Questions tagged [motion-detection]
The motion-detection tag has no usage guidance.
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How to detect a line from a broken line segment in video?
I am trying to detect meteors in a video, and so far, what I did.
Preprocessing: changing to grayscale and morphological operations like dilation and erosion.
background subtraction method
adding ...
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Using radar IQ data to detect motion
I have a 24GHz motion detector (SMR-333 website, sparse datasheet) that gives I and Q, without signal processing. How can I use these values to detect motion? I only need to detect if a person moves ...
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Fast and Slow motion video detection using Optical Flow
I'm trying to calculate a "video motion" value in a given video sequence, meaning how fast or slow motion the video is. For instance, if a video is about a car racing, the value is high. Whereas if ...
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Detecting moved and dirty areas between two snapshots/images
I'm new to image processing and trying to figure out best way to identify 'moved' and 'dirty' rectangles between two desktop screenshots.Basically, lets say there is a round circle moving on a screen, ...
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Possible ways to determine the direction of moving object?
I'm trying to determine the moving direction of an object in x-axis only. Figure below shows part of my effort.
However, I got stuck. As you can see from the middle image, the green represent the dot ...
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Motion detection one threshold over dataset
We're working on a project where we have to detect the moments where motions happen in a medical scene. I have a data set of 20 videos that are closely resemble (Same camera & configuration used, ...
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how to detect and capture scene change in a recorded video
I have a project to detect and capture scene change in a recorded video.Actually its a recorded video of a godown (of about 2 weeks) and I have to detect and capture pic whenever someone comes in.
I ...
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Anti tremor motion detection
I'm programming in c# using opencv (emguCV). I use motion detection approach to detect some changes in a paper wall. For example it's may be colored by a laser pointer. My problem is that when I use ...
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Algorithm to effectively find perspective transform in motion estimation
I've shot a series of photographs in a sort of stop-motion fashion, and although the camera was mounted on a tripod, there are tiny motions between each two successive photos.
After some ...
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Extracting motion vectors from H.264 bitstream
I'm looking for an open-source tool/code or some guidance to extract the motion vectors (MVs) of a H.264 encoded bit sequence. I'm already aware that motion vectors can be visualized using ffmpeg with ...
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Optical flow equation and real images
We know optical flow equation cannot be calculated without additional constraints. But what I cannot figure out is why it does not hold exactly for real images? This equation has gradient and so, it ...
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OpenCV Motion Analysis: Optical Flow vs Motion History
OpenCV Motion Analysis Documentation lists multiple techniques for motion tracking:
Sparse Optical Flow | calcOpticalFlowPyrLK,
Dense Optical Flow | calcOpticalFlowFarneback, and
Motion History ...
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726
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Correlating accelerometer data
I am getting a signal from a device. This signal contains a non-random noise signal in it. I want to remove that noise from the signal. This noise is correlated to the motion the device is having. So ...
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Motion and Distortion Estimation using multiple still images?
TL/DR: I'd like to take the median of lots of images to make a single "better" image. The problem is, the camera is slowly moving, and there is significant lens distortion. On the plus side the ...
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Estimating degree of motion in video frames
I have a video (in webm format), and I want to produce a graph that shows the degree of motion in this video as a function of video time. I'm sure there are many different ways to define "degree of ...
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Image Registration and optical flow
Image registration algorithms can be classified into intensity-based and feature-based algorithms, I want to know When and Why should i choose intensity or feature based algorithm?
another question ...
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How to get translation and roation data using 6DOF MPU6150
I am trying to get the position data from an IMU 6 Degrees of Freedom (MPU-6150) board using an Arduino Uno. I am trying Jeff Rowberg’s example MPU6050_DMP6.ino that may be found here.
This is the ...
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Searching for image samples in order to create custom classifier
I am training a classifier of my own, specifically for detecting body arms. According to the training process I have to provide positive samples and negative samples, wich will be used in the ...
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Vehicle segmentation and tracking
I've been working on a project for some time, to detect and track vehicles in video captured from UAV's, currently I am using an SVM trained on bag-of-feature representations of local features ...
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How to do people detection from bird eye view?
I'm trying to do people detection from bird eye view.
Actually, it is not a normal bird eye view because I don't have RGB images but I have disparity map, depth map as well.
In these kind of images, ...
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Vehicle counting from a video
Disclaimer: I posted this question on StackOverFlow but learned that it is better suited here.
I am a bit new to image processing so I'd like to ask you about finding the optimal solution for my ...
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Fast approximate optical flow / image shift
I need to detect how fast a camera is panning (either horizontal/vertical) to give a warning to the operator to slow down.
The entire image is moving as a block, I don't need an actual direction (...
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