Coastal Connecticut 2004 Color Orthophoto

+ Resource Description

Citation

Information used to reference the data.

Title: Coastal Connecticut 2004 Color Orthophoto

Originators: NOAA Coastal Services Center (CSC)

U.S. Geological Survey (USGS)

Publisher: State of Connecticut, Department of Environmental Protection (CT DEP)

Publication place: Hartford, Connecticut, USA

Publication date: 20041223

Data type: SDE raster digital data

Data location: http://www.ct.gov/deep

Other citation details: Original Title: Connecticut Coastal ADS40 Digital Imagery Acquisition and Natural Color and Color Infrared Orthophoto Production. CT DEP mosaiced the ADS40 imagery from CSC and NOAA into a single raster dataset that covers the Connecticut coastline, projecting it to the Connecticut State Plane Coordinate System, NAD 83.

Description

A characterization of the data, including its intended use and limitations.

Abstract: Coastal Connecticut 2004 Color Orthophoto is a raster mosaic of ADS40 natual color digital imagery taken in September 2004 for Connecticut municipalities located along the Long Island Sound coastline. This is a raster mosaic of 122 quarter quadrangle natual color input rasters in GeoTIFF format.

An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.

This task consists of two primary components, ADS40 digital image acquisition and natural color and color infrared digital orthophoto production. In addition to the orthophotos a reflective surface digital elevation data set covering the project area was produced.

Purpose: These data have been created as a result of the need for having geospatial data immediately available and easily accessible in order to enhance the capability of the NOAA Coastal Services Center (CSC) and the USGS.

Supplemental information: The bounding coordinates provided within the Spatial Domain section represent a rectangle covering the total area in which the project is located. The actual project boundary located within this area is comprised of areas delimited by areas along the coast of the state of Connecticut.

The Coastal Connecticut project area is comprised of approximately 930 square miles. A total of 244 orthos (122 natural color and 122 color infrared) were produced to cover this area.

Aerial imagery was collected in panchromatic, Red, Green, Blue and Near Infrared which yielded a natural color and false color infrared version of the completed digital orthophotography. In addition to producing the digital ortho imagery a first surface (reflective surface) elevation data set was produced. Imagery was collected at an approximate altitude of 15,750 feet above mean terrain.

The ADS40 digital camera system used in this project incorporates the latest in sensor technology, optics, electronics, data transfer, and storage. The ADS40 imagery is generated from seven parallel sensor lines in the focal plane of a single lens system, three panchromatic (forward, nadir, backward), red, green, and blue lines placed next to each other, and one infrared. Each panchromatic channel consists of two lines, each with 12,000 pixels, staggered (shifted with respect to each other) by 0.5 pixels. The viewing angles and characteristics of the sensor are as follows -

- Focal length 62.5mm

- Pixel size 6.5mm

- PAN 2 arrays 12,000 pixels each

- R,G,B and NIR,R,G 12,000 pixels

- Backward to nadir stereo angle -14.1 degrees

- Near infrared to nadir stereo angle -2.05 degrees

- Dynamic Range of CCD - 12-bits for all arrays for this dataset, the natural color and color infrared orthoimages were produced at 0.50-meter pixel resolution.

Each digital orthorectified quarter quad provides imagery for a nominal 3.75 by 3.75 minute area corresponding to the USGS quarter quad boundaries. The projected coordinate system is UTM (Zone 18) with a NAD83 datum. The naming convention is based on the National Grid.

Deliverables include -

- 24-Bit Natural Color in GeoTIFF format

- 24-Bit False Color Infrared in GeoTIFF format

- Reflective surface digital elevation data set in .flt

Dataset credit: EarthData International, LLC

Language of dataset: en

Data Type

How the data are represented, formatted and maintained by the data producing organization.

File or table name: depgis.DEP.Ortho_2004_Coast_Color

Data type: SDE raster digital data

Data format: SDE Raster Dataset

Native dataset environment: This raster mosaic is maintained by the State of Connecticut using ArcGIS software developed by Environmental Systems Research Institute (ESRI) in a Microsoft Windows operating system environment. Original Data Set Environment included Leica ADS40 Digital Camera System, ISTAR Digital Image Processing Software, Z/I Imaging Orthopro 4.0, Windows NT/2000 Systems.

