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Questions tagged [motion-detection]

Related to detection of motion related to programming issues, like computer vision, sensor control, etc.

Motion detection is a process of confirming a change in position of an object relative to its surroundings or the change in the surroundings relative to an object. This detection can be achieved by both mechanical and electronic methods. In addition to discrete, on or off motion detection, it can also consist of magnitude detection that can measure and quantify the strength or speed of this motion or the object that created it.

Motion can be detected by: sound (acoustic sensors), opacity (optical and infrared sensors and video image processors), geomagnetism (magnetic sensors, magnetometers), reflection of transmitted energy (infrared laser radar, ultrasonic sensors, and microwave radar sensors), electromagnetic induction (inductive-loop detectors), and vibration (triboelectric, seismic, and inertia-switch sensors).

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Resources for working with video feeds in C#

I'm starting to get into a side project that I hope to pull in frames from several small IP cameras, perhaps do a bit of motion detection and redisplay them in a form with alerts. Does anyone have some good resources or similar projects that I…
Echostorm
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Biovision Hierarchical File (BVH) Euler angle specification differences

Problem I am trying to get features out of a BVH file by parsing it. The BVH file is exported through NUICapture, a software that captures body movement through Kinect. All BVH example files I know specify the Euler angles in ZXY notation, not ZYX,…
user2391299
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Is it possible to use ViBe algorithm, implemented in opencv, for systema without GPU?

I want to test ViBe algorithm for Background Subtraction. Currently I am using opencv libraries. I found out a sample implementation in opencv/samples/gpu/bgfg_segm.cpp and bgfg_vibe.cpp files. These files are under gpu module. Now I have a system…
sam18
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Motion detection on screenshots

I'd like to know if there is a fast algorithm that can detect parts that moved between two sequential screenshots. The algorithm should take two images and output a set of (rectangular) regions in one image and a vector that describes where the…
fuz
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the difference between SAD and SSD

Can anyone tell me, what's the difference between SAD and SDD? I'm talking about Sum of Absolute Differences and Sum of Squared Differences. just in in SSD u get the measure of difference in the square? Instead of raise to the second power I can…
a3dsfcv
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Motion detection in compressed domain (JPEG/Mpeg4/H264)

everyone! I process video from IP cameras and have wrote a motion detection algorithm based on decompressed video analysis. But i really something more fast. I've found several papers about compressed domain analysis but have failed to find any…
paft
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Video files in opencv

I want to read video file(.avi or .mov) and detect motion and edges using Opencv.Can u help me with code?I want to create a GUI in which we can select the video file,then we can carry out image processing functions in opencv?
user1237471
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Efficiently way to compute colocation in space

Given a polyline P = {(x1, y1), ..., (xn, yn)} and another polyline Q = {(x1, y1), ..., (xm, ym)} (m not equal n, so polylines could have different length), colocation in space occurs when the trajectories of moving objects P and Q, have some…
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How can I compare 2 images and delete the last one if they are the same?

I made a video recorder that takes screenshots each frame and saves it in a temporary folder. When I press the Stop recording button it puts it all together in one video. I now need to have my program check the latest 2 screenshots it has taken and…
Kostas G
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How to detect motion from camera in Flutter?

I want to use my mobile camera as a security camera and I want to detect the motion of any object from the camera and trigger the alarm. Is there any way to detect the motion from the camera in flutter for both android and ios?
Arsalan Umer
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How does Android calculate Rotation Vector?

Android documentation says here (just read top 4-5 lines) that Rotation Vector Sensor is software based. But most of Android devices actually have 3 sensor, viz. accelerometer, gyroscope, and magnetometer. So there must be a conversion algorithm…
kumarchandresh
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Robust motion detection in C#

Can anyone point me to a robust motion detection sample/implementation? I know EMGU has a motion detection sample, but its not very good, even small changes in light will be falsely detected as motion. I don't need to track objects. I am looking for…
Shachar Weis
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Rapid motion and object detection in opencv

How can we detect rapid motion and object simultaneously, let me give an example,.... suppose there is one soccer match video, and i want to detect position of each and every players with maximum accuracy.i was thinking about human detection but if…
Lyndon Peters
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Motion Tracking in opencv python

So I have been trying to make a motion tracker to track a dog moving in a video (recorded Top-down) retrieve a cropped video showing the dog and ignore the rest of the background. I tried first with object tracking using the available algorithms in…
Wazaki
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Easy Object Tracking Matlab Algorithms

I have timelapse images of moving mammalian cells from a cell culture and I'm trying to design a tracking algorithm for the cells using Matlab. I am trying to look for an algorithm that is simple and easy to implement with low processing times. Most…
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