Trouble
report 583
Cropping a panorama from swing lens
images hangs with infinite alert panel
Versions affected
4.0 - 4.2
Description
When you apply the Crop command to a stitched image that is made with
the Swing lens camera setting, you get the red cropping rectangle
displayed on the stitched image. When you click the Approve button
on the Crop image dialog box, the program displays an alert panel telling
you to enter a value between 1 and 360 for the field of view.
When you enter a value into one of the text boxes, you receive another alert panel before you can enter a value into the second
text box. To get out of the alert panel, you must
terminate the program using Windows Task Manager.
Discussion
This happens because the stitched image is marked as a panorama, but
The Panorama Factory doesn't know the field of view (HFOV and VFOV) of the
picture. When you stitch conventional images, the HFOV and VFOV are
computed as part of the focal length detection process. But this process
is skipped for swing lens photos.
Display of HFOV and VFOV was added to the Crop image dialog box in V4.
These values are blank after stitching with the Swing lens camera setting
and this causes the infinite alert problem.
Workaround
To workaround this problem, you must manually
set the FOV before cropping. After stitching, right-click the stitched
image and choose "Panoramic properties" from the popup menu (or select the
command from the Image menu when the stitched image displayed in the large
window). You should see that "This is a panoramic image" and "Cylindrical
projection" are both selected but disabled. HFOV and VFOV are both blank.
Enter a number into the HFOV. Apply the Crop command after entering
the HFOV.
Status
Corrected in V4.3. V4.3 requests the HFOV of your
swing lens photos and uses that information to determine the HFOV and VFOV
of the stitched image..
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