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Last change
on this file since 2023 was
2023,
checked in by dkearney, 14 years ago
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updates for video widgets
two new video dials
video chooser widget for selecting movies
video preview widget is a no frills movie player.
updated c code to more correctly report the last frame of the movie.
new video speed widget which allows for fractional values between 0x and 1.0x
updated piv/pve example application
fixed "release" function in tcl bindings for RpVideo?
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File size:
2.0 KB
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| 1 | <html> |
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| 2 | <body> |
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| 3 | <center> |
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| 4 | <h1>ParticleVE</h1> |
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| 5 | <h2>a particle tracking velocimetry tool</h2> |
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| 6 | </center> |
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| 7 | <p> |
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| 8 | Track particles in videos to calculate an estimate of |
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| 9 | their velocity. |
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| 10 | </p> |
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| 11 | |
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| 12 | <h3>What is Particle Velocity Estimation</h3> |
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| 13 | <p> |
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| 14 | <!-- text from wikipedia --> |
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| 15 | Particle tracking velocimetry (PTV) is a velocimetry method, i.e a technique to measure velocity of particles. The name suggests that the particles are tracked, and not only recorded as an image as it is suggested in another form, particle image velocimetry. There are two very different experimental methods: |
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| 16 | |
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| 17 | * the two dimensional (2D) modification of Particle Image Velocimetry (PIV), in which the flow field is measured in the two-dimensional slice of the flow, illuminated by a laser sheet (a thin plane) and low density of seeded particles allow for the tracking each of them individually for several frames. |
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| 18 | * the Three-Dimensional Particle tracking velocimetry (3D-PTV) is a distinctive experimental technique, based on multiple camera-system, three-dimensional volume illumination and tracking of flow tracers (i.e. particles) in three-dimensional space by using photogrammetric principles. |
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| 19 | </p> |
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| 20 | <h3>Get Started:</h3> |
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| 21 | <ol> |
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| 22 | <li>Choose a video to track particles in.</li> |
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| 23 | <li>Preview the video, searching for interesting frames.</li> |
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| 24 | <li>Mark particle locations and analyze the frames.</li> |
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| 25 | </ol> |
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| 26 | <center> |
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| 27 | <img src="images/pve_demo_small.png"/> |
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| 28 | </center> |
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| 29 | |
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| 30 | <h3>Practical Applications:</h3> |
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| 31 | <p></p> |
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| 32 | |
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| 33 | <h3>Learn More:</h3> |
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| 34 | <ol> |
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| 35 | <li><a href="http://wikipedia.org/wiki/Particle_tracking_velocimetry">Particle Tracking Velocimetry (PTV)</a></li> |
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| 36 | <li><a href="http://wikipedia.org/wiki/Particle_image_velocimetry">Particle Image Velocimetry (PIV)</a></li> |
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| 37 | </ol> |
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| 38 | </body> |
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| 39 | </html> |
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