Align tab
This tab is accessible only while in image mode. It is used to control the
alignment process :
- The "x" an "y" numeric fields set the origin (in pixels unit) of the
align square (0,0 is at the bottom left corner).
The square position can also be (and usually is) changed by dragging
it in the image frame.
By holding the option key while finishing the drag, the square
position is set only for the highlighted entry in the list frame.
For best results : on images of the moon, frame a conspiscuous
detail ; on planets images, frame the entire planet.
- The "side" button menu sets the align square side, this side is a
power of two, not larger than the lower side of all the images and
movies in the list.
- The "Ref" checkbox sets the highlighted entry in the list frame to
be the reference image ; that is the image against which all
others will be aligned. The default reference image is the first
image of the list.
- The "Align" button starts to align each image selected for
processing (ie: with a checkmark).
Once started, it is impossible to select another tab and the "Align"
button becomes a "Stop" button (you guess what it does ;o).
When this tab is selected, the image frame displays the image of the
highlighted line in the list frame. The align square is drawn as a red
square on this image.
The left and right arrow keys, delete, backspace, space and return keys
act as in the list tab.
During alignment process, each processed image is :
- highlighted in the list frame,
- its name displayed green if alignment is successful,
- its ∂x and ∂y columns updated,
- displayed with its alignment offset corrected, in the image
frame.
This last feature can be disabled in user preferences, to speed up
the alignment.
Analyze tab ...