21-08-2014, 04:36 PM
Motion Capture using Microsoft Kinect Seminar Report
Motion Capture using.pptx (Size: 875.05 KB / Downloads: 21)
Introduction
Kinect is a motion sensing input device by Microsoft for the Xbox 360 video game console and Windows PCs. Based around a webcam-style add-on peripheral for the Xbox 360 console, it enables users to control and interact with the Xbox 360 without the need to touch a game controller, through a natural user interface using gestures and spoken commands.
Nintendo Wii
The Wii Remote has the ability to sense acceleration along three axes through the use of an ADXL330 accelerometer. The Wii Remote also features a PixArt optical sensor, allowing it to determine where the Wii Remote is pointing
Playstation Move
Inside the ball is an RGB LED, which means the sphere can light up with practically any color.
The ball's primary function, however, is providing a visual reference for the PlayStation Eye. The PlayStation Eye is a USB camera that plugs into the PlayStation 3 system and captures video at a resolution of 640x480 at 60 frames per second. Those specifications translate into a very quick response time, meaning actions the PlayStation Eye perceives are displayed on the screen with minimal delay or lag
Working
The Depth Sensor
Basically the Kinect appears to be a 640×480 30fps second video camera that knows the *depth* of every single pixel in the frame. It does this by projecting a pattern of dots with a near infrared laser over the scene and using a detector that establishes the parallax shift of the dot pattern for each pixel in the detector
Speech Recognition
Kinect uses Four directional 16KHz microphones, which are angled towards different parts of its 180-degree field of vision, use noise-cancelling technology (calibrated during an initial setup process) to filter noise from games and the environment. The mics can distinguish different players using positional techniques
Kinect can compare the relative strength of the voice signals it receives through its four microphones to determine which person has yelled out the answer first
Conclusion
The Kinect sensor offers an unlimited number of opportunities for old and new applications. This seminar only gives a taste of what is possible. Thus far, additional research areas include Hand-gesture recognition, human-activity recognition, body biometrics estimation (such as weight, gender, or height),3D surface reconstruction, and healthcare applications