New and changed features:



There are now three options for Google Earth Pro calibration including lat/lon points, no points and multiple calibration points.  



All references to the Google Earth Plugin have been removed since it no longer works.  Please install Google Earth Pro and follow the suggestions in Help. 



A function has been added to extract field and road boundaries from images.  A black and white line drawing which resembles a map is produced without intervention from a colour or grayscale original. The calibration of the original may be used. The function can be activated on an open image either from the Calibration menu or from a grid-symbol tool button on the main toolbar with a single mouse click.



In selection for orthophoto production, directory names with blank spaces  and some forbidden ASCII characters like apostrophies could not be processed by the external programmes used,  This problem is now detected and when present, an option offered to create and copy image data to directories without blank spaces for furtjer processing..


Bug fix:

When a Google Earth/Pro image  was calibrated with EPSG coordinates, these were not shown immediately after a conversion had been made.  Fixed.



A small set of additional image treatment options has been added interactive quick modifications.


Since 2006, AirPhoto and its successor AirPhotoSE have offered extended options for using Google Earth.  Internally, these used the Google Earth Plugin, a separate programme for external control of Google Earth which was installed automatically by Google.  From December 15, 2015 Google cancelled support for the Plugin which will no longer run at some time in the near future in recent Windows versions.  

Only Google's limited implementation of the Keyhole Markup Language is now available.  This language contains a subset of commands to be given to the Google Earth program, but no feedback from the Google server returns data needed for functionality needed the automatic calibration and georeferencing of a Google Earth image which was previously available.

The Google Earth Plugin may continue to work on some machines for an unspecified time. Use it in preference to Google Earth Pro if it works, since it requires less manual intervention.

Google Earth Pro which previously required an annual payment to Google is now available without charge. See the instructions in the Help in the topic Google Earth on how to download, install and configure it.  It offers options for higher resolution images than those available with the standard version of Google Earth and without Google advertising labels, but images  can only be saved from within Google Earth Pro or with an external screen capture program or operating system option.  Modest interaction via the Clipboard has been incorporated in AirPhotoSE to permit transfer of filenames to Google Earth or Google Earth Pro.  Both versions may be installed, but only Google Earth Pro will be used from inside AirPhotoSE if it is available. 



Many external programmes used by AirPhotoSE fail if  blank spaces in file names passed to them are encountered.  Additionally, if the user created a folder with blank spaces in it's name for images, this also caused failure when fully qualified path names for images were passed to an external programme..
For example, VLfeat detects keypoints in images for orthophoto generation.   New versions of VLfeat for 64 and 32 bit systems have replaced older versions, but because it is also written for Linux/Unix, blank spaces in names are still forbidden.

Blank spaces in file or directory names are now filled automatically with the underscore character _  Previous versions of AirPhotoSE required removing all blank spaces in names manually with the Explorer or in a command line window.


Bug fix:

On fast machines with solid state disks (SSD), the measurement method for calibrated images did not locate the measurement points quickly enough when the mouse was clicked and measurement failed.  Fixed.



Microsoft's Image Compositing Editor has been used in AirPhotoSE for several years for stitching orthophotos. A new version 2 has been issued by Microsoft Research after 4 years in 2015.  The internal interface for running it from AirPhotoSE had to be modified to utilize the different options for installation offered by Microsoft.  At this time however, many users of AirPhotoSE may continue to use the older 2011 version.  AirphotoSE has now been modified to detect the version installed and take appropriate action so that the differing installation modes do not prevent finding the executable and spawning it.  The images in this help are from the earlier version.  These will be modified later.


Bug fix:

The undo option did not work consistently when Transform and Scale, Clone and Transform or Total Station Transform were chosen.  Fixed. 


Bug fix:

On some fast new machines with many processors, timing problems interfered with some of the options for Google Earth, namely TestCoordinates, Find in Grid, and Find with GPS information.  Fixed.



Autocontrast and brightness enhancement are now applied to the thumbnails for the images chosen in the Orthophto option so that visibility especially in underexposed UAV pictures is improved.


