AI + Human-in-the-Loop · ArcGIS Parcel Fabric
From scanned plats to
Parcel Fabric-ready records
MTerra pairs purpose-built AI with Magnasoft's cadastral experts to turn scanned plats, historical maps, and new development records into validated, ArcGIS Parcel Fabric-ready parcel data — machine speed with survey-grade confidence.
Two old options. Neither one scales.
For decades, counties have had only two ways to convert cadastral records — and the backlog kept growing. MTerra's breakthrough is to combine the speed of AI with the judgment of experts.
MTerra: AI + human-in-the-loop
AI does the heavy lifting. Magnasoft's experts make the call.
1. AI detects
Boundaries, lot lines, COGO values, bearings, parcel numbers, symbols
Flags anything uncertain
2. Expert verifies
Magnasoft's cadastral team reviews, corrects, and confirms every flag
Nothing ships unverified
Why it's different: MTerra isn't automated tracing, and it isn't outsourced manual digitization. It's an AI + human-in-the-loop workflow engineered specifically for cadastral data — built to produce parcel records you can review, trace, and defend.
A real subdivision plat, end to end
A recorded subdivision plat — from scanned paper to production-ready parcels.
Start with the scanned plat
Thousands of subdivision plats exist only as paper archives. A county uploads the scanned image — no pre-processing, no manual prep.
AI detects every feature
Computer vision classifies boundaries, lot lines, points, textboxes, and COGO values automatically — flagging anything it isn't sure about for review.
Experts review and correct
Magnasoft's GIS experts resolve flagged items — missing segments, undetected origins, unreadable values — directly in the editor before anything is committed.
Adjusted to the legal record
A least-squares cadastral adjustment aligns geometry to the legal plat dimensions. Legal values are the source of truth — never inversed from geometry — with F-test and W-test checks.
Appended to production Parcel Fabric
Output is delivered as an LADM-conformant File Geodatabase and appended to the authoritative ArcGIS Parcel Fabric — lots with COGO dimensions, bearings, and stated areas, ready for every downstream client.
What's inside MTerra
Seven AI-driven steps, a human review checkpoint, and Parcel Fabric-ready delivery — so the AI + HITL model is visible at every stage.
AI-Assisted Vectorization
Converts scanned plats, field sketches, maps, and raster records into vector parcel data.
Boundary & Line Detection
Detects parcel boundaries, connected lines, points, and geometry from image-based records.
COGO & Measurement Extraction
Extracts bearings, distances, dimensions, and annotations used in cadastral reconstruction.
Parcel & Attribute Detection
Identifies parcels, lot numbers, labels, and related attributes from the source record.
Symbol & Text Recognition
Reads map symbols, text boxes, and annotations needed for accurate review.
Human-in-the-Loop Review
Keeps trained analysts in the workflow — so the output is verified, not just machine-traced linework.
Least-Squares Adjustment
Reduces measurement discrepancies and improves consistency across geometry and control points.
Coordinate Adjustment & Edge Matching
Aligns parcels with accepted coordinate systems and matches adjoining boundaries for a cleaner fabric.
Parcel Fabric-Ready Output
Verified parcel data delivered ready for ArcGIS Parcel Fabric.
By the numbers
Processing time per subdivision, vs. days of manual work
Estimated reduction in processing cost
Geometry 100% true to legal records — driven by legal dimensions
- A genuinely new approach. AI + human-in-the-loop replaces the old choice between slow manual digitization and unreliable automation.
- Collapses processing time — days to minutes. What took one to several days per subdivision is completed in minutes.
- Cuts cost by an estimated 80–90%. AI-assisted extraction turns days of digitization into hours of review.
- 100% true to legal records. Dimension-driven geometry adjusted to the legal plat tolerances — never inversed from geometry.
- Clears historical backlog. Systematically work down thousands of undigitized plats.
- Supports active development. Move new plats and parcel changes into GIS before they become the next backlog.
- Improves data quality. Automated COGO extraction eliminates manual-entry errors.
- Strengthens defensibility. Traceable validation produces records you can review, trace, and defend.
- Frees skilled staff. Analysts move from repetitive tracing to review and higher-value work.
- Supports Parcel Fabric modernization. Structured, validated parcel data ready for ArcGIS Parcel Fabric workflows.
One workflow, every land-records stakeholder
GIS Directors
A practical way to reduce parcel backlog and support ArcGIS Parcel Fabric adoption.
Parcel Fabric Teams
Validated parcel data that's cleaner before it reaches production.
County Assessors
More reliable boundaries for assessment, ownership, and tax workflows.
Planning Departments
Better visibility into new subdivisions, growth areas, and planned development.
Land Records Teams
A faster path from recorded plats and sketches to usable GIS data.
Survey & Cadastral Teams
Support for COGO values, legal dimensions, coordinate checks, adjustment, and geodetic validation.
Put AI + human-in-the-loop to work on your parcel records.
MTerra is delivered by Magnasoft — bringing AI-assisted plat digitization to ArcGIS Parcel Fabric. Let's talk about clearing your backlog and keeping your parcel system current.