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K2 - Photogrammetry PATB v3.6.278 Software
K2 - Photogrammetry PATB v3.6.278

K2 - Photogrammetry PATB v3.6.278

PATB is a program for block adjustment using the well-proven bundle method for highest accuracy specifications. Since it's initial public lauch in 1972, the program has been continuously further developed and upgraded according to the improvement of photogrammetric theory and the progress in new computer systems. Today, the actual version PATB-NT is one of the most advanced bundle block adjustment program worldwide. Highly optimized with regard to extreme numbers of observations and photographs, PATB shows stunning execution speed on Personal Computer systems. PATB-NT is about 3 times faster in execution than the preceding DOS version on the same computer system. Hundreds of companies and institutions confirm the intuitive self-explanatory user interface and economic program handling in daily practical work.

The calculation of all required initial values of the unknowns is done automatically from your data, without referring to preceding manual preparation. There are no restrictions concerning overlap, numbering systems, number of observations and block size. Self-calibration is used to correct simultaneously for systematic image errors. Different sets of orthogonal self-calibration parameters can be applied for the complete block or for groups of photographs to ensure an optimum accuracy. Automatic correction of earth curvature and refraction can be applied optionally. Automatic detection and elimination of blunders during the adjustment avoids tedious manual data cleaning. The method of robust estimators for data cleaning guaranties the detection of all possible data errors ranging from severe administrative numbering errors up to small measuring errors. Besides control point information, PATB allows the simultaneous adjustment of kinematic GPS observations with optional drift correction. The linear drift correction for the x, y and z co-ordinates of the GPS observations compensates for most of the errors caused by GPS drift, unavailable transformation parameters or transformation formula to your local terrain co-ordinate system, antenna offset, cycle slips and systematic errors of the perspective center co-ordinates. PATB also offers the possibility for rigorous error propagation and sophisticated statistical analysis based on the normal equation inverse. Geometrically weak areas in a network are then easily locatable. The standard deviations of the image orientation parameters and the final adjusted co-ordinates and their mean - and maximum values inform about accuracy and reliability of your AT block and its design. A graphical overview for the essential adjustment results provides an instant and thorough analysis of the adjustment results. These features of PATB ensure reliability and are the basis to achieve high accuracy specifications for a block adjustment even with minimum or no ground control points. PATB is the economic solution for your AT projects.

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