U.S. Department of the Interior U.S. Geological Survey Intergraph DOT Meeting ASPRS 2006 Annual Conference Reno, Nevada In-Situ Calibration Challenge to State DOTs

2 George Lee,Photogrammetrist Cartographer DOQ Program Manager Expert Marksman Ham Radio Operator Photographer Weight lifer Dinner Speaker (NOT!) Introduction

3 Short beginning Shorter ending Leave out most of the middle Guideline for Dinner Speakers

4 DOTs are special Traditional methods and new technologies I need your help Why you?

5 Why does the USGS care about calibration? Photogrammetric methods for map generation Map production primarily done in-house Quality assurance measure for aerial photography from aerial contractors Background

6 USGS Camera Calibration History USGS responsible for calibration services for film camera in United States since 1973 USGS operates Optical Sciences Lab (OSL) in Reston, VA with a custom-built calibration instrument Current policy requires current (within 3 years) camera calibration report on file before award of contract The “Catch-22” problem for digital sensors

7 Multiple types of digital sensors Integrated with other technologies Need for system calibration Other types of sensor systems Varied geospatial data and not just topo maps All production performed by Data Providers Federal, State and local agencies providing geospatial data through their own contracts Quality assurance for The National Map The New World

8 Continue to provide analog calibration services Develop and implement digital calibration capabilities Develop standards for camera and sensor calibrations Develop and implement in-situ calibration methods ASPRS Study and Recommendations

9 Research grant to The Ohio State University Established Madison Test Calibration Range with cooperation of Ohio DOT Initial in-situ calibration software delivered to USGS Testing methodology with Madison and other ranges In-Situ Calibration

10 MADISON CALIBRATION RANGE

11 MADISON HIGH DENSITY RANGE

12 USGS Plan for Quality Assurance Four major parts covering two major processes:  Data Production: Manufacturers Certification Data Providers (flyers) Certification  Data Purchasing & Acceptance Contracting Guidelines Data Acceptance Standards

13 The USGS Plan Data Procurement: Contracting Guidelines & Boilerplate Tool Data Users and Inspectors: Acceptance Standards Sensor Manufacturers: Manufacturers Certification Data Providers: Data Providers Certification User Needs Data Procurement Domain Data Generation Domain Final Product

14 Manufacturers factory calibration parameters used Data Provider in-situ calibration for corrections Data Provider monitoring and “best practices” to ensure metric quality of system What does this mean for digital sensors

15 In-situ calibration Product characterization The Only Reasonable Solution

16 To change calibration policy for analog cameras Provide in-situ as well as laboratory calibration alternatives My Goal

17 Pilot projects with 3 DOTs to test final results of in- situ calibration USGS will provide new laboratory calibration at no cost DOT to acquire data over a calibration range USGS to provide in-situ calibration parameters DOT to use old, new, and in-situ calibration in an actual aerotriangulation job USGS and DOT to analyze results and report at future forum The Challenge

18 Due for new calibration or recent calibration Have in-situ calibration range or near one Both digital and analog camera would be a plus, but not necessary Potential Players

19 Contact: George Y. G. Lee Photogrammetric Engineering Team Member U.S. Geological Survey Menlo Park, CA Interested?

20 Contact: Gregory L. Stensaas Remote Sensing Systems Characterization Manager USGS EROS Data Center nd Street Sioux Falls, SD Questions or issues

21 Questions or comments? The In-Situ Challenge