Dataset description: Orthoimagery of Lake Tahoe near Dollar Point

Lakebed orthoimagery was developed from underwater images collected near Dollar Point in Lake Tahoe, California, and processed using Structure-from-Motion (SfM) photogrammetry techniques. The orthoimages were developed using both image-mosaic and image-averaging methods, which were then output as 5-mm resolution rasters. In general, the "Mosaic" product is somewhat sharper in resolution but will include some distinct seam lines and noticeable differences in image quality across the image. The "Average" product, in contrast, is more uniform in color and quality but blurrier overall.

Version	1
Keywords	visible light imaging, lakebed characteristics, structure from motion, geospatial datasets, remote sensing
Data types	Photo
Format	TIFF;
Amount	10700 MB

Contacts

Contact	Jonathan Warrick PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P9934I6U
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9934I6U/SQUID5_Tahoe_2021_Ortho_5mm_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2021-607-FA	SQUID-5 Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with 5 cameras designed by Gerry Hatcher for SfM data collection.