Products

Correlator3D™ Software

Correlator3D™ is an ultra-rapid software solution for the generation of high-quality geospatial data from imagery. Designed for speed and ease of use, Correlator3D™ automatically produces digital surface models (DSM), digital terrain models (DTM), orthophotos, mosaics and 3D change maps at a fraction of the cost and time of currently available tools. Highly-trained personnel are no longer needed.

Benefits

Ultra-rapid geospatial data generation
User friendly and intuitive usability
Accelerated project completion time
No manual editing, leading to cost predictability
Enhanced capability for operational tasks

Processing Modules

EXTERIOR ORIENTATION REFINEMENT
- Fully automated process eliminating the need for traditional aerial triangulation (AT)
- No user interaction required at any step during processing
- Highly robust selection of image tie points and control points
- Ground control points (GCP) can be imported to ensure absolute accuracy
- Direct support of pre-processed GPS/IMU information
- Statistics on the quality of results automatically generated

DSM GENERATION
- Extremely high resolution/quality digital surface models (DSM) generated from stereo imagery
- Patent-pending technology based on advanced computer vision algorithms utilizing 3D graphics cards to accelerate processing
- Images are processed on a pair-by-pair basis significantly reducing memory/system requirements and eliminating project size constraints
- DSM results from individual image pairs are automatically merged to improve overall data quality and allow parallel processing on multiple PCs
- 3D constraints (e.g. points, vectors and polygons) can be imported as Shapefiles or DGN files to force particular elevation values in final DSMs such as water bodies (optional input)
- Results are outputted in standard formats (e.g. GeoTIFF, ASCII Grid) with accuracy statements

DTM EXTRACTION
- Automatic filtering of DSMs to extract digital terrain models (DTM)
- Unique algorithms that identify 3D features, remove associated elevation points and interpolate from neighboring regions for filling removed areas
- Capability to export DSM features removed during DTM extraction
- Users only required to set a single parameter value corresponding to the largest features (horizontally) to be removed from the input DSM
- 3D constraints (e.g. points, vectors and polygons) can be imported as Shapefiles or DGN to force particular elevation values in the final DTM

ORTHORECTIFICATION
- Very fast production of individual orthorectified images
- When used in conjunction with other Correlator3D™ modules, horizontal accuracies of final orthophotos are of less than a pixel
- Results outputted in standard formats including GeoTIFF and TIFF World Format (TFW)

MOSAIC CREATION
- Fully automated merging of individual orthorectified images for the generation of mosaics
- Final mosaics featuring smooth and seamless transitions between adjacent images
- Based on advanced algorithms for local intensity adjustments and automatic generation of seamlines
- Color balancing option that includes brightness / contrast adjustments of each image, inter-image equalization, independent channel analysis for hue equalization and photometric constraints to maintain global information of brightness, contrast and hue
- Capability for automatic tiling or for importing tile definition files

DEM EDITING
- Features powerful monoscopic editing functions to alter DEMs according to specific user requirements
- Provides highly intuitive user interface to visually interact with elevation data and specify polygonal selections
- Supports several operations including crop/delete, set/offset elevation values and filter regions
- Advanced “Delete and Fill” function for deleting elevation points and filling resulting gaps
- Touch-up tool for very fast improvement of small areas

3D CHANGE DETECTION
- Based on a robust approach that compares DEMs instead of images
- Performs a comparative analysis and determines the importance of changes in 3D
- Results outputted as a DEM corresponding to the differences in elevation between the two input DEMs
- Capability to display detected changes as color information superimposed on a mosaic of orthophotos

Additionnal tools

SCRIPT MODE
- Batch processing facility for advanced users desiring to fully automate their processing tasks
- Only requires a simple text file as input, containing a series of instructions that the software executes sequentially

DEM MERGING
- Allows combining DSM or DTM results that were created separately
- Essential for users who wish to process a project in multiple parts (e.g. at different times or in parallel on multiple machines)

DATA VALIDATION
- Useful for a quick verification of input data or to assess the overall quality of a dataset

FIDUCIAL DETECTION
- Automatic tool for detecting fiducials in traditional scanned films
- Quickly extracts the position of marks, which are necessary for film processing

DEM VISUALIZATION & PROFILES
- Highly intuitive tool to visualize DEMs, including real-time zooming and panning capabilities
- Features different visualization modes and styles such as color / greyscale, DEM shading and color stretching
- Includes a profile tool for generating and exporting vertical profiles of DEMs over user-specified paths