High Resolution Landcover, Philadelphia PA, 2008


Identification_Information:
Citation:
Citation_Information:
Originator:City of Philadelphia
Originator:University of Vermont Spatial Analysis Laboratory
Publication_Date:20111018
Title:
High Resolution Landcover, Philadelphia PA, 2008
Geospatial_Data_Presentation_Form:remote-sensing image
Online_Linkage: http://www.pasda.psu.edu
Description:
Abstract:
High resolution land cover dataset for Philadelphia.  Seven land cover classes were mapped: (1) tree canopy, (2) grass/shrub, (3) bare earth, (4) water, (5) buildings, (6) roads, and (7) other paved surfaces. The minimum mapping unit for the delineation of features was set at ten square feet. The primary sources used to derive this land cover layer were 2008 Orthophotography and 2008 LiDAR LAS data.  Ancillary data sources included GIS data (building footprints, road polygons, and hydrography) provided by City of Philadelphia. This land cover dataset is considered current as of 2008. Object-based image analysis techniques (OBIA) were employed to extract land cover information using the best available remotely sensed and vector GIS datasets. OBIA systems work by grouping pixels into meaningful objects based on their spectral and spatial properties, while taking into account boundaries imposed by existing vector datasets.  Within the OBIA environment a rule-based expert system was designed to effectively mimic the process of manual image analysis by incorporating the elements of image interpretation (color/tone, texture, pattern, location, size, and shape) into the classification process.  A series of morphological procedures were employed to insure that the end product is both accurate and cartographically pleasing. No accuracy assessment was conducted, but the dataset was subject to a thorough manual quality control.  More than 30700 corrections were made to the classification.
Purpose:
This dataset was developed as part of the Urban Tree Canopy (UTC) Assessment for Philadelphia. As such, it represents a 'top down' mapping perspective in which tree canopy over hanging other features is assigned to the tree canopy class. At the time of its creation this dataset represents the most detailed and accurate land cover dataset for the area.
Supplemental_Information:
This project was funded by the City of Philadelphia. The methods used were developed by the University of Vermont Spatial Analysis Laboratory with funding from the USDA Forest Service.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2008
Currentness_Reference:
ground condition
Status:
Progress:Complete
Maintenance_and_Update_Frequency:None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.284177
East_Bounding_Coordinate: -74.954025
North_Bounding_Coordinate: 40.143805
South_Bounding_Coordinate: 39.861282
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:Land cover
Theme_Keyword:UTC
Theme_Keyword:Urban
Theme_Keyword:tree canopy
Theme_Keyword:imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus:None
Place_Keyword:Philadelphia
Place_Keyword:Pennsylvania
Temporal:
Temporal_Keyword_Thesaurus:None
Temporal_Keyword:2008
Access_Constraints:None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Jarlath O'Neil-Dunne
Contact_Organization:University of Vermont Spatial Analysis Laboratory
Contact_Position:Geospatial Analyst
Contact_Address:
Address_Type:mailing and physical address
Address:
81 Carrigan Drive
Address:
Aiken Room 220
City:Burlington
State_or_Province:VT
Postal_Code:05405
Country:USA
Contact_Voice_Telephone:802-656-3324
Contact_Facsimile_Telephone:802-656-8683
Contact_Electronic_Mail_Address:joneildu@uvm.edu
Data_Set_Credit:
University of Vermont Spatial Analysis Laboratory
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.3500
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
No accuracy assessment was conducted, but the dataset was subject to a thorough manual quality control (QC).  30700 corrections were made to the classification.  Accuracy assessments from previous UTC land cover datasets indicate that the use OBIA techniques in combination with a detailed QC yield an overall accuracy of 95% or better.
Logical_Consistency_Report:
Valid raster dataset.
Completeness_Report:
Complete for Philadelphia based on 2010 boundary.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Unknown
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date:2008
Title:
True Color Orthophotography
Source_Scale_Denominator:8000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2008
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
True Color Orthophotography
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date:20100318
Title:
Planimetric Data
Source_Scale_Denominator:unknown
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2010
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Planimetric data
Source_Contribution:
building footprints, road polygons, and hydrography
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date:20101222
Title:
LiDAR Data
Source_Scale_Denominator:8000
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date:20080325
Single_Date/Time:
Calendar_Date:20080513
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
2008 LiDAR LAS Data
Source_Contribution:
elevation and statistical surfaces
Process_Step:
Process_Description:
Object based image analysis (OBIA) using a rule-based expert system
Process_Date:20101030
Process_Step:
Process_Description:
Manual corrections to land cover classification
Process_Date:201011
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
T:\TestSites\PA\Philadelphia\Temp\Metada_XMLs\20101222_Philadelphia_landcover_metadata.xml
Process_Date:20101223
Process_Time:10563500
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
T:\TestSites\PA\Philadelphia\Data\Metadata\metadata_landcover.xml
Process_Date:20110804
Process_Time:17301400
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Pixel
Row_Count:100306
Column_Count:89553
Vertical_Count:1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name:Lambert Conformal Conic
Lambert_Conformal_Conic:
Lambert Conformal Conic
Standard_Parallel:40.966667
Standard_Parallel:39.933333
Longitude_of_Central_Meridian:-77.750000
Latitude_of_Projection_Origin:39.333333
False_Easting:1968500.000000
False_Northing:0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:row and column
Coordinate_Representation:
Abscissa_Resolution:0.999900
Ordinate_Resolution:0.999900
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
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Land Cover
Entity_Type_Definition:
UTC
Attribute:
Attribute_Label:ObjectID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label:Value
Attribute_Definition:
Land cover code
Attribute_Definition_Source:
UTC
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:1
Enumerated_Domain_Value_Definition:
Tree Canopy
Enumerated_Domain:
Enumerated_Domain_Value:2
Enumerated_Domain_Value_Definition:
Grass/Shrub
Enumerated_Domain:
Enumerated_Domain_Value:3
Enumerated_Domain_Value_Definition:
Bare Soil
Enumerated_Domain:
Enumerated_Domain_Value:4
Enumerated_Domain_Value_Definition:
Water
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition:
Buildings
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition:
Roads/Railroads
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition:
Other Paved Surfaces
Attribute:
Attribute_Label:Count
Attribute_Definition:
# pixels per land cover class
Attribute_Definition_Source:
Internal
Attribute:
Attribute_Label:Red
Attribute:
Attribute_Label:Green
Attribute:
Attribute_Label:Blue
Attribute:
Attribute_Label:Class_names
Overview_Description:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Resource_Description:Downloadable Data
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size:0.000
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Metadata_Reference_Information:
Metadata_Date:20111019
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Jarlath O'Neil-Dunne
Contact_Organization:University of Vermont Spatial Analysis Laboratory
Contact_Position:Geospatial Analyst
Contact_Address:
Address_Type:mailing and physical address
Address:
81 Carrigan Drive
Address:
Aiken Center Room 220
City:Burlington
State_or_Province:VT
Postal_Code:05405
Country:USA
Contact_Voice_Telephone:802-656-3324
Contact_Facsimile_Telephone:802-656-8683
Contact_Electronic_Mail_Address:joneildu@uvm.edu
Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name:ESRI Metadata Profile
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