2008 Aerial Orthophotography of Wyandotte County, KS

Metadata:

• Identification_Information
• Data_Quality_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: M. J. Harden and Associates Inc.

Title: 2008 Aerial Orthophotography of Wyandotte County, KS

Description:

Abstract:

An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation has been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. For this dataset, six inch natural color digital orthoimages were produced for Wyandottw County, Kansas. Tile orthoimages were mosaicked and reprojected to State Plane Coordinate System, Kansas North, NAD83 datum to produce 24-Bit RGB 0.5 foot digital orthoimages in Geo TIFF format. Each orthoimage provides 5000 x 5000-foot ground coverage. There is no image overlap between adjacent files. The naming convention is based on the NAD 83 State Plane Kansas North, taking the coordinates of the NW corner of the orthoimage. Digital Orthophotographs are orthorectified aerial photographs. In this data set all of Wyandotte County Kansas was flown at an altitude of 4800' AMT and orthorectified with a resolution of 0.5 feet.

Purpose: Digital Orthos for Wyandotte County, Kansas

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20080325

Single_Date/Time:

Calendar_Date: 20080328

Currentness_Reference: ground condition

Status:

Progress: Complete

Keywords:

Theme:

Theme_Keyword_Thesaurus: digital orthophotography

Theme_Keyword: rectified photograph

Theme_Keyword: digital orthophoto

Theme_Keyword: aerial photograph

Theme_Keyword: digital orthophotography

Theme_Keyword: digital image map

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Kansas

Place_Keyword: Wyandotte County

Access_Constraints: None

Use_Constraints: See access and use constraints information.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

GeoSpatial Services, Unified Government of Wyandotte Co/Kansas City, KS

Contact_Address:

Address_Type: mailing and physical

Address: 710 N 7th St, Suite 200

City: Kansas City

State_or_Province: Kansas

Postal_Code: 66101

Country: US

Contact_Voice_Telephone: 913-573-2941

Contact_Facsimile_Telephone: 913-573-4106

Contact_Electronic_Mail_Address: gss@wycokck.org

Hours_of_Service: 8 am - 5 pm, Central Time

Native_Data_Set_Environment: Microsoft Windows XP; ESRI ArcCatalog 9.2 (Build 1380)

Data_Quality_Information:

Attribute_Accuracy:

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: Scan Resolution

Attribute_Accuracy_Explanation: 12 microns

Logical_Consistency_Report:

All imagery is visually inspected for completeness to ensure that no gaps, or image misplacement exist in the edge matched image sheets. The ortho images may be derived by mosaicking multiple images, in order to ensure complete coverage. Photo coverage for the 100 scale orthophotos consists of 19 flight lines with a total of 783 exposures flown at an altitude of 4,800 feet. Overlap between each exposure is 60% with a 30% sidelap between flight lines. Photography is natural color RGB. TIFF image sheets are edge matched. Dataset includes 605 orthophoto's with .tfw files for the 100 scale photography.

Completeness_Report: Yes. 216 tiles delivered.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Meets NMAS @ 1:100 scale, 90% of well defined points fall within 1/30 inch at publication scale (3.33 ft at ground scale).

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: MARC

Originator: MJ Harden Associates, Inc.

Publication_Date: unknown

Geospatial_Data_Presentation_Form: remote-sensing image

Source_Scale_Denominator: 0

Type_of_Source_Media: dvd

Source_Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20080320

Single_Date/Time:

Calendar_Date: 20080328

Single_Date/Time:

Calendar_Date: 20080325

Source_Currentness_Reference: ground condition

Source_Contribution: MJ Harden Associates, Inc.

Process_Step:

Process_Description:

The Digital Natural Color aerial imagery was acquired in Spring 2008 using a DMC sensor flown at a nominal height of 4800 feet AMT (Above Mean Terrain). Raw imagery post-processed as 8 bit color RGB using Intergraph's DMC PPS software. ABGPS data was also collected, supplemented by Ground Control using existing photo identifiable points (PID). The Digital Aerial Triangulation (DAT) was performed using softcopy workstations and Intergraph's ISPM software. Digital Elevation Models (DEM) (mass-points and break-lines) used to support ortho imagery production were created using standard photogrammetric collection techniques on Intergraph's soft copy workstations. The images were then ortho-rectified and using Intergraph's OrthoPro software. Color balancing was performed using both Intergraph's OrthoPro software and Orthovista. Seamless mosaicking was performed by automatic and manual seam line creation using Intergraph's IRASC software and then importing them into OrthoPro for mosaicking. Images were then color balanced again in order to match adjacent counties projects and quality controlled using Intergraph's IRASC, OrthoPro and Adobe PhotoShop software. The seamless mosaic was clipped into tiles using OrthoPro software. The imagery product deliverables are GeoTIFF images with embedded header information describing the required projection, pixel size, tile size and other related data and corresponding world files (.tfw). Control Surveys: Control planned and Surveyed by: MJ Harden Associates, Inc. 5700 Broadmoor Suite800 Mission, KS 66202. Control supplemented with Airborne GPS IMU and data from two base stations. US Survey Feet NAD 83 Kansas State Plane - Northern Zone - Grid NAVD 88

Process_Date: unknown

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Orthoimagery of Wyandotte County, Kansas

Entity_Type_Definition: Ortho Imagery

Entity_Type_Definition_Source: Aerial Photography

Attribute:

Attribute_Label: Order_ID

Attribute_Definition: Internal Feature Number

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: Value

Attribute_Definition: Internal Feature Number

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: Count

Attribute_Definition: Internal Feature Number

Attribute_Definition_Source: ESRI

Overview_Description:

Entity_and_Attribute_Overview:

24-bit pixels, 3 band color (RGB) represent brightness values 0 - 255.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

GeoSpatial Services, Unified Government of Wyandotte Co/Kansas City, KS

Contact_Address:

Address_Type: mailing and physical

Address: 710 N 7th St, Suite 200

City: Kansas City

State_or_Province: Kansas

Postal_Code: 66101

Country: US

Contact_Voice_Telephone: 913-573-2941

Contact_Facsimile_Telephone: 913-573-4106

Contact_Electronic_Mail_Address: gss@wycokck.org

Hours_of_Service: 8 am - 5 pm, Central Time

Distribution_Liability: See access and use constraints information.

Metadata_Reference_Information:

Metadata_Date: 20081204

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: MJ Harden

Contact_Person: Mark Sudduth

Contact_Position: Project Coordinator

Contact_Address:

Address_Type: mailing and physical

Address: 5700 Broadmoor

City: Mission

State_or_Province: KS

Postal_Code: 66202

Country: US

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time