3D Scanning Course

Lesson 1 • Selecting the Right Scanner

Applies a decision framework based on object size, material, environment, and budget. Prepares students to justify hardware choices in professional contexts.

Lesson 2 • Accuracy, Resolution, and Noise

Distinguishes accuracy, precision, resolution, and noise as independent metrics. Students interpret scanner spec sheets critically after this section.

Lesson 3 • Scanner Hardware Categories

Surveys contact, structured-light, laser, and photogrammetry-based systems. Students map hardware categories to accuracy, range, and cost tradeoffs.

Lesson 4 • Light and Geometry Principles

Covers how light reflection, refraction, and triangulation enable distance measurement. Provides the physics foundation needed to understand every scanner type.

Lesson 1 • Handling Difficult Surfaces

Addresses reflective, transparent, and dark surfaces using sprays, polarisation, and exposure tuning. Expands the range of objects students can successfully scan.

Lesson 2 • Structured-Light System Components

Identifies projector, camera, and calibration board roles within the system. Understanding component interaction is prerequisite to calibration and capture.

Lesson 3 • Capturing and Aligning Scans

Executes multi-angle capture sequences and performs initial alignment using markers and geometry. Alignment quality gates all downstream mesh processing.

Lesson 4 • Calibration Procedures

Walks through factory and field calibration workflows to maintain accuracy. Proper calibration directly determines scan quality throughout the chapter.

Lesson 1 • Terrestrial Laser Scanner Setup

Establishes tripod levelling, scan station planning, and target placement for room-scale capture. Station planning determines registration accuracy for large scenes.

Lesson 2 • Field Documentation and Metadata

Records scan conditions, station logs, and project metadata for reproducibility and handoff. Professional documentation habits are established here for all future projects.

Lesson 3 • Registration and Point Cloud Assembly

Performs target-based and cloud-to-cloud registration to merge multiple scan stations. Registration error analysis is introduced as a quality control step.

Lesson 4 • Laser Scanner Types and Specs

Differentiates line, area, and time-of-flight laser scanners by range and accuracy class. Spec comparison skills transfer directly to scanner selection decisions.

Lesson 1 • Photogrammetry Theory and Pipeline

Explains feature detection, sparse reconstruction, and dense matching as sequential pipeline stages. Theory understanding prevents common pipeline failures downstream.

Lesson 2 • Camera and Lens Selection

Evaluates sensor size, focal length, aperture, and shutter type for photogrammetry suitability. Camera choice directly impacts reconstruction accuracy and texture quality.

Lesson 3 • Accuracy and Scale Validation

Uses scale bars, GCPs, and check points to validate and improve model accuracy. Validation methods apply to all photogrammetry projects regardless of scale.

Lesson 4 • Capture Planning and Execution

Designs overlap patterns, lighting setups, and ground control point layouts for reliable reconstruction. Systematic capture eliminates the most common reconstruction failures.

Lesson 1 • Quality Assessment and Reporting

Measures coverage, density maps, and registration residuals to certify dataset quality. Formal QA reporting is required in professional and contractual deliverables.

Lesson 2 • Noise Filtering Techniques

Applies statistical outlier removal, radius filtering, and bilateral smoothing to raw clouds. Filtering decisions balance noise removal against geometric detail preservation.

Lesson 3 • Point Cloud Data Formats

Surveys LAS, LAZ, E57, PLY, and XYZ formats including metadata storage and compression. Format literacy prevents data loss during software handoffs.

Lesson 4 • Downsampling and Decimation

Reduces point density using voxel grid and farthest-point sampling without losing geometry. Efficient datasets accelerate all downstream mesh and analysis workflows.

Lesson 1 • Texture and Colour Mapping

Projects photographic colour onto mesh geometry via UV unwrapping and texture baking. Textured meshes are required for visualisation, AR, and digital twin applications.

Lesson 2 • Mesh Export and Format Standards

Exports meshes in OBJ, STL, FBX, GLTF, and PLY formats matched to downstream application needs. Format and unit settings prevent errors in CAD, print, and game pipelines.

Lesson 3 • Mesh Repair and Healing

Identifies and fixes holes, non-manifold edges, duplicate faces, and inverted normals. Clean topology is mandatory before any downstream use of the mesh.

Lesson 4 • Meshing Algorithm Fundamentals

Compares Poisson, ball-pivoting, Delaunay, and marching cubes reconstruction methods. Algorithm selection determines mesh quality for specific geometry types.

Lesson 1 • Feature Extraction from Meshes

Detects planes, cylinders, spheres, and freeform surfaces automatically and manually from mesh data. Extracted features become the geometric primitives for parametric modelling.

Lesson 2 • Freeform Surface Reconstruction

Fits NURBS and subdivision surfaces to organic scan geometry for Class-A surface quality. Freeform methods are essential for consumer products and ergonomic components.

Lesson 3 • Reverse Engineering Workflow Overview

Maps the full pipeline from raw scan to parametric CAD model including decision points. Understanding the full workflow prevents rework caused by early-stage errors.

Lesson 4 • Dimensional Inspection and GD&T

Compares CAD nominal geometry against scan data to measure deviations and report GD&T. Inspection reporting closes the quality loop between manufacturing and design.

Lesson 1 • Large-Scale AEC Scanning Projects

Plans and executes building and infrastructure scans for BIM, renovation, and as-built documentation. AEC projects require coordinated station networks and georeferenced deliverables.

Lesson 2 • Industrial and Manufacturing Applications

Applies scanning to quality control, tooling verification, and reverse engineering in production environments. Industrial workflows require tight tolerances and integration with QC systems.

Lesson 3 • Deliverable Packaging and Presentation

Packages point clouds, meshes, reports, and interactive viewers into professional client deliverables. Presentation quality directly influences client satisfaction and repeat business.

Lesson 4 • Project Planning and Scoping

Develops project briefs, risk registers, equipment lists, and time estimates for scanning engagements. Thorough scoping prevents scope creep and budget overruns on client projects.