Single Tap gesture detection based on simple analysis (MAD) of range (single ToF device) More...

Data Structures
struct	Gesture_TAP_1_Data_t
	Data structure for single tap gesture detection. More...
Functions
int	tof_gestures_initTAP_1 (int MinBackGroundDistance, Gesture_TAP_1_Data_t *data)
	Initialize gesture data.
int	tof_gestures_detectTAP_1 (int32_t range_mm, Gesture_TAP_1_Data_t *data)
	Detect gesture.

Detailed Description

Single Tap gesture detection based on simple analysis (MAD) of range (single ToF device)

Description: This tof_gestures module allows to detect in a very robust way a single TAP (flat hand going down) with a single ToF device. Returned gestures code are one of the following ones : GESTURES_SINGLE_TAP or GESTURES_NULL in case no TAP is detected.

Algorithm Description: The approach consists in collecting __range__ samples when a target (hand) is detected by the ranging device. Then, MAD (Mean of Absolute Difference versus the mean) is calculated and TAP gesture is detected based on a threshold. Some false TAP detections could happen in case a target is detected in the background (behind the han). To avoid these false detections, set the MinBackGroundDistance to the minimum distance a background target can be detected in the application. If no background, set MinBackGroundDistance to a big value

Function Documentation

Detect gesture.

Returns:: One of these gestures code from Gestures_Code_t : GESTURES_SINGLE_TAP or GESTURES_NULL

Warning:: This function must be called all the time, even if no valid range_mm is available from the ToF device. In that case, call the function with the typical max ranging capability of the device

Definition at line 51 of file tof_gestures_TAP_1.c.

Initialize gesture data.

Definition at line 39 of file tof_gestures_TAP_1.c.