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DE_Imagery_SP/DE_Imagery_1937 (ImageServer)

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Service Description:

Resolution: 1.0 Meter

Band: 1-band: Panchromatic

USDA Agricultural Adjustment AdministrationBlack and WhiteScanned and georectified using ERDAS ImagineFlying height 40,000 feet, 6-inch focal length cameraScale: 1:20,000SRS: NAD83 HARN Delaware State Plane meters

These are scanned images from aerial photography flow in 1937/38 by the Agricultural Stabilization and Conservation Service, maintained by the National Archives. These images are presented as individual tiles, county-wide and state-wide mosaics. Initial purpose was to provide base for digitizing Historic Forest Cover in Delaware. The data set could be used for other similar change analyses.

1. Heads-up digitizing was used to create ground control points on the 1937 Images using the 1997 Imagery as a reference. Every attempt was made to create GCPs at a standard scale of 1:3,000, however, due to photo quality this was not always possible. The scanned images were then registered to those points. The ground control points were stored for each image tile along with the RMS error from the registration process. See the included tutorial file for more detail on the registration process. This document was used for training and reference by staff members doing the processing. 2. Registered images (1937 Corrected) were subsetted (i.e. cropped) to remove photograph borders, fiducial marks, and distorted edges. 3. Image subsets (1937 Sub) were grouped together by county and combined into image mosaics.



Name: DE_Imagery_SP/DE_Imagery_1937

Description:

Resolution: 1.0 Meter

Band: 1-band: Panchromatic

USDA Agricultural Adjustment AdministrationBlack and WhiteScanned and georectified using ERDAS ImagineFlying height 40,000 feet, 6-inch focal length cameraScale: 1:20,000SRS: NAD83 HARN Delaware State Plane meters

These are scanned images from aerial photography flow in 1937/38 by the Agricultural Stabilization and Conservation Service, maintained by the National Archives. These images are presented as individual tiles, county-wide and state-wide mosaics. Initial purpose was to provide base for digitizing Historic Forest Cover in Delaware. The data set could be used for other similar change analyses.

1. Heads-up digitizing was used to create ground control points on the 1937 Images using the 1997 Imagery as a reference. Every attempt was made to create GCPs at a standard scale of 1:3,000, however, due to photo quality this was not always possible. The scanned images were then registered to those points. The ground control points were stored for each image tile along with the RMS error from the registration process. See the included tutorial file for more detail on the registration process. This document was used for training and reference by staff members doing the processing. 2. Registered images (1937 Corrected) were subsetted (i.e. cropped) to remove photograph borders, fiducial marks, and distorted edges. 3. Image subsets (1937 Sub) were grouped together by county and combined into image mosaics.



Single Fused Map Cache: true

Tile Info: Storage Info: Extent: Initial Extent: Full Extent: Pixel Size X: 1.0

Pixel Size Y: 1.0

Band Count: 3

Pixel Type: U8

RasterFunction Infos: {"rasterFunctionInfos": [{ "name": "None", "description": "A No-Op Function.", "help": "" }]}

Mensuration Capabilities: Basic

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 8000000

Max Scale: 1000

Copyright Text: USDA Agricultural Stabilization and Conservation Service

Service Data Type: esriImageServiceDataTypeProcessed

Min Values: 0, 0, 0

Max Values: 255, 255, 255

Mean Values: 120.51692513819181, 120.51692513819181, 120.51692513819181

Standard Deviation Values: 48.74915919774053, 48.74915919774053, 48.74915919774053

Object ID Field: OBJECTID

Fields: Default Mosaic Method: ByAttribute

Allowed Mosaic Methods: ByAttribute,NorthWest,Center,LockRaster,Nadir,Viewpoint,Seamline,None

SortField: LowPS

SortValue: 0

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bilinear

Max Record Count: 1000

Max Image Height: 500000

Max Image Width: 500000

Max Download Image Count: 20

Max Mosaic Image Count: 2000

Allow Raster Function: true

Allow Copy: true

Allow Analysis: true

Allow Compute TiePoints: false

Supports Statistics: true

Supports Advanced Queries: true

Use StandardizedQueries: true

Raster Type Infos: Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources:   Info   Histograms   Statistics   Key Properties   Legend   Raster Function Infos

Supported Operations:   Export Image   Query   Identify   Measure   Compute Histograms   Compute Statistics Histograms   Get Samples   Compute Class Statistics   Query Boundary   Compute Pixel Location   Compute Angles   Validate   Project