|PanGazer – saving views|
PanGazer lets you save a view as an image file. To do this, select the Snapshot current view ... menu item from the View menu or from the pop-up menu (or press the ‘s’ key).
Unlike a screenshot, the saved view (snapshot) can include metadata such as the effective lens focal length of the image, the camera tilt (pitch), and the location and bearing of the view. See below and also the Image Geography page for details.
Similarly, since the saved image has this information if you then open it with PanGazer then any view of that image can also be saved and will also correctly propagate the metadata.
Therefore, a ‘flat’ saved view contains the necessary geometrical metadata so that (for example) moving the cursor over the image can show the bearing and tilt of the ‘camera’ at that point, and compass points and tilt angles can be overlaid on the image just as for the source image.
Views are saved as JPEG images so the focal length, location, tilt, bearing, etc. can be saved in the Exchangeable image file (Exif) metadata included with the image itself.
PanGazer currently saves a number of values calculated by PanGazer and also a small number of ‘well-known’ values copied from the source Exif metadata (if available).
Numerical values calculated by PanGazer when a view is saved (if available, these override values from the source image):
Numerical values copied from the source image (if available):
String values copied from the source image (if available):
Other metadata could be added to this list in the future; let me know if there is anything specific that you need.
|PanGazer and these web pages were written by Mike Cowlishaw; Please send me any corrections, suggestions, etc.|
All content Copyright © Mike Cowlishaw,
2014–2020, except where marked otherwise. All rights reserved.
The pages here, and the PanGazer program, are for non-commercial
This page was last updated on 2020-01-31 by mfc.