An improved detection technique for the installation of Microsoft's Image Compositing Editor now also finds it when it is not installed in the default program directory on the C: drive even when the machine has a 64 bit version of Windows running.



A stricter check on image and folder names containing blank spaces or longer than 255 characters has been added to protect spawned external programmes which may operate incorrectly or crash when the Orthophoto option is chosen.



A new revision of Cloud Compare with bug fixes and new features replaces the older version previously used.


Bug fixes:

A bug was introduced in version 2.48 which disabled simple transformation to a white or black background.  Fixed.

The message: "Transformation calculation failed or reset error" sometimes appeared  when in fact there was no error. Fixed.

When a second large image was loaded after a first large image was already displayed, the second image sometimes replaced the first and a blank window was shown where the second should have been.  Fixed.

If a calibrated (georeferenced) image was aligned to a selected grid and then saved with a new name, no calibration file was written and re-opening the image did not show the grid coordinates.  Fixed.


Bug fixes:

A timing problem affects some Windows 8 machines when Google Earth is being used from within AirPhotoSE.  No data was visible in a saved output file.  Fixed.

The Altitude slider in the Find in Grid was not visible.  Fixed.


The state of the Find in Grid dialogue box is now recorded to the current user's registry and restored when the programme restarts.


Bug fix in Enhancement options. 


Bug fixes in the Google Earth "Find by Name" option using Google Maps..

A major revision of Cloud Compare with bug fixes and new features has been integrated into AirPhotoSE.For technical details at the programme development level, see:



On November 19, 2013, Google withdrew support for Google Maps version 2 which was used for Find by Name searches in AirPhotoSE.  The Google Earth placename search code has now been updated to use Google Maps version 3 and to display an area of interest in a separate Google Maps window.  See Google Earth Find a Placename with Google Maps



Local image stretching using affine triangulation has been added as a transformation option. This option is suitable for geometric correction of old maps relative to modern ones or for rectifying scanned paper copies of vertical or oblique images with distortion that can not be modelled mathematically.


A new revision of Cloud Compare with bug fixes and new features replaces the older version previously used.



The polygon crop selection option now permits cropping to an irregular area as well as to the lines between the polygon nodes simply by holding down the left mouse button when tracing the polygon.  Data from different years in Google Earth can be activated from AirPhotoSE and selected with the Time Line option, then cropped and inserted into another Google Earth image of differing date using the layer function and passed on to a GIS if the appropriate calibration and GIS world file choices are made first.  See Google Earth: Combining Multiple year captures



GeoPortal Data: Zooming, Spawning of the Internet Explorer

Some GeoPortal sites show a map or orthophoto window which covers only a small part of the display.  These can now be expanded by as much as 400% without loss of resolution for large images.  

Other GeoPortal sites use code which can not be handled by the emulated Web Browser in AirPhotoSE.  For these sites, a separate version of the latest installed version of the  Internet Explorer can now be spawned from the GeoPortal page.



Layers: Multiple images with automatic calibration:

When improving accuracy of calibration of Google Earth images, it may be necessary to extend the area covered by the calibration for points which are distant from a known point.  Multiple Google Earth captures around and partly overlapping the known point can be layered and the calibration from the known point transferred automatically to all areas of the larger combined image.  See the topic Multiple Images at the bottom of the link above.  

This option can be opened from the main toolbar icon or with the hot key combination Ctrl+O+Shift.



Projection and interpolation choices in Options setup

Negative to positive images or the reverse 

Distance, perimeter and area measurement in calibrated images

Air navigation beacons (Navaids) for known geographic coordinates

Google Earth: Improving Accuracy


An option for opening multiple images (more than two) has been added to the File Menu, Open Multiple (shortcut key Ctrl-Alt-O). After the image selection dialogue box appears, hold down the Ctrl key and select the images to be opened with the left mouse button. The source and target images must be selected using the new Source/Target option on the main menu. This multiple image file option is available only if no images have already been opened.  For details click on the link above and go to the bottom of the page to the Multiple Files topic.