Airborne Digital Camera Calibration and Certification ASPRS Ottawa presented by Eric Liberty
Digital Sensor System (DSS) 422/439 • Electronics • Digital Back, CCD • Mechanics • Camera Body, Shutter • Optics • Customized Lens, filters, Stable Mount
Camera Metric Stability? Metric implies that the system is calibrated for interior orientation and remains STABLE over time • Principle Point • Lens Distortion • Focal Length + Shock & Vibe and Pressure Tested= Mapping Grade Camera VS Self Calibration method using AT to determine interior orientation using tie -points and Ground Control
Camera test labs and manufacturing facilities Applanix Camera Manufacturing Lab Precision CNC Machine Reasons: • • Shorten manufacturing time via improved tooling • Terrestrial Camera Calibration Cage Improve overall quality and re-duce rework time via improved tooling Shorten turn-around times on recalibrations for the yearly maintenance
Tru. Spectrum™ Technology • Providing unparalleled Radiometric Accuracy for: • Standard mapping applications requiring true color representation • CIR (color infrared) remote sensing applications utilizing false-color imagery Feature Function Benefit Tru. Spectrum Image Chain Analysis for Color and Colour Infra Red (CIR) Imagery Individual components of the imaging process are modeled in order to understand how changes in the chain may affect image quality Seamless Mosaics for better product delivery in remote sensing and digital mapping applications
Adjusting the digital back Determine tilt with optical microscope Digital Back Adapter is machined to correct
Focus Adjustment using a collimator for … - system focus adjustment - determination of focus gradient
DSS Terrestrial Calibration • Applanix Proprietary Software • Calibration Parameters • • Focal Length Radial and Tangential Distortion Principal Point Location Initial Boresight Alignment
DSS Workflow: Airborne Calibration and QC Cal. QC is KEY: Boresight Calibration, QA/QC Cal. QC is RIGOROUS and the BEST COMMERCIAL BORESIGHT CALIBRATION SOFTWARE!
All DSS specs are qualified by USGS Certification Currently working towards certifying system within international mapping authorities
Скачать презентацию Airborne Digital Camera Calibration and Certification ASPRS Ottawa
4778732b3fb7083f57c2cc6707aa8e0f.ppt