Table 4.

Comparison based on the requirements in the hospital environment for different types of sensing technologies. The annotations (+/−/--) represent the intensity of the recommendation.

Requirement	IMU-based	Camera-based: RGB	Camera-based: IR/thermal	Mattress-based	Radar-based	Signal-reusing
Being able to detect 1D gross motion (general gross motion)	+	+	+	+	+	+
Being able to detect 2D/3D gross motion patterns (also determine limb motion)	+	+	+	–	- -	- -
Being able to detect fine motion patterns	+	+	+	+	–	–
Minimal disturbance to the patient	- -	+	+	+	+	–
Being able to function in low-light conditions	+	- -	+	+	+	+
Being able to function in caregiving moments	+	- -	- -	–	- -	–
Being able to function if the incubator/patient is covered	+	- -	- -	+	–	+
No risk of skin damage	- -	+	+	+	+	–
No electrical risk to the patient	–	+	+	–	+	–
No possible risk of electromagnetic radiation exposure	–	+	+	–	–	–
No compromise to patient privacy	+	- -	–	+	+	+