Bar Harbor 2008 Color IR

Identification Information

Citation Information

Originator	KAPPA Mapping Inc
Publication Date	2008
Title	Bar Harbor 2008 Color IR

Abstract

This OGC-compliant web mapping service (WMS) provides 2008 aerial orthophotos at a resolution of 1 foot for Bar Harbor, Maine and some adjacent areas. This WMS presents bands 2, 3, and 4 of this collect as false-infrared imagery. The data were collected with a Intergraph DMC digital camera, the NIR band (band 4) is collected in the 675-850nm wavelength. The imagery were captured April 19, 2008 by Richard Crouse & Associates of Frederick MD, and further processed by KAPPA Mapping of Bangor ME to create orthophotos

Purpose

General mapping, planning, and other municipal uses.

Time Period of Content

Calendar Date	20080419
Time of Day	unknown
Currentness Reference	ground condition

Status

Progress	Complete
Maintenance and Update Frequency	None planned

Bounding Coordinates

West Bounding Coordinate	-68.42
East Bounding Coordinate	-68.16
North Bounding Coordinate	44.45
South Bounding Coordinate	44.30

Keywords

Theme	ImageryBaseMapsEarthCover (ISO Keyword Thesaurus)
Place	Maine, United States, Bar Harbor (Maine GIS Thesaurus-Place)

Access Constraints

none

Use Constraints

none

Contact Person

Claire Kiedrowski, CP

Contact Organization

KAPPA Mapping Inc

Address Type

mailing and physical address

Address

6 State Street Suite 301

City

Bangor

State or Province

Maine

Postal Code

04401

Country

USA

Contact Voice Telephone

207-942-5200

Contact Electronic Mail Address

info@kappamap.com

Native Data Set Environment

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.1850

Horizontal Positional Accuracy Report

Horizontal_Positional_Accuracy_Report: Consistent with national standards for 1' ground sample distance (GSD).

Process Description

Imagery for the Town of Bar Harbor was acquired on April 19, 2008 using a Z/I Digital Mapping Camera (DMC). This metric digital camera is capable of capturing true color, color infrared (CIR), and panchromatic (B&W) imagery at the same time. Positioning of the image centers were also captured using Airborne GPS (AGPS). Imagery was captured for an output suitable for a 1' ground sample distance (GSD). Richard Crouse & Associates of Frederick Maryland were selected to provide this service. The coordinate system is Maine State Plane Coordinate System, East Zone, and the horizontal datum is NAD83. Units are in US Survey Feet. The vertical datum is NAVD 88.Previous control points (from the 2004 aerial mapping project) were refreshed with new paint so that they would be visible for the 2008 imagery. The ground control was tied to the AGPS data. Pass, tie, and ground control points were measured using SoftPlotter 4.1. Albany software was used to aerotriangulate the data. Maximum residuals were less than 0.5 feet for X, Y, and Z. Digital Terrain Models (DTM) are a necessary component to create ortho-rectified imagery. In this case, the existing 5' contour interval DTM was used, which was photogrammetrically captured from the 2004 imagery. Digital orthophotographs (1.0' ground sample distance) were created from the aerial images, the camera calibration report, the aerotriangulation data, and the existing 2004 DTM. A cubic convolution algorithm was used to orthorectify each image (using SoftPlotter v4.1 software). Mosaicking was performed with INPHO OrthoVista 4.2 software. Mosaicking occurred along sharp linear features when possible and linear feathering was used to the blend the images. Previous stereo-compiled planimetric features were compared to the same orthophoto features to ensure proper alignment. Image color was enhanced slightly with Adobe PhotoShop' s image adjustment tools. This step improves visual appeal without affecting positional accuracy. After the composite image was finalized, it was tiled with OrthoVista software. Typical tiles sizes for TIFF (with appropriate world file TFW) images were in the 150 MB range. Lastly, TIFF images were compressed (20:1) to MrSID image format using LizardTech's compression software. Both true color and CIR ortho tiles were delivered to the Town of Bar Harbor.The aerotriangulation results and the raw color-infrared images were also provided to Fred Dibello of Stantec for vernal pool mapping and analysis.

Contact Person

Claire Kiedrowski, CP

Contact Organization

KAPPA Mapping, Inc.

Address Type

mailing and physical address

Address

6 State Street, Suite 301

City

Bangor

State or Province

Maine

Postal Code

04401

Country

USA

Contact Voice Telephone

207-942-5200

Contact Electronic Mail Address

info@kappamap.com

Horizontal Datum Name

North American Datum of 1983

Ellipsoid Name

Geodetic Reference System 80

Contact Person

Steve Weed

Contact Organization

Town of Bar Harbor

Contact Position

Assessor

Contact Electronic Mail Address

assessor@barharbormaine.gov

Distribution Liability

Metadata Reference Information

Metadata Date

20100326

Metadata Contact

Contact Organization	Maine Office of GIS
Contact Position	GIS Coordinator
Address Type	mailing address
Address	State House Station #174
City	Augusta
State or Province	Maine
Postal Code	04333
Country	USA
Contact Voice Telephone	207-624-7700
Contact Facsimile Telephone	207-287-3842
Contact Electronic Mail Address	OIT.Customer-Support@maine.gove

Metadata Standard Name

FGDC Content Standards for Digital Geospatial Metadata

Metadata Access Constraints

none

Metadata Use Constraints

none