Applications/DMR_OHWM_AerialPhotos (ImageServer)

View In: ArcGIS JavaScript ArcGIS Online Map Viewer ArcGIS Earth ArcMap

View Footprint In: ArcGIS Online Map Viewer

Service Description: As part of delineating the ordinary high-water mark (OHWM), Wenck georeferenced aerial imagery collected before the installation of the Lake Sakakawea dam. The North Dakota Department of Mineral Resources (DMR) provided single frame aerial imagery for the years 1951 and 1943. Photos were georeferenced using imagery from 2016 to match road crossings and rock outcrops. The 2016 photos were downloaded from Geospatial Data Gateway as SID files as opposed to using the streaming web service. Images were projected on the fly from NAD 83 UTM Zone 13 North to NAD 83 North Dakota North State Plane. Aerial photos included several referencing points through refinement and distorted areas were clipped on the periphery of the images. Photos were inspected and clipped to remove highly distorted areas. Clipping the images on the far edge of the photos removed warping and creases; this is a legacy of scanning paper maps. Areas extending one mile outside of the draft OHWM were clipped. Georeferenced photos started at the western edge of the project area and continued east to New Town. Approximately 30 to 50 control points were placed manually to reference each image. Road crossings, farmsteads, and rock outcrops were used to reference the 1951 imagery to the 2016 NAIP photos. To help with edge matching, auto-referencing was used to place high concentrations of similar points on adjacent photos. When auto-referencing was used, the amount of control points significantly increased. Auto-reference points with high residuals were deleted. A second or third order polynomial transformation was used to fit the 1951 photo to the 2016 photo. The photo was checked for distortion and warping; control points were adjusted accordingly to minimize image distortion. The single frame photos were mosaiced together to create a seamless image for the project area and stored in a file geodatabase. The file geodatabase utilizes ESRI’s ArcGIS.

Name: Applications/DMR_OHWM_AerialPhotos

Description: As part of delineating the ordinary high-water mark (OHWM), Wenck georeferenced aerial imagery collected before the installation of the Lake Sakakawea dam. The North Dakota Department of Mineral Resources (DMR) provided single frame aerial imagery for the years 1951 and 1943. Photos were georeferenced using imagery from 2016 to match road crossings and rock outcrops. The 2016 photos were downloaded from Geospatial Data Gateway as SID files as opposed to using the streaming web service. Images were projected on the fly from NAD 83 UTM Zone 13 North to NAD 83 North Dakota North State Plane. Aerial photos included several referencing points through refinement and distorted areas were clipped on the periphery of the images. Photos were inspected and clipped to remove highly distorted areas. Clipping the images on the far edge of the photos removed warping and creases; this is a legacy of scanning paper maps. Areas extending one mile outside of the draft OHWM were clipped. Georeferenced photos started at the western edge of the project area and continued east to New Town. Approximately 30 to 50 control points were placed manually to reference each image. Road crossings, farmsteads, and rock outcrops were used to reference the 1951 imagery to the 2016 NAIP photos. To help with edge matching, auto-referencing was used to place high concentrations of similar points on adjacent photos. When auto-referencing was used, the amount of control points significantly increased. Auto-reference points with high residuals were deleted. A second or third order polynomial transformation was used to fit the 1951 photo to the 2016 photo. The photo was checked for distortion and warping; control points were adjusted accordingly to minimize image distortion. The single frame photos were mosaiced together to create a seamless image for the project area and stored in a file geodatabase. The file geodatabase utilizes ESRI’s ArcGIS.

Single Fused Map Cache: false

Extent:

Initial Extent:

Full Extent:

Pixel Size X: 4.1149505542580025

Pixel Size Y: 4.114950554258002

Band Count: 1

Pixel Type: U8

RasterFunction Infos: {"rasterFunctionInfos": [{ "name": "None", "description": "", "help": "" }]}

Mensuration Capabilities:

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text: DMR, ND GIS Hub

Service Data Type: esriImageServiceDataTypeProcessed

Min Values: 39

Max Values: 243

Mean Values: 126.47413248318831

Standard Deviation Values: 22.392480232114604

Object ID Field:

Fields: None

Default Mosaic Method: Northwest

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

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bilinear

Max Record Count: 1000

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: 20

Max Mosaic Image Count: 20

Allow Raster Function: true

Allow Copy: true

Allow Analysis: true

Allow Compute TiePoints: false

Supports Statistics: false

Supports Advanced Queries: false

Use StandardizedQueries: true

Raster Type Infos:

Has Raster Attribute Table: true

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

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

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