Time Period of Data

Time period(s) for which the data corresponds to the currentness reference.

Date: 20040920

Date: 20040922

Currentness reference: ground condition

Status

The state of and maintenance information for the data.

Data status: Complete

Update frequency: Unknown

Key Words

Words or phrases that summarize certain aspects of the data.

Theme:

Keywords: imageryBaseMapsEarthCover

Keyword thesaurus: ISO 19115 Topic Category

Theme:

Keywords: rectified imagery, rectified image, orthophoto, Digital Orthophoto Quarter Quad (DOQQ), image map, Natural Color DOQQ, Color Infrared DOQQ

Keyword thesaurus: none

Place:

Keywords: Connecticut, CT

Keyword thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.

Place:

Keywords: United States of America, USA

Keyword thesaurus: U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.

Data Access Constraints

Restrictions and legal prerequisites for accessing or using the data after access is granted.

Access constraints: None. No restrictions or legal prerequisites for accessing the data. The data is in the public domain and may be redistributed.

Use constraints: None. No restrictions or legal prerequisites for using the data after access is granted.

Data Security Information

Handling restrictions imposed on the data because of national security, privacy or other concerns.

Security classification: Unclassified

+ Graphic Example

Browse Graphic

Graphic illustration of the data.

Browse graphic 1

Open - Full view of Coastal Connecticut 2004 Color Orthophoto.

Browse graphic 2

Open - Detail view of Coastal Connecticut 2004 Color Orthophoto within vicinity of the University of Connecticut at Avery Point in Groton, Connecticut.

+ Spatial Reference Information

Horizontal Coordinate System

Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.

Projected coordinate system:

Name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet

Map units: survey feet

Geographic coordinate system:

Name: GCS North American 1983

Coordinate System Details

Map projection

Map projection name: Lambert Conformal Conic

Standard parallel: 41.200000

Standard parallel: 41.866667

Longitude of central meridian: -72.750000

Latitude of projection origin: 40.833333

False easting: 999999.999996

False northing: 499999.999998

Planar Coordinate Information

Planar coordinate encoding method: row and column

Coordinate representation:

Abscissa resolution: 1.694807

Ordinate resolution: 1.672015

Planar distance units: survey feet

Geodetic model

Horizontal datum name: North American Datum of 1983

Ellipsoid name: Geodetic Reference System 80

Semi-major axis: 6378137.000000

Denominator of flattening ratio: 298.257222

Vertical Coordinate System

Reference system from which vertical distances (altitudes or depths) are measured.

Altitude system definition:

Altitude resolution: 1.000000

Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

Spatial Domain

The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.

Bounding Coordinates

In Projected or local coordinates

NAD 1983 StatePlane Connecticut FIPS 0600 Feet

Boundary	Coordinate
Left	723536.706809 (survey feet)
Right	1258236.547515 (survey feet)
Top	790046.562142 (survey feet)
Bottom	538630.724920 (survey feet)

In Unprojected coordinates (geographic)

GCS North American 1983

Boundary	Coordinate
West	-73.761207 (longitude)
East	-71.805455 (longitude)
North	41.629364 (latitude)
South	40.934964 (latitude)

+ Data Structure and Attribute Information

Overview

Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.

Direct spatial reference method: Raster

Raster Information

Type and number of raster spatial objects in the data.

Raster format: SDR

Raster object type: Pixel

Number of raster bands: 3

Raster properties

Raster origin: Upper Left

Has pyramid layers: TRUE

Has image colormap: FALSE

Compression type: JPEG

Raster display type: pixel codes

Cell information

Number of cells on x-axis: 315493

Number of cells on y-axis: 150367

Number of cells on z-axis: 1

Bits per cell: 8

Cell Size:

X direction: 1.694807

Y direction: 1.672015

+ Data Quality and Accuracy Information

General

Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.

