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MOJAVE™ GEO100M High Speed Othorectification Workstation

The Mojave^TMGeo100M

Orthorectification

Removing Distortion, Adding Value

Columbus was right: the world is not flat. In fact, it’s not even round. Consequently all images taken of it suffer from perspective and terrain distortion and thus cannot be easily or cleanly fused to one another or to maps. Orthorectification converts each image from its natural perspective to a common ideal perspective and in so doing offers many advantages

Perspective and terrain distortion is removed.
Overlapping images can be seamlessly mosaiced together.

Accurate geolocation information can be read out directly out directly from the image.

Images can be overlaid on maps.
Automatic change or motion detection is possible

Not A Trivial Process

Orthorectification is very computation intensive. Even with the latest CPUs orthorectification of a single high-resolution image can require hours to perform. Camera resolutions and frame rates are increasing, putting even more strain on an already slow process.

The Cardio Logic Mojave^TM Geo100M Workstation orthorectifies QuickBird and OrbView imagery 10 times faster than the best commercially available software. It supports the incorporation of ground control points (GCPs) for improved geolocation accuracy, terrain model management and batch processing mass production of orthorectified images in NITF or GeoTIFF format.

Speed

The Mojave^TM Geo100M processes images 10 to 30 times faster than other commercially available software. Shown below are the times required to orthorectify a 1.6 GB image (27552 x 30564 x 16 bits) on a 3.2 GHz Intel Xeo CPU

Tool	Supplier	Time(mins)	Pixel Rate(Mpps)
ENVI^tm ^4.1	RSI	159	0.088
Mojave^tm ^3.1	CLI	32	0.439
Mojave^tm Geo100M	CLI	4.56	3.073

The Mojave^TM graphical user interface features the ultimate in simplicity: a selected image can be orthorectified with one mouse click since all requisite parameter fields are automatically assigned default values, allowing operators to become productive with little or no training.

The Mojave^TM Geo100M bundles Cardio Logic’s software with hardware acceleration for super-computer performance in a turnkey system occupying only 4U of rack space. No installation of software or hardware is required.

The Mojave^TM Geo100M orthorectifies each image based on a plain text parameter settings file that may be created using the Graphical User Interface (GUI) or by other means. Settings files may be created and saved for unattended batch processing.

The Mojave^TM Geo100M can automatically search a terrain model library and retrieve and assemble the appropriate terrain model files for each image.

Direct reading of ground control point coordinates and reference image pathnames from text files is supported. Reference images are automatically displayed along with image to be orthorectified.

Accuracy has been reviewed by Digital Globe and found to be comparable to their processes.