Mark Hess and Keith Jackson, Ocean Imaging 20130417 raster digital data http://bios.dfg.ca.gov/ ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/1000_1099/ds1030.zip This raster dataset contains a habitat classification of either offshore giant kelp beds and/or the intertidal zone along the California North Central Coast region from Pigeon Point up to Point Arena, including select bays and river mouths designated as MPAs. [This is an aggregated dataset of the California North Central Coast rasters. The individual North Central Coast rasters were combined together by the California Dept. of Fish and Wildlife(CDFW) for better functionality in BIOS]. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- This raster dataset was developed for the Sea Grant MPA Baseline Program as part of the project “High Resolution Nearshore Substrate Mapping and Persistence with Multispectral Aerial Imagery” (#R/MPA17 09-015). The study region is the California North Central Coast (NCC). The imagery used for this habitat classification were collected by Ocean Imaging (OI) and Fugro EarthData. OI acquired this imagery on 03/26/2010 using the Digital Multispectral Camera (DMSC). Details on this system and the data processing are below in the Lineage section of this document. Fugro EarthData acquired the imagery used for this project between 09/22/2010 – 09/23/2010 and delivered fully georeferenced and orthorectified, 12-bit imagery with a spatial resolution of 0.30 meters to OI in 2011. Details on this system and the data processing are also below in the Lineage section of this document. Individual DMSC and ADS40 scenes were mosaicked into sections based on the USGS orthoquads for the California North Central Coast in order to generate the multispectral imagery required to produce the habitat classification thematic maps of the California North Central Coast’s intertidal region and kelp beds from Pigeon Point up to Point Arena, including select bays and river mouths designated as MPAs. More information on the classes resolved and processing methods are in the Lineage section of this document. Complete None planned -123.750350 -122.369540 38.974982 37.178492 ISO 19115 Topic Categories biota oceans imageryBaseMapsEarthCover environment None California MPA Intertidal ADS40 Ocean Imaging MPA Baseline Program DMSC Sea Grant Substrate Wetlands Multispectral Imagery Kelp Habitat Classification None TBD by Sea Grant or MPA Baseline Program Managers Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.0.5524 None Ocean Imaging (OI) owns and operates a 4-channel aerial imaging sensor - the DMSC - manufactured by SpecTerra, LTD in Australia. The unit incorporates 4 synchronized, progressive scan 1024x1024 CCD cameras with spectral range capability from 350-990nm. Data is captured in 12-bit format. The unit is integrated with a DGPS for synchronous frame location logging. The channel wavelengths are customized by the use of narrow-band (10-20nm) interference filters. Spectral sensitivity is also customizable through software controlled shutter speed. The DMSC is a portable system suitable for mounting on a variety of aircraft. It acquires successive image frames at a rate automatically computed from the DGPS-derived ground speed and user-specified frame-to-frame overlap margin. OI also owns and Inertial Movement Unit (IMU) which collects precise location, altitude, roll, pitch and heading of the DMSC. The IMU was run in tandem during image collection and data collected will be used in the post-processing of the imagery. OI used a filter combination of 451-551-710-850 nm Data Acquisition: Imagery for the Central-Northern California coast was acquired on 03/26/2010 at an altitude of 6500 feet with 60% scene overlap resulting in an initial ground sampling distance of 0.93 meters. Imagery was acquired from a Cessna 206 aircraft by Ocean Imaging staff. Ocean Imaging (OOI) acquired 4-banded, multispectral Orthoimagery from Fugro EarthData’s (http://www.fugroearthdata.com/index.php) Leica ADS40-SH52 digital camera system. The ADS40 is a 12 CCD pushbroom sensor with a raw camera resolution of 3,000 x 2,000 pixels