Tracker on rollApp

Tracker is an image and video analysis package and modeling tool that is built upon the Open Source Physics Java code library.

Tracker Features:

Tracking:

Manual and automated object tracking with position, velocity and acceleration overlays and data.
Center of mass tracks.
Interactive graphical vectors and vector sums.
RGB line profiles at any angle, time-dependent RGB regions.

Modeling:

Model Builder creates kinematic and dynamic models of point mass particles and two-body systems.
External models animate and overlay multi-point data from separate modeling programs such as spreadsheets and Easy Java Simulations.
Model overlays are automatically synchronized and scaled to the video for direct visual comparison with the real world.

Data generation and analysis:

Fixed or time-varying coordinate system scale, origin and tilt.
Multiple calibration options: tape, stick, calibration points and/or offset origin.
Switch easily to center of mass and other reference frames.
Data include units (SI metric units by default, settable length and mass units).
Protractors and tape measures provide easy distance and angle measurements.
Circle fitter tool fits circles to 3 or more points, steps or tracks.
Define custom variables for plotting and analysis.
Add editable text columns for comments or manually entered data.
Data analysis tool includes powerful automatic and manual curve fitting.
Export formatted or raw data to a delimited text file or the clipboard.
Display measured values using custom number formats if desired.

Other:

Integrated searchable help and diagnostics.
Full undo/redo with multiple steps.
Page view displays html instructions or student notes.
Annotate videos with colored line drawings and labels.
User preferences: GUI configuration, video engine, default language, font size, more.

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