ASPRS 2008 Airborne Digital Mapping Camera Systems: A Manufacturers’ Perspective Ruedi Wagner, ADS Product Manager Portland, 1st May 2008

„Perspective“ „The faculty of seeing all the relevant data in a meaningful relationship.“

What is „relevant“ to the Customer in aerial digital mapping? Consistent Technical Performance? Data Acquisition Efficiency? Data Processing Efficiency?

Consistent Technical Performance Resolution/GSD [IN ALL BANDS!!!!!] Geometric Stability = Geometric Accuracy [SUBPIXEL] + = Telecentric Lens Equal Resolution Co-registered in all bands Tetrachroid NO PAN-SHARPENING

ADS40 2nd Generation Highest Quality at Engineering Accuracy [5cm GSD image]

Consistent Technical Performance Radiometric Calibration/Performance „For automated classification, the ADS40 SH52 shows by far the best accuracy.“ [Kass Green, ASPRS 2008] Stereo Capability in all five bands (SH52) Flexibility in SH51 & 52

Radiometrically Calibrated Image Data in Full Stereo Sample images RGB & NIR (Wörthsee)

Data Acquisition Efficiency Expanding the Operational Envelope 72,000 lx 36,000 lx 18,000 lx 18,000 lx Target: Image data with full dynamic range.

Data Processing Efficiency Digital workflow = analog workflow Flight 2,400 km2, 20cm GSD 30 lines, each 40 km, 3 Pan and 4 MS Approximately 8 h flight at 130 knots Total time User action time Workstations single eight Download 230 GB ADS data format = 940 GB image data 4 h 4 h 0.5 h Geo- referencing Trajectory calculation geo-referencing of L0 images 2 h 2 h 1.5 h 0.5 h Aerial triangulation Automatic Point Measurement Bundle Adjustment 8 h 12 h 3 h 12 h 0.5 h 5 h Ortho photo RGB or FCIR 2,400 km2 (927 sq.mi) 44 h 6 h 1.5 h 72 h 29 h 9.5 h Due to image strips slightly faster than in traditional workflow Feature extraction Fly-through Similar to traditional workflow

√ √ √ = Bringing Value to the Customer Conclusion Technical Performance? Data Acquisition Efficiency? Data Processing Efficiency? = Bringing Value to the Customer √ √ Is this meaningful to you? Is this a perspective you can share with us?

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