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CameraScope
A Digital Visualization tool for Science and MathematicsClassrooms
Bill FersterThe University of Virginia
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Why Visualization?
To help see events that are too small
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Why Visualization?
To see events that are too fast or slow
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A Tipping-Point
• Low cost of digital camera and webcams
• More digital cameras are sold than film cameras
• Even Kodak is giving up on film cameras!
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Student’s Understanding
Role shift from passive observer to active participant
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Intel QX3 Microscope
Popular, with lots of curricular activities developed
• Cheap (under $100)• Easy to use• Had time-lapse movies capability
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Intel QX3 Microscope
It had shortcomings, though...
• Poor image quality• Toy-like software• Discontinued by Intel after the “Dot-Bomb”
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Why Make CameraScope?
Support of Multiple Imaging Sources
• Web-Cams, QX3, Digital Cameras • High quality images• New devices on the market constantly • Consistent “look and feel” to standardize curriculum on• Uses Microsoft’s DirectShow devices
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Why Make CameraScope?
Designed Expressly for Education
• Easy to use• Features tied into curriculum• Lesson plans expressly designed for it• Offered at no charge to schools
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Why Make CameraScope?
An optimistic future
• Can’t be capriciously discontinued• Open source• Open architecture for new features• Supports commonplace tools
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CameraScope
First tool from Thinking Spaces Tools Initiative
• Capture• Measure• Analyze
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Capture
CameraScope Image Sources
• High quality from digital cameras• QX3 Microscope• Digital Microscopes• Digital Telescopes• Web-Cams
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Capture Stills
CameraScope Still Images
• Multiple resolutions• Stored as JPEG Files
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Capture Time-Lapse
CameraScope Time-lapse movies
•Speeds up slow events •1/4 second to 10 days per frame
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CameraScope Capture
Viewing screen
Image Gallery
Capture button
Controls
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Capture Real-Time
CameraScope Real-Time Movies
• Slows down fast events • View the Motion frame-by-frame
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Measure
CameraScope Measurement Tools
• Measure on screen objects• Get position, size and rotation• Move through movies frame by frame
• Calibrate to real world dimensions• Easy to use, but accurate
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CameraScope Measure
Reset Origin
Scroll thru Movie
See Coords
Calibrate
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Analyze
CameraScope Analysis Tools
• Saves data to spreadsheet • Calls Microsoft Excel directly for:
• Graphing• Trend-line analysis• High-level manipulation
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Excel Spreadsheet
Time (in ms.)
X Position
Y Position
Scale
Rotatation
Graph
Trend Line
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A Physical Science Example
Measuring the speed of gravity
• Helps students understand velocity in Physics • Record the dropping of a ball• Calibrate the image to meter stick in scene• Track motion of ball frame-by-frame into Excel file• Graph Velocity curve in Excel• Use trend-line analysis to figure out gravity constant
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A Physical Science Example
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A Physical Science Example
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Future Tools
• Image processing add-ons for CameraScope
• Tablet PC Software
• Digital Story-Telling tools
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Thinking Spaces
• Research into digital images in content area curricula
• Emerged from National Technology Leadership Summit
• CameraScope developed by University of Virginia
• All tools placed in a “Creative Commons”
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StatusCurrently in in beta
Available at no charge.
Website: www.teacherlink.org/tools