Minimum Object Size
For Gen3+ data, no minimum object size filters are applied. The smallest features tend to be the most likely to be false positives, but a customer filtering for a minimum "confidence" of e.g. 70% or 90% is a better filter for false positives than size unless there is a meaningful minimum size that applies to a use case. For example, filtering out swimming pools less than 4 sqm will reduce the number of false positives, but also remove all small spas and paddling pools.
The table below defines the minimum attribute area for Gen 1 and Gen 2 data. Any object smaller than this minimum area is excluded from the AI data set. You may wish to impose additional minimum thresholds, for example to rule out garden sheds, or small paddling pools.
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| m2 | ft2 |
|---|
| Solar Panel | 3 | 32 |
|---|
| Swimming Pool | 4 | 43 |
|---|
| Building Footprint | 9 | 97 |
|---|
| Construction Site | 9 | 97 |
|---|
| Trampoline | 3 | 32 |
|---|
| Tree Overhang | 0 | 0 |
|---|