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Virtual Me. Motion Capture The process of recording movement and translating that movement onto a digital model Originally used for military tracking.

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Presentation on theme: "Virtual Me. Motion Capture The process of recording movement and translating that movement onto a digital model Originally used for military tracking."— Presentation transcript:

1 Virtual Me

2 Motion Capture The process of recording movement and translating that movement onto a digital model Originally used for military tracking purposes and in sports as a tool for biomechanics research Used for entertainment business by giving computer animators the ability to make non-human characters more life-like

3 Human Body Parts Tracking Eye Tracking Finger Tracking Head Tracking Hand Tracking Arm Tracking Leg Tracking

4 Human Motion Capture Types 1.Mechanical Motion Capture – Using an exoskeleton – Each joint is connected to an angular encoder – The value of movement of each encoder is recorded by a computer – Pros: Not being influenced by external factors – Cons: Freedom of movement is limited Absolute positions are not known

5 Human Motion Capture Types (cont’d) 2. The Magnetic Motion Capture – Using an array of magnetic receivers which track location with respect to a static magnetic transmitter. – Pros: Data captured is accurate and no further calculations – Cons: Any metal object disturbs the magnetic field and distorts the data.

6 Human Motion Capture Types (cont’d) 3.Optical Motion Capture – Using reflective dots (markers) and several synchronized cameras – The cameras emit radiation (infrared), reflected by the markers and then returned to the cameras – Checking the information of each camera to determine the position of the marker – Pros: Free movement Very clean and detailed data – Cons: Reflective dots can be blocked, causing loss of data Rotations of body parts are not absolute and must be solved for

7 Market Survey Nintendo WII – Accelerometer – Optical sensors – Price:$199,99 – Limitation: Sony PlayStation EyeToy - WebCam -price: cam:$29.99, playstation2:$ feature: recognizes hand and body movements -Limitation:2D PhaseSpace - 4:24 Impulse cams - 20:100 impulse active LED -Price:$29, to $123, feature: full body motion tracing including figures using gloves

8 The Virtual Me Approach Markers Based using 2d video cams

9 Virtual Me Analysis Limitations – Invasive approach – User must remain within camera range

10 System Design

11 Image Processing Pipelines IPP(1)IPP(2)IPP(K) Marker Detector Merging Module Constraint module History Body Constructor Camera Interface

12 Time Plan Time plan

13 Tools Uses

14 Questions


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