iWitnessPRO Photogrammetry Software

iWitnessPRO is is an affordable and automated close-range photogrammetry software system. iWitnessPRO allows the user to achieve accurate, fully automatic measurement of both targetless, and targeted feature points while retaining all the flexibility contained within the manual and operator assisted measurement functions of iWitness.

With iWitnessPRO, digital surface modeling (DSM) of thousands of points in hundreds of images can be processed on your PC in a short period of time. This leads to rapid, accurate and reliable 3D measurement results and it also provides the operator with the option to easily manually extract additional feature points of interest within the point cloud.

iWitnessPRO is capable of producing a DSM and exporting as an .LAS, .PLY mesh, and also an orthomosaic (orthoimage).

Depending on your project accuracy requirements from UAV missions, scaling can be achieved though ground control points, the drone’s GPS (EXIF) long/lat coordinates, or by the traditional referencing of 3D object points. Additionally, a DSM can also be generated from ground-based images for many applications, such as exemplar and crush vehicle modeling in accident reconstruction, facades in heritage recording and many other applications.

As with iWitness, iWitnessPRO can be used with any digital camera, or drone camera for UAS missions.

iWitnessPRO affords all of the functionality of iWitness. For the main differences between iWitness and iWitnessPRO, see the comparison page.

Coded Target Technology:

Supplied with iWitnessPRO are the optional re-usable red retroreflective coded targets. iWitnessPRO is also capable of measuring both Passive black on white, or white on black printed coded targets.  The coded targets can be distributed throughout the measurement volume whereas feature point targets, passive targets, and strip tape targets are optionally used to mark specific points of interest, which do not require referencing by the operator.

Coded targets 1 to 48:
iWitnessPRO comes complete with forty eight (hard backer) coded targets.  Additional Red Retro-reflective Code targets can be measured up to a quantity of 981 different “code nuggets”.

Project Accuracy:

The accuracy typically produced with iWitnessPRO, using red retro targets and a DSLR camera and a prime lens is 1:40,000 of the size of the object.

For Digital Surface Modeling from UAV/drones, measurement uncertainty is typically in the 1 to 3 cm range, depending on the flight, the specific UAV and photogrammetric scale.

Operating Requirements:
iWitnessPRO runs on 64-bit Microsoft Windows® 7 / 8 / 10 Operating Systems with a minimum 8Gb of RAM. 16Gb or more is recommended for Dense Surface Matching.