# Subject contour for nose-tail base detection

Aim

To optimize the shape of the detected subject, so that the body points are correctly found.

Procedure

▪When you use one of the following methods for detecting the body points, Any species / Default, or Adult Fish / For occlusions, make sure the tail is fully detected as part of the subject.

▪When you use a Rodents method (Default or For occlusions), it is best to remove detection of the rodent’s tail. See Advanced detection settings: Subject contour

Notes

▪When you track fish from above, the tail-base point is not positioned on the tail fin, rather more towards the mid-point. That is normal and is not a sign of bad detection.

See also

▪Advanced detection settings: Subject contour

▪Subject size for nose-tail base detection