RearViewMirror | Web camera motion detector and popup notifer | Camera library
kandi X-RAY | RearViewMirror Summary
kandi X-RAY | RearViewMirror Summary
This is a simple application that connects to a web camera device or MJPEG enabled webcam and displays a window whenever motion is detected. It was intended to be a "Rear View Mirror" in my cubical so people wouldn't sneak up on me. The program also contains a simple HTTP MJPEG server so that other clients can connect to your web camera.
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QUESTION
I have this dataset:
...ANSWER
Answered 2021-May-27 at 15:51If you want to standardize or normalize the tracks within each group, you can use dplyr::group_by
. For a log-scale, you may want to normalize so that the values are between [0, 1]. Normalizing involves taking the difference between the value and its minimum (b/c decibels are negative) and dividing by the minimum. We also have to subtract from 1
to move the range from [-1, 0] to [0, 1].
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