for the multispectral data. It utilizes 4 panchromatic CCD: 27 degrees forward view, 16 degrees backward view, two nadiral views with an overlapping of 3,25 microns and 2 x 4 multispectral CCD (red, green, blue and near infrared – RGB-NIR), with both a nadiral and 16 degree backward views. There are five spectral channels measuring simultaneously: panchromatic, red (λ = [590 – 675]nm), green (λ = [500 – 650]nm), blue (λ = [400 – 580]nm) and near infrared (λ = [675 – 850]nm). The RGB-NIR bands were used for this project. Fugro EarthData acquired the imagery used for this project between 09/22/2010 – 09/23/2010 and delivered fully georeferenced and orthorectified, 12-bit imagery with a spatial resolution of 0.30 meters to OI in 2011. The initial imagery products received from Fugro were mosaicked into 1500x1500 meter tiled imagery along the California coast. OI subsequently mosaicked the ADS40 data into USGS orthoquad regions for more efficient classification and data management using ERDAS Imagine. Mosaicked imagery was then used to generate the habitat classification products. Final image mosaic files have been delivered to Sea Grant and Ocean Spaces in both ERDAS Imagine (.img) and GeoTif (.tif) formats. None MPAs Contained in USGS Orthoquad Regions: Point Arena Quad contains: Point Arena SMCA and Point Arena SMR; Saunders Reef Quad contains: Saunders Reef SMCA; Stewarts Point Quad contains: Del Mar Landing SMR and Stewarts Point SMR; Plantation Quad contains: Stewarts Point SMR and Salt Point SMP; Arched Rock Quad contains: Russian River SMCA and Russian River SMR; Duncans Mills Quad contains: Russian River SMR; Bodega Head Quad contains: Bodega Head SMR, Bodega Head SMCA and Estero Americano SMRMA; Valley Ford Quad contains: Estero Americano SMRMA and Estero de San Antonio SMRMA; Drakes Bay Quad contains: Drakes Estero SMCA, Estero de Limantour SMR, Point Reyes SMR and Point Reyes SMCA; Bolinas Quad contains: Duxbury SMP; Montara Mountain Quad contains: Montara SMR; Half Moon Bay Quad contains: Pillar Point SMCA. DMSC Data Processing: Upon completion of each flight, image data were downloaded from the DMSC onto an in-house computer hard drive and back-up copies were burned on DVD's. Pre-processing included a two-step procedure to eliminate slight band-to-band misalignment. This was done using customized software to first compute an overall x-y direction shift of bands 1, 3 and 4 relative to band 2. Each of the 4-band shifted image frames was then run through a Fast Fourier Transform (FFT)-based pattern recognition routine, which tiles the image into 80 pixel sections and computes a secondary, regional pixel shift on each band. Image Georeferencing/Mosaicking: The pre-processed imagery was then run through an in house customized software package to auto-georeference each of the pre-processed frames based off of the DGPS time stamp from the DMSC and the time stamp from the IMU. Once auto-georeferenced, frames were manually adjusted (shifted and or rotated) where needed. Adjusted frames were then mosaicked into USGS orthoquad regions for more efficient classification and data management using ERDAS Imagine. Mosaicked imagery was then used to generate the habitat classification products. Final image mosaic files have been delivered to Sea Grant and Ocean Spaces in both ERDAS Imagine (.img) and GeoTif (.tif) formats. Raster Complete chain 14 Grid Cell WGS 1984 UTM Zone 10N 0.9996 -123.0 0.0 500000.0 0.0 coordinate pair 0.000000002220024164500956 0.000000002220024164500956 meter D WGS 1984 WGS 1984 6378137.0 298.257223563 VAT_ds1030 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Value habitat classification 1 Whitewash/Undefined 2 Water 3 Sandy Beach 4 Mixed Red/Brown Algae 5 Tidepool/Shadow 6 Terrestrial Vegetation 7 Unvegetated Rock 8 Wrack 9 Kelp/Brown Algae 10 Blue-Green Algae 11 Cobble 12 Man-made 13 Driftwood 14 Surf Grass 15 Unknown Aquatic Vegetation 16 Eel Grass 17 Salt Marsh Vegetation 18 Submerged Aquatic Vegetation 19 Mud Flat 20 Green Algae Count 20160902 Ocean Imaging Mark Hess and Keith Jackson mailing

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