Back to Critical Work Functions Click here for AEKS Matrix
Occupational Title: GIS Technician
Key Purpose: Creates software and data solutions to assist in the visualization, measurement, and analysis of features or phenomena that occur on the earth that integrates acquisition, modelling, analysis, and management of spatially referenced data.
Critical Work Function
2 Create Image Data 		Occupational Skills, Knowledge and Conditions
Key Activities
Performance Criteria
Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical work function.
Specific demonstrable performance and standards that indicate when the key activity has been performed successfully.
Those skills and knowledge that are specific to the occupation, such as technical processes or procedures common across the occupation that are critical to the related key activity.
Tools, resources and equipment necessary to carry out key activities and their related performance criteria.
KA2.1

 		Scan hard copy images into digital format.
Number
Criteria
2.1.1  Hard copy map is scanned with correct contrast, brightness, and at an appropriate resolution.
2.1.2  Hard copy map is scanned in an appropriate file format for use with GIS software.
GIS principles
Cartographic principles
Photogrammetry
Computer skills
Keyboarding skills

 		Scanners
Personal computer
Geographic information systems software
Image display and manipulation software
Geospatial imaging products
KA2.2

 		Geo-reference digital imagery.
Number
Criteria
2.2.1  Scanned hard copy map has locational information that places it in the correct geographic space.
2.2.2  Features on a georeferenced image coincide with features on the reference layer and are within the accuracy standards set forth by the project.
GIS principles
Photogrammetry
Computer skills
Keyboarding skills

 		Geographic information systems software
Image display and manipulation software
Geospatial imaging products
KA2.3

 		Rectify images to meet data standards.
Number
Criteria
2.3.1  The root mean square error of the rectified image is kept below the standard for the mapping scale.
GIS principles
Cartographic principles
Photogrammetry
General geography
Computer skills
Keyboarding skills

 		Image display and manipulation software
Geospatial imaging products
KA2.4

 		Perform image analysis (classification)
Number
Criteria
2.4.1  The outputs of the thematic raster layer should keep the commission and omission errors within acceptable limits and should include class values, class names and/or color table.
2.4.2  Vector data is created based on classification analysis.
2.4.3  Image classification conforms to the project standards.
2.4.4  Different types of surfaces are identified from remote sensing bands.
2.4.5
 		A field check of what was classified verifies that surfaces are correctly identified.
2.4.6
 		New vector layer derived from the reclassification accurately reflects field phenomena.
GIS principles
Photogrammetry
Database skills
Computer skills
Keyboarding skills

 		Personal computer
Geographic information systems software
Image display and manipulation software
Geospatial imaging products