Poses

[AndreCarlucci]

Hi guys,

Reading the docs, I see that you don't have "poses" anymore, just Gestures.

That way, we won't have the event that the pose is not "active" anymore.

Is this the way it's going to be for the 1.0 version of the SDK?

[Xusheng_L_Intel]

We do support poses(such as V-sign, spread finger, etc). What kinds pose do you want? Thanks!

[AndreCarlucci]

Hi David,

The perceptual sdk has 2 different things:

- poses: start event, end event

- gestures: on event

The realsense sdk has only one model: on event 

Is this the way it's going to be to all gestures/poses?

[Xusheng_L_Intel]

Yes, RealSense SDK combines gestures and poses together and all called gestures. 

[AndreCarlucci]

If I may put my two cents in, don't you think this would result in a more restrict set of actions? I think they are different (poses and gestures).

A pose example: a game where posing a "big five" creates a "shield" as long as the "big five" is hold.

A gesture could be swinging my hand to use my sword.

I know I can reproduce the pose behavior tracking all fingers state (I'm already doing that), and I know you probably have good arguments to merge them both, but I still think that it would be more intuitive to have poses (a state) and gestures (an action) separated.

Thanks.

[Xusheng_L_Intel]

Very good question. If you look at the GestureData

	struct GestureData 
	{
		pxcI64				timeStamp;					/// Time-stamp in which the gesture occurred
		pxcUID				handId;	    				/// ID of the relevant tracked hand, if relevant and known
		GestureStateType	state;						/// The state of the gesture			
		pxcI32				frameNumber;				/// The number of the frame in which the gesture occurred			
		pxcCHAR				name[MAX_NAME_SIZE];		/// Unique name of this gesture 		
	};

You can use state to track the gesture. The state can be following.

enum GestureStateType {
		/// Gesture started
		GESTURE_STATE_START=0			 
		, GESTURE_STATE_IN_PROGRESS	/// Gesture is in progress
		, GESTURE_STATE_END			/// Gesture ended
	};

Hope this will answer your question. Thanks!

[AndreCarlucci]

Great!

So gestures like swipe left will have only GESTURE_STATE_START or GESTURE_STATE_END?

[Xusheng_L_Intel]

Yes, and you can use those two states in your call back event. 

[Dagan_E_Intel]

Hi Andre,

In addition to David's comment, please note that when you enable gestures detection in the SDK, you have a flag that indicates if you want to receive only start/stop events, or get an event at every frame where the gesture is detected.

Indeed for moving gestures this doesn't make much of a difference, but for poses it can be useful

Cheers,

Dagan

[AndreCarlucci]

Thanks David and Dagan :)