gesture-recognition

How to do Gesture Recognition using Accelerometers

My goal is to recognize simple gestures from accelerometers mounted on a sun spot. A gesture could be as simple as rotating the device or moving the device in several different motions. The device currently only has accelerometers but we are considering adding gyroscopes if it would make it easier/more accurate. Does anyone have recomm...

How does gesture recognition work?

In a multi-touch environment, how does gesture recognition work? What mathematical methods or algorithms are utilized to recognize or reject data for possible gestures? I've created some retro-reflective gloves and an IR LED array, coupled with a Wii remote. The Wii remote does internal blob detection and tracks 4 points of IR light a...

Detect Finger Swipe in .Net Compact Framework

Looking for a way to detect finger gestures in my Windows Mobile applications. Main goal: detect when user gestures a left or right swipe across the screen. Similar to the swipe motion used to unlock an iPhone. ...

How can I implement a circular scrolling mechanism?

I'm having some images from which the user should choose one. Now I don't want to just offer an flat scrolling area with a boring grid. Instead, I'd like to show up a wheel that contains those images. At the top would be a marker indicating the selection. Something similar to the Pickers. The problem is not the rotation stuff; I'd use s...

Android - basic gesture detection

I've been battling to get 'fling' gesture detection working on my Android application today. I've been looking at these sources; Detect Gestures - Tutorial SDK docs Calculator Code Nothing has worked for me so far and I was hoping for some pointers. What I have is a 'GridLayout' that contains 9 ImageViews. The source can be found he...

How to do pinch gestures on the iPhone?

How does one implement pinch gestures on the iPhone? I'm familiar with using touch events on the iPhone but I'm extremely lazy and don't want to re-invent the wheel for something as widespread as PINCH gestures...Source code or links thereto would be helpful. ...

Intercepting/Hijacking iPhone Touch Events for MKMapView

Is there a bug in the 3.0 SDK that disables real-time zooming and intercepting the zoom-in gesture for the MKMapView? I have some real simple code so I can detect tap events, but there are two problems: zoom-in gesture is always interpreted as a zoom-out none of the zoom gestures update the Map's view in realtime. In hitTest, if I r...

Blackberry Storm Emulator - TouchGesture events not firing, how to get a Swipe to work?

Been playing with the Storm Emulator and the 4.7 JDE, for the life of me I can't figure out how to fire gesture events in the emulator. Below is the touch event code for the RIM sample app EmbeddedMapDemo. It seems straightforward enough, but touchGesture.getEvent() == TouchGesture.SWIPE never seems to register to true. How can I regis...

What is gesture in Android.

I would like to know what is meant by gestures in typical mobiles more specifically android ones. Android supports gesture recognition. Is a gesture termed as when user holds the device and shakes it(say upwards, downwards or side- side)? Is a gesture termed as when a finger is placed on the screen and traced UP,DOWN,RIGHT,LEFT? If so ...

Favorite technique for hand gesture recognition

There is a lot of research going on about gesture recognition. I figured I would narrow this down to the topic of hand gesture recognition (i.e. stationary hand positions, up to as complex and dynamic as sign language recognition). Considering the image processing techniques available in real-time, such as blob detection, edge detection...

Two-finger rotation gesture on the iPhone?

I'm working on an iPhone app with a lot of different gesture inputs that you can do. Currently there is single finger select / drag, two finger scroll, and two finger pinch zoom-in / zoom-out. I want to add in two finger rotation (your fingers rotate a point in between them), but I can't figure out how to get it to work right. All the ot...

Recognizing patterns when drawing over the iPhone screen.

Hey. I'm trying to write a game where the user can issue commands by drawing certain patters with his fingers..for example, if he draws a circle, an 'S' letter, an expiral, ect. I'm already familiar with touch events and I'm capable of reading the coordinates... my problem Is in finding algorithms and information about the recognition ...

How do I determine whether a number is within a percentage of another number

I'm writing iPhone code that fuzzily recognizes whether a swiped line is straight-ish. I get the bearing of the two end points and compare it to 0, 90, 180 and 270 degrees with a tolerance of 10 degrees plus or minus. Right now I do it with a bunch of if blocks, which seems super clunky. How to write a function that, given the bearing 0...

Performance impact of gesture recognition in Delphi?

Delphi 2010 reportedly supports gestures for user interaction (mouse or touch interface), primarily through the Windows 7 gesture API. Will supporting gestures inherently incur a major performance hit? In other words, is most of the gesture-related processing due to detection, or response to, the gesture? By "response to", I mean the ...

Can you make custom events with UIControlEventApplicationReserved?

I have written a subclass of UIControl that tracks a number of gestures that are of interest to me. In the documentation for the UIControlEvents enumeration, it says that there is a range of event numbers called UIControlEventApplicationReserved that is "available for application use." Does this mean that I am free to use this range of...

Suggestions for techniques for hand gesture recognition?

I am making a project on hand gesture recognition. I am storing a pre captured gestures of hand in a folder and then I'm capturing gestures from the webcam and storing it in the other folder. I am not using a database now and I am not able to compare the images from both the folders to get the correct gesture. What should i do? How s...

How to listen for gesture detector events from a seperate thread in android game

Hi, I am trying to make an android game. Originally I did not have a separate thread to draw my game on the screen everything worked fine including listening for gestures. But I found that I could not do animation so I have implemented a separate thread that handles drawing my game on the screen. It is based on the Luna Lander exampl...

Mouse Gesture Libraries for .Net?

Are there any half decent mouse gesture libraries for .Net? Have found very few and no decent ones. ...

How to detect a two finger flick

I want to switch between a couple views with a flick gesture using two fingers. If anyone can tell me what I need to do please help. ...

What are gestures in android?

Can anyone explain me about gestures? What are their use? Can u tell me any practical ideas where we can implement them? ...