Logical consistency report: Compliance with the accuracy standard was ensured by the placement of photo identifiable ground control points and the collection of airborne GPS data. Using several tools that are part of the ISTAR workflow, a digital surface model (DSM) was correlated at a post spacing of 2 meters depending on terrain and land cover. The ISTAR correlation algorithm computes the X,Y,Z value for each DSM post utilizing every stereo angle that is available. A series of DSM files were created for each acquisition block, one for each stereo look angle. A mosaic was then created from the separate DSM files where the best vertical value for each posting was selected from all look anglescompared against the aerotriangulation adjustment which is incorporated into the mosaic. EarthData then edited the surface to the level required to support the orthophoto production. An RMS value was calculated based on the imagery utilized in the production of the tile by comparing the AT X and Y coordinates. This value represents an estimate of the accuracy of the horizontal coordinate measurements in the tile expressed in meters.

Completeness report: Compliance with the accuracy standard was ensured by the placement of photo identifiable ground control points and the collection of airborne GPS data.

Attribute Accuracy

Accuracy of the identification of data entities, features and assignment of attribute values.

Attribute accuracy report: The digital imagery for each acquisition sortie is differentially rectified to produce orthophotography for the Red, Green, and The digital imagery for each acquisition sortie is differentially rectified to produce orthophotography for the Red, Green, and Blue and near infrared channels at a resolution of 0.50-meter per pixel. The orthophoto mosaics are inspected for accuracy issues that fall in the following categories -

- Aerotriangulation related

- DSM related

Accuracy issues will be investigated through review an correction of the DSM or triangulation adjustment. Once the imagery has passed quality control review, final radiometric adjustments are performed to create a uniform overall appearance.

Positional Accuracy

Accuracy of the positional aspects of the data.

Horizontal accuracy report: The horizontal accuracy of the orthorectified images is mainly determined by the accuracy of the aerotriangulation and digital surface model (DSM). For each rectified image (lift), an RMSE value for all of the standard errors of the tie/pass/control points located in that image (lift) and computed by the aerotriangulation solution was calculated.

The DSM accuracy assessment was achieved by comparing the aerotriangulation-derived elevation with the elevation of the DSM. In addition, visual examination was employed to assess all tiles and its relative edge match. All results were examined for consistency and its compliance with the NMAS accuracy standard.

Horizontal positional accuracy assessment:

Accuracy values

0.273256

Explanation: Accuracy assessment determined by evaluating the horizontal accuracy obtained during the aerotriangulation process for each lift.

Vertical accuracy report: CheckDEM is a program designed to compare a list of controls against DEM file(s) and therefore to check the accuracy of the DEM file(s). For each control point, first, the program selects all the DEM points that fall into a given radius from the position of the control point. Second, the program calculates a weighted average of the DEM points to interpolate an elevation at the position of the control point. And last, the program computes the difference between the elevation of the control point and the interpolated elevation. After all the control points have been checked, the program computes several statistics on the differences between controls and interpolated DEM elevations. The statistics include RMSE, Standard Deviation, Minimum Difference, Maximum Difference, and Mean Difference. In the output report, the program prints out elevation differences for every control points and the statistics.

Raw elevation measurements have been determined to be vertically accurate to within 0.328 meters.

+ Data Source and Process Information

Data Sources

Information about the source data used to construct or derive the data.

Data source information

GPS ground control

Title: Ground Control Survey of Coastal Connecticut

Originators: Terrasurv Inc.

Publication date: 20041223 Publication time: Unknown

Data type: model

Media: digital tape media

Source contribution: Terrasurv Inc. established ground control to support the aerotriangulation process. A total of 16 points were surveyed to support the AT process.

Beginning date: 20040927

Ending date: 20040928

Currentness reference: ground condition

digital surface model

Title: Coastal Connecticut Digital Surface Model

Originators: EarthData International

Publication date: 20041223 Publication time: Unknown

Data type: model

Media: digital

Source contribution: Used to provide ground elevations for the orthorectification process.

