In this example especially the area on the
lowerleft seems to move different during alignment. This is not
necessary a case to worry about. But if you see very large spikes in
one or more alignpoints it could be wise to align once more but remove
those alignpoints before alignment.
New
in RegiStax 6 is also that when you have checkmarked "Show aligndata"
you can inspect the aligmentdata for each frame. This image and the one
further down show the type of information you can get. The yellow box
is the area that is present on all frames, the alignpoints are shown
using yellow circles and the green lines show the size (5x enlarge) and
direction of the movement of the alignpoint.
In this image you can see
stretching due to seeing of the image
happening, the alignpoints on the left-top move far less than the
alignpoints on the lower-right.
This
image was seen as the worst in this test sequence, its not only blurred
but the movements of the alignpoints are also into many directions.