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Oregon Lidar Data Standard Call for Endorsement. FIT Forum, November 10, 2010. Data standa r d applies only to lidar points which are the XYZ coordinates of random samples of surface of the earth Lidar points shall be in LAS 1.1 or 1.2 format (ASPRS standard)
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Oregon Lidar Data StandardCall for Endorsement FIT Forum, November 10, 2010
Data standard applies only to lidar points which are the XYZ coordinates of random samples of surface of the earth • Lidar points shall be in LAS 1.1 or 1.2 format (ASPRS standard) • Lidar points shall be collected at a minimum pulse density of 4/m2 • Lidar points shall be collected with a vertical accuracy of 20 cm RMSE or better on flat unobstructed surfaces • NAVD88 preferred, Oregon Lambert, UTM, State Plane preferred • Metadata shall include a process description covering flying height, IMU and GPS parameters, pulse density, sampling frequency and swath overlap LAS attributes
Next Steps • Do we need further standards for GIS products derived from lidar points? • DEMs; resolution, filtering, interpolation • Contours; filtering, accuracy • Intensity images: methods, format, normalization