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Bundle Block Adjustments in the practical Close Range applications

Bundle Block Adjustments in the practical Close Range applications. Filippo Campolo Vincenzo Barrile University of Reggio Calabria Italy. Racurs Conference, Jurmala 2005. Why this test ?.

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Bundle Block Adjustments in the practical Close Range applications

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  1. Bundle Block Adjustments in the practical Close Range applications Filippo Campolo Vincenzo Barrile University of Reggio Calabria Italy Racurs Conference, Jurmala 2005

  2. Why this test ? Verify the results of four softwares mainly being used in Italian industry and targeting potential “PHOTOMOD” users, and to furnish useful suggestions to those peoples that operate in this sector. Verify if the results are suitable for monitoring architectural and monumental patrimony. Racurs Conference, Jurmala 2005

  3. Some typical objects of monitoring Castle of San Niceto, Motta San Giovanni, Italy Racurs Conference, Jurmala 2005

  4. Some typical objects of monitoring Villa Zerbi, Reggio Calabria, Italy Racurs Conference, Jurmala 2005

  5. Variety of softwares Commercial Academic Only for the research For development Expensive Cheap Racurs Conference, Jurmala 2005

  6. What of this software companies like to buy ? Mainly multifunction (total solution) Aerial-photogrammetry and Close Range Racurs Conference, Jurmala 2005

  7. Softwares tested • Socet Setby LH-Systems • Bluhby Hannover University • Visual Giantby ElaSoft • PHOTOMODby Racurs Latest versions Racurs Conference, Jurmala 2005

  8. First object for test : Altar Gold altar of Sant’Ambrogio in Milano Racurs Conference, Jurmala 2005

  9. Second object for test : Façade Church of San Benedetto in Catania Racurs Conference, Jurmala 2005

  10. Used equipments • Theodolite Wild T3000 (0.1” angular) • Distomat Di3002 (1 mm) • Metric camera by Zeiss (9x13 cm) • Vexcel Scanner (Scan 5 micron) Racurs Conference, Jurmala 2005

  11. Scheme of stripswith allpoints Racurs Conference, Jurmala 2005

  12. Tie points measured Racurs Conference, Jurmala 2005

  13. Control points marked and measured Racurs Conference, Jurmala 2005

  14. Check points measured Racurs Conference, Jurmala 2005

  15. Results of the test on the control points Racurs Conference, Jurmala 2005

  16. Results on the control points from Socet Set Racurs Conference, Jurmala 2005

  17. Results on the control points fromBluh Racurs Conference, Jurmala 2005

  18. Results on the control points fromVisual Giant Racurs Conference, Jurmala 2005

  19. Results on the control points fromPHOTOMOD Racurs Conference, Jurmala 2005

  20. Results the test on the check points Racurs Conference, Jurmala 2005

  21. Differences check points: Socet Set Racurs Conference, Jurmala 2005

  22. Differences check points: Bluh Racurs Conference, Jurmala 2005

  23. Differences check points: Visual Giant Racurs Conference, Jurmala 2005

  24. Differences check points: PHOTOMOD Racurs Conference, Jurmala 2005

  25. Conclusion • A block adjustment is never perfect. • If the adjustment residual errors exceed the tolerance, a great deal of imagination is required to visualize the source of the problem from error values, which only describe the deformation in numerical terms. • After analyzing the errors, the photogrammetrist will often revisit the point marking or mensuration process, and then discard or statistically weight certain points and re-process the data to obtain a better adjustment. Racurs Conference, Jurmala 2005

  26. Modern bundle block adjustment programs also directly output model parameter, including control and image points’ ground coordinates, residual errors in the original measurements and the adjustment, and all-important bundle parameters ( Xo, Yo, Zo, Omega, Phi, Kappa), which define location and attitude of each aerial and close range photograph. • For that it is impossible to say which is the best: Socet Set Bluh Visual Giant PHOTOMOD ALL GIVE GOOD RESULTS IN THE BUNDLE BOCK ADJUSTMENT Racurs Conference, Jurmala 2005

  27. WHICH ONE IS THE BEST OUT OF THE FOUR? Our opinion is that the results coming from “PHOTOMOD” are very good, and it is very interesting software to be used in close range applications. IT IS FOR YOU TO CHOOSE Racurs Conference, Jurmala 2005

  28. Thanks for attentionand arrivederci Filippo Campolo and Vincenzo Barrile University of Reggio Calabria Italy Racurs Conference, Jurmala 2005

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