Dear all
Are there any softwares/algorithms for partice tracking velocimetry. I have video files and sensor text file (angular and linear movement accelerometer). I wanted to know, considering mentioned input (video file and txt file of sensor), is there any softwares that can give me velocity? I found some codes and softwares which they were based on images not videos or sensor files.
Thanks in advance
I am assuming that your video files have the motion of the particles on them. Considering that the streaming can be seen as a temporal sequence of images, you can use the difference between subsequent image frames to identify the relative position of particles. If you know the pixel spacing (spatial sampling) of the image acquisition, you can estimate the velocity of the particle using simple v = d/t, where d is the distance the particle has moved and the t is time, which is 1/f (f is the sampling frequency).
You can extract the frames from a video file using MATLAB coding or VLC Player (take a look if the format is accepted by this player). You can also convert the image frames into gray-scaled images to facilitate the processing implementation.
Another way to see the particle motion is applying temporal filtering among frames. This type of filter registers the motion of objects in scenes.
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