Date: 20041223

Currentness reference: publication date

imagery

Title: ADS40 Digital Imagery

Originators: EarthData International, LLC

Publication date: 20041223 Publication time: Unknown

Data type: remote-sensing image

Data location: http://www.ct.gov/deep

Media: digital

Source contribution: The digital imagery mission was composed of a total of 2 lifts. Imagery was obtained at an altitude of 15,750 feet above mean terrain. The mission was flown with a Leica ADS40 digital camera with ABGPS and IMU.

Imagery was acquired on the following dates -

Lift Date

26404B 09/20/2004

26604A 09/22/2004

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 18

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -075.000000

Latitude_of_Projection_Origin: +00.000000

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.50

Ordinate_Resolution: 0.50

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.2572221

Beginning date: 20040920

Ending date: 20040922

Currentness reference: ground condition

imagery mosaic

Title: Coastal Connecticut 2004 Color Orthophoto

Originators: NOAA Coastal Services Center (CSC)

U.S. Geological Survey (USGS)

Publisher: State of Connecticut, Department of 0Protection (CT DEP)

Publication place: Hartford, Connecticut, USA

Publication date: 20041223

Data type: SDE raster digital data

Data location: http://www.ct.gov/deep

Media: digital tape media

Source contribution: Statewide raster mosaic of all input rasters. The raster mosaic is in the Connecticut State Plane Coordinate System, North American Datum of 1983 (NAD83).

Beginning date: 20040920

Ending date: 20040922

Currentness reference: ground condition

Process Steps

Information about events, parameters, tolerances and techniques applied to construct or derive the data.

Process step information

Process Step 1

Process description: Source Imagery - ADS40 Digital Camera Imagery.

Control - Airborne GPS/IMU supplemented with photo identifiable field control.

Aerotriangulation - ISTAR software package.

Elevation Model - ISTAR software package.

Radiometric Balancing - ISTAR software package and COTS Software (PhotoShop).

Orthorectification - ISTAR software package.

Mosaic - ISTAR software package and Z/I Imaging OrthoPro software package.

The following section describes the ISTAR digital image production sequence. This is a mature, stable workflow and incorporates all production components into an integrated series of tools to accomplish photogrammetric mensuration, aerotriangulation, elevation model development, ortho production and finishing. Production processes are fully documented in accordance with ISO9001 mandates.

The following is a step-by-step description of the ISTAR workflow to develop digital orthophoto quarter quads.

Step 1

The unprocessed ADS40 data and accompanying GPS and IMU data for one or more sorties was downloaded from the portable hard disks and checked to verify that no files were corrupted and that all data could be downloaded. Digital aerial imagery that was used for this project includes the Red, Green, Blue, Near Infrared channels as well as the S1 pan, S2 pan and nadir green channels. Sample segments of the imagery were inspected in an uncorrected state to verify the integrity of each data sortie.

Step 2

The GPS/IMU parameters for each sortie were optimized using the ground control points and the error calibration map. The horizontal and vertical positions of all ground control points in the block were observed in each channel (R,G,B, IR, R, G, S1 Pan, S2 Pan).

Step 3

Aerotriangulation was accomplished using the CLB tool that is a component of the ISTAR process. The ground control, GPS and IMU information were ingested and tie points between strips were identified. Normally, only 3 tie points are needed between adjacent flight lines.

Step 4

CLB produces a bundle adjustment for each data sortie. The results of the adjustment were verified through the development of a sub-sampled panchromatic mosaic for the data sortie. The mosaic was corrected using the aerotriangulation points only. This mosaic was inspected by the photogrammetric technician to identify any gross errors in the adjustment as well as the identification of any voids or image quality problems.

Step 5

Using several tools that are part of the ISTAR workflow, a digital surface model (DSM) is correlated at a post spacing of 2 meters depending on terrain and land cover. The ISTAR correlation algorithm computes the X,Y,Z value for each DSM post utilizing every stereo angle that is available. A series of DSM files are created for acquisition block, one for each stereo look angle. A mosaic is then created from the separate DSM files where the best vertical value for each posting is selected from all look angles compared against the aerotriangulation adjustment which is incorporated into the mosaic. EarthData will then edit the surface to the level required to support the orthophoto production.

