Table 3. The important distance.
| Scenario | The distance between the PT camera and the lecturer (m) | The range of the lecturer’s movement (m) |
|---|---|---|
| Conference room | 1.2 | 3.0 |
| Laboratory | 1.5 | 4.2 |
| classroom | 1.8 | 4.8 |
| Scenario | The distance between the PT camera and the lecturer (m) | The range of the lecturer’s movement (m) |
|---|---|---|
| Conference room | 1.2 | 3.0 |
| Laboratory | 1.5 | 4.2 |
| classroom | 1.8 | 4.8 |