Application
This unit of competency specifies the outcomes required to enhance and process image data using digital techniques. The unit covers using remote sensing software to manipulate, enhance, classify and process data to reveal geographic patterns and relationships and improve resolution. Image data can be digital, multispectral scanner, or radar. Platforms can be aircraft, unmanned aerial vehicles or satellites at low to high altitudes. The unit requires assessing the survey area and project specifications to determine the types and possible sources of image data to meet requirements.
The unit supports those who work in a spatial information services team in support positions, such as image analyst, geographic information system (GIS) analyst, GIS officer, or cartographer.
No licensing, legislative, regulatory, or certification requirements apply to this unit of competency at the time of endorsement.
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions. | ||
1. | Identify image data. | 1.1. | Project specifications, survey area and types of image data requirements are determined in consultation with appropriate persons. |
1.2. | Possible sources of image data are identified to meet project specifications. | ||
1.3. | Constraints of different types and formats of image data are identified in relation to project specifications. | ||
2. | Process image data. | 2.1. | Image data is accessed and analysed using digital techniques to clarify features and properties according to project specifications. |
2.2. | Ground control targets for photogrammetric mapping are checked to enhance image data. | ||
2.3. | Image data is processed, analysed and classified according to organisational procedures to achieve project specifications. | ||
3. | Finalise digital image enhancement tasks. | 3.1. | Data image problems are identified and resolved using enhancement techniques according to organisational requirements. |
3.2. | Information from data images is used to meet project specifications, and documentation is completed according to organisational requirements. |
Evidence of Performance
A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria, foundation skills and range of conditions of this unit. The person must also use remote sensing applications to digitally enhance, process and classify two of the following types of image data for two different projects:
digital aerial photographs
digital terrestrial images
images from an unmanned aerial vehicle
light detection and ranging (LiDAR)
satellite images.
One of the above projects must have a built environment focus, and the other a natural environment focus.
While digitally enhancing and processing the above image data, the person must:
analyse project specifications to clarify types of image data required and to identify possible sources of suitable image data
apply ground controls to aerial photographs
calculate information in digital and hard copy image data to measure and identify scale
communicate clearly with others to clarify and discuss work tasks
comply with industry-accepted standards for processing remotely sensed data
comply with legislative and organisational requirements relating to data privacy and information copyright
comply with organisational requirements relating to health and safety when using screen-based equipment, and completing records and documentation
georeference images
identify and resolve constraints and problems relating to image data
identify ground controls, including targets for horizontal and vertical control
use software applications to access, analyse and enhance image data.
Evidence of Knowledge
A person demonstrating competency in this unit must demonstrate knowledge of:
basic properties and characteristics of image data used in spatial applications
key features of spectral signatures, discriminant functions, supervised and unsupervised clustering, and ground trothing
organisational policies and guidelines relating to equipment use, health and safety, and accessing and formatting image data and copyright
photogrammetric control requirements relating to three-dimensional (3-D) model image data
possible sources of image data
set-out and format requirements for image data
techniques for enhancing image resolution, including basic interpolation.
Assessment Conditions
The following must be present and available to learners during assessment activities:
equipment:
computer and software with image enhancement functionality
specifications:
task specifications
organisational policies and procedures relating to:
work health and safety
data privacy and information copyright
physical conditions:
access to equipped workstation
relationships with team members and supervisor:
working in a team.
Timeframe:
as specified by project requirements.
Assessor requirements
As a minimum, assessors must satisfy the assessor requirements in the Standards for Registered Training Organisations (RTOs) current at the time of assessment.
Foundation Skills
This section describes the language, literacy, numeracy and employment skills essential to performance in this unit but not explicit in the performance criteria. | |
Skill | Performance feature |
Learning skills to: | conduct research to identify image data sources. |
Numeracy skills to: | calculate scale of image data solve problems relating to area, height, depth, dimension, direction and position in actual operational activity and virtual representation. |
Oral communication skills to: | ask questions to clarify data image requirements. |
Reading skills to: | interpret graphical and technical information, including shapes and patterns within digital images. |
Writing skills to: | record clear and accurate measurements and computations. |
Technology skills to: | use a computer and software to manipulate and enhance image resolution. |
Range Statement
This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below. | |
Appropriate persons must include at least one of the following: | client experienced colleague supervisor or line manager. |
Sectors
Surveying and spatial information services