GIS Digitizer, Rice Field Boundary Polygons
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Job Description
Remote GIS Digitizer mapping rice-field and plot boundaries for ICRAF’s GCF Knuckles Project. Producing accurate polygon datasets for AgriLook integration under strict QA/QC standards.
Responsibilities:
- Develop an accurate, consistent, and quality-controlled geospatial database of rice field and plot boundaries within designated GCF Knuckles Project areas
- Digitize individual rice fields and plot boundaries from designated reference imagery and datasets
- Produce topologically correct and spatially accurate polygon datasets
- Follow ICRAF digitization protocols and standardized attribute structures
- Maintain consistency among multiple GIS operators
- Prepare field-level spatial data for integration with the AgriLook platform and related applications
- Review satellite imagery, Google Earth imagery, cadastral borders, and AI-survey area layers supplied by ICRAF
- Digitize each distinct field as a closed polygon in the specified GIS format
- Populate required polygon attributes
- Cross-check boundaries against ground/field survey points where assigned
- Submit digitized polygon batches according to the agreed schedule
- Correct and resubmit polygons rejected during QA review at no additional cost
- Maintain a digitization log covering area/tile, date, and number of polygons submitted
- Apply digitization standards preventing overlaps, slivers, self-intersections, and duplicates
- Complete automated geometry, topology, CRS/format, and attribute checks
- Incorporate manual quality-review feedback and obtain QA sign-off before batches are accepted and payable
Requirements:
- Qualified GIS digitizer
- Ability to digitize rice fields and plot boundaries from high-resolution satellite imagery, basemaps, Google Earth imagery, cadastral borders, and AI-survey layers
- Ability to produce topologically correct and spatially accurate polygon datasets
- Ability to follow standardized digitization protocols, field delineation rules, topology rules, attribute structures, and project GIS standards
- GIS proficiency with Shapefile, GeoJSON, and GeoPackage formats
- Ability to populate required attributes, including field ID, administrative/GN division, land-use type, source imagery date, and digitizer ID/date
- Ability to apply the specified coordinate reference system (CRS), such as WGS84 / SL national grid
- Ability to perform geometry validity, topology, CRS/format, and attribute completeness checks
- Ability to maintain digitization logs and submit batches through the designated platform/folder structure
- Ability to cross-check boundaries against ground/field survey points where assigned
- Ability to correct and resubmit non-conforming polygons
- Ability to work according to the project's minimum mapping unit and positional accuracy tolerance
Benefits:
- Output-based payment model; batches are payable after QA sign-off and acceptance
- Corrective resubmission of rejected polygons at no additional cost before payment acceptance
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