Terrestrial remote sensing toolkit

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BRG The University of Queensland
Fundamentals

- Main page
- Pre-processing
- Field data collection
- Mapping approaches
- Change and trends
- Delivery
  - Post classification
  - Error assessment
    - Sampling design
    - Reference data
    - Error matrix
    - Accuracy measures
    - Quantitative products
    - Interpreting accuracy
  - Final map creation

# Interpreting mapping accuracy

### General considerations for interpreting mapping accuracy

Accuracy can only fully be understood and compared when:

- The full sample design is known, as this can influence the outcome

When comparing over all and individual class error and accuracy levels:

- Sampling design needs to be similar
- Mapping approaches need to be similar and classes need to be the same

### Important considerations when assessing thematic accuracy:

- Overall accuracy is most commonly reported
- Overall accuracy > Tau accuracy > Kappa accuracy
- Accuracy varies with area size, number of mapping categories and/or sensor type.