Relates a scan to the tracker bar it was read with.
Scanning software numbers the hole columns it finds by their position
in the image, so its numbering is offset by however far the roll lay
from the edge of the scanner bed. Calibrating means finding that offset,
usually from a landmark such as the rewind perforation.
Relates a scan to the tracker bar it was read with.
Scanning software numbers the hole columns it finds by their position in the image, so its numbering is offset by however far the roll lay from the edge of the scanner bed. Calibrating means finding that offset, usually from a landmark such as the rewind perforation.