Step 6

The digital imagery for each acquisition sortie was differentially rectified to produce digital orthophoto mosaics in natural color and false color infrared renditions at a resolution of 0.50-meter per pixel. The orthophoto mosaics were inspected for accuracy issues that fall in the following categories -

- Aerotriangulation related

- DSM related

Accuracy issues were investigated through review and correction of the DEM or triangulation adjustment. Once the imagery passed quality control review, final radiometric adjustments were performed to create a uniform overall appearance. The final DOQQ tiles were organized for nominal 3.75 by 3.75 minute areas corresponding to the USGS quarter quad boundaries and were clipped out with the specified overage of a minimum of 30 meters beyond the quarter quad boundaries.

Imagery was output in the folowing formats -

24-bit natural color GeoTIFF images

24-bit false color infrared GeoTIFF images

Step 7

The completed digital orthophotos were checked for image quality. Minor artifacts were corrected using Adobe Photoshop in an interactive editing session. Digital files were assigned final names based on the National Grid.

Step 8

Project level metadata describing the orthophoto production process was developed to support the task.

Process date: 20041223

Data Source used

GPS ground control

Title: Ground Control Survey of Coastal Connecticut

Originators: Terrasurv Inc.

Publication date: 20041223 Publication time: Unknown

Data type: model

Media: digital tape media

Source contribution: Terrasurv Inc. established ground control to support the aerotriangulation process. A total of 16 points were surveyed to support the AT process.

Beginning date: 20040927

Ending date: 20040928

Currentness reference: ground condition

digital surface model

Title: Coastal Connecticut Digital Surface Model

Originators: EarthData International

Publication date: 20041223 Publication time: Unknown

Data type: model

Media: digital

Source contribution: Used to provide ground elevations for the orthorectification process.

Date: 20041223

Currentness reference: publication date

imagery

Title: ADS40 Digital Imagery

Originators: EarthData International, LLC

Publication date: 20041223 Publication time: Unknown

Data type: remote-sensing image

Data location: http://www.ct.gov/deep

Media: digital

Imagery was acquired on the following dates -

Lift Date

26404B 09/20/2004

26604A 09/22/2004

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 18

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -075.000000

Latitude_of_Projection_Origin: +00.000000

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.50

Ordinate_Resolution: 0.50

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.2572221

Beginning date: 20040920

Ending date: 20040922

Currentness reference: ground condition

Process Step 2

Process description: Using ESRI ArcGIS 9.2 software, an empty raster dataset was created and subequently populated with input rasters to create a raster mosaic of all imagery along the Connecticut coast.

STEP 1 - Create Raster Dataset - The Coordinate System for the raster dataset is NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet. The image compression type is JPEG with a compression quality of 90. The Pyramid Reference Point X and Y coordinate are 687800 and 1015180, respectively. Pyramids: 8 Bilinear. The Pixel Type is 8_BIT_UNSIGNED, which supports index values from 0 to 255. Raster statistics were not built. Below is a record of the ESRI Geoprocessing CreateRasterDataset command and arguments that created the empty raster dataset.

CreateRasterDataset "Database Connections\10.18.8.94.depgisraster@DEP.sde"

Ortho_2004_Coast_Color # 8_BIT_UNSIGNED

PROJCS['NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet',

GEOGCS['GCS_North_American_1983',

DATUM['D_North_American_1983',

SPHEROID['GRS_1980',6378137.0,298.257222101]],

PRIMEM['Greenwich',0.0],

UNIT['Degree',0.0174532925199433]],

PROJECTION['Lambert_Conformal_Conic'],

PARAMETER['False_Easting',999999.999996],

PARAMETER['False_Northing',499999.999998],

PARAMETER['Central_Meridian',-72.75],

PARAMETER['Standard_Parallel_1',41.2],

PARAMETER['Standard_Parallel_2',41.86666666666667],

PARAMETER['Latitude_Of_Origin',40.83333333333334],

UNIT['Foot_US',0.3048006096012192]]

