User manual
32
There are four calibration images in
the folder. Open the first calibration
image. A thumbnail appears in the
previously empty data slot and a new
empty slot appears. Repeat by
clicking on the empty slot and loading
the next image and continue until all
four images have been opened.
(Note: There is a shortcut to quickly
open all four image files
simultaneously. Right- click the “Film
calibration (mosaic)” heading and choose the first item “Open multiple images
from file”. Navigate to the folder, select and highlight the files and open them.)
After the images are loaded, the case tree
shows four thumbnail images. Further down
the branch is a thumbnail with the images
tiled into a mosaic. Click on the mosaic to
display it in the center window with ROIs
designated in the center of each image.
3. Enable the Selection Frame Tool, from the
Tool Bar located in the border to the left of image
panel. The “Selection Frame Tool” allows the
regions of interest (ROI) to be manipulated, i.e.
moved, sized or shaped. Be aware that in calibration you are defining the
average response of the film and the ROI should cover an area of at least 20
cm
2
. Adjust the sizes of the ROIs. (Hint: The exposed areas in the sample
images are 10 cm wide). Alternatively click the “Info” tab in the Film Evaluation
Panel to display a range of image data including size and position of the image
and ROI’s, the date/time the image was acquired, the scanner used, etc. Repeat
the ROI selection for each calibration strip.