feat: add handle dont draw if no tumor

Update app.py

Update app.py

Update app.py

Update app.py

Update app.py

Update app.py

jndfksnsdfksndfjknsdkfnsdk

fix: add change ratio from pixel to cm

fix: impor math

debug

debug

refactor: output inference volume

feat: add route to count volume using math

fix: try to reduce the confidence threshold

refactor: change response to image and detections

feat: init fastapi