3 DEPRASTER "PYRAMIDS 8 BILINEAR" "128 128" "JPEG 90" "687800 1015180" "Database Connections\10.18.8.94.depgisraster@DEP.sde\depgisraster.DEP.Ortho_2004_Coast_Color

STEP 2 - Mosaic 122 input rasters. The Mosaicking Tolerance value was set to zero (0). Consequently, pixel values in the raster mosaic resulted from a resampling of pixels values from individual input rasters due to the difference in alignment of input and mosaic (target) pixels. Additionally, the Ignore Background Value was set to one (1). This causes pixels along the borders of the input rasters with values of 1 to be set to NoData pixels along the borders of the output raster mosaic when they are projected from UTM to the Connecticut State Plane Coordinate System as part of the mosaic process. Below is an example usage of the ESRI Geoprocessing Mosaic command and arguments used to mosaic 6 quarter quadrangle input rasters.

Mosaic P:\tif_format\18TXL048464.tif P:\tif_format\18TXL049394.tif; P:\tif_format\18TXL100534.tif; P:\tif_format\18TXL101464.tif; P:\tif_format\18TXL102395.tif; P:\tif_format\18TXL103326.tif "Database Connections\10.18.8.94.depgisraster@DEP.sde\DEPGISRASTER.DEP.ORTHO_2004_COAST_COLOR" LAST FIRST 1 # NONE 0 "Database Connections\10.18.8.94.depgisraster@DEP.sde\DEPGISRASTER.DEP.ORTHO_2004_COAST_COLOR"

Organization: State of Connecticut, Department of Environmental Protection

Person: Howie Sternberg

Phone: 860-424-3540

Address type: mailing and physical address

Address: 70 Elm Street

City: Hartford

State or Province: Connecticut

Postal code: 06106

Country: USA

Process date: 200770821 Process time: 120344

Process software and version: ArcGIS 9.2

Data Source used

imagery

Title: ADS40 Digital Imagery

Originators: EarthData International, LLC

Publication date: 20041223 Publication time: Unknown

Data type: remote-sensing image

Data location: http://www.ct.gov/deep

Media: digital

Imagery was acquired on the following dates -

Lift Date

26404B 09/20/2004

26604A 09/22/2004

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 18

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -075.000000

Latitude_of_Projection_Origin: +00.000000

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.50

Ordinate_Resolution: 0.50

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.2572221

Beginning date: 20040920

Ending date: 20040922

Currentness reference: ground condition

Data Source produced

imagery mosaic

Title: Coastal Connecticut 2004 Color Orthophoto

Originators: NOAA Coastal Services Center (CSC)

U.S. Geological Survey (USGS)

Publisher: State of Connecticut, Department of 0Protection (CT DEP)

Publication place: Hartford, Connecticut, USA

Publication date: 20041223

Data type: SDE raster digital data

Data location: http://www.ct.gov/deep

Media: digital tape media

Source contribution: Statewide raster mosaic of all input rasters. The raster mosaic is in the Connecticut State Plane Coordinate System, North American Datum of 1983 (NAD83).

Beginning date: 20040920

Ending date: 20040922

Currentness reference: ground condition

ESRI geoprocessing history

Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.

ESRI geoprocessing command information

1 CreateRasterDataset_1

Date: 20070821 Time: 120334

Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CreateRasterDataset

Command issued: CreateRasterDataset "Database Connections\10.18.8.94.depgisraster@DEP.sde" Ortho_2004_Coast_Color # 8_BIT_UNSIGNED PROJCS['NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',999999.999996],PARAMETER['False_Northing',499999.999998],PARAMETER['Central_Meridian',-72.75],PARAMETER['Standard_Parallel_1',41.2],PARAMETER['Standard_Parallel_2',41.86666666666667],PARAMETER['Latitude_Of_Origin',40.83333333333334],UNIT['Foot_US',0.3048006096012192]] 3 DEPRASTER "PYRAMIDS 8 BILINEAR" "128 128" "JPEG 90" "687800 1015180" "Database Connections\10.18.8.94.depgisraster@DEP.sde\depgisraster.DEP.Ortho_2004_Coast_Color"

2 Mosaic_2

Date: 20070821 Time: 121627