background-subtraction Questions

25

Solved

Here's what I would like to do: I'm taking pictures with a webcam at regular intervals. Sort of like a time lapse thing. However, if nothing has really changed, that is, the picture pretty much lo...

2

I want to implement a background averaging method. I have 50 frames of images taken in one second and some of the frames contain lightning which I want to extract as the foreground. The frames are ...
Gregson asked 14/10, 2011 at 9:47

3

How can I tell BackgroundSubtractorMOG2 which pixels to update to the background model and which pixels shouldn't. I am facing problem when there's an object entered the scene and stopped for a fe...
Ignite asked 20/9, 2012 at 3:8

4

Do you know any sources with background subtraction from moving camera? I want to write something similar to this: http://vimeo.com/72577177 There is a lot of materials about movement detection w...
Abeyta asked 2/3, 2014 at 20:41

7

I am trying to use cv2.createBackgroundSubtractorMOG2 () method in Python. I have tried both on my Mac and on my Raspberry Pi, and get the same error when running the following line of code: fgbg ...
Delrosario asked 10/9, 2013 at 14:25

3

I need a robust motion detection and tracking in web cam's video frames. The background is always the same. The aim is to identify the position of the object, if possible without the shadows, but n...

1

Im trying to remove the background from a video and get a binary images( or 8-bit) where value of the object that moves is 1 and static background is 0. something like this: at first I tried it...

4

Solved

I was trying to go through this tutorial på OpenCV.org: http://docs.opencv.org/trunk/doc/tutorials/video/background_subtraction/background_subtraction.html#background-subtraction The MOG pointer ...
Le asked 7/10, 2013 at 10:1

1

What's the difference between these 3 methods of background subtraction in OPenCV : MOG, MOG2, and GMG ?
Euromarket asked 21/10, 2015 at 18:3

3

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I am working on a robotics project using an Android phone as the main processor and the camera to detect movement. I got the Android binary package from OpenCV and got it correctly installed. I can...
Stratocumulus asked 12/2, 2012 at 4:51

4

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For what kind of applications can i use dsp core of beagleboard? Can i use the DSP acceleration for background subtraction algorithm in OpenCV?

3

Solved

I've got background subtraction to work quite well. But the problem is, it marks shadows as foreground as well. Has anyone found some technique to get rid of shadows from the background? Links to ...

1

I am rather new to OpenCV and image processing in general. I am looking into background subtraction to facilitate motion tracking (people counting). Looking at the openCV documentation on backgroun...
Zusman asked 3/4, 2015 at 9:50

1

Solved

I use opencv for a vehicle counting process. How could I save my BackgroundSubtractorMOG object such as BackgroundSubtractorMOG2 etc to a file, so that I can read it from the file, use the trained ...
Crest asked 9/12, 2014 at 1:54

4

Solved

OpenCV library version 2.42. I'd like to set a parameter in BackgroundSubtractorMOG2 object, e.g. BackgroundSubtractorMOG2 bgr; // the following doesn't work because 'nmixtures', 'backgroundRati...
Chairmanship asked 12/10, 2012 at 14:17

1

I tried to use BackgroundSubtractorMOG to remove the background but there are some object that already left the frame but the result from BackgroundSubtractorMOG.apply() still show that the object ...
Eveland asked 6/9, 2014 at 15:11

1

Solved

Summary It seems like changing the parametes of BackgroundSubtractorMOG doesn't affect the results of the algorithm. I'm usign Python: 2.7.6 |Anaconda 2.1.0 (64-bit) OpenCV: '2.4.10' OS: Windows ...
Jinnyjinrikisha asked 4/11, 2014 at 17:14

6

Solved

I want to track a laser light dot(which is on a wall) with a webcam and i am using openCV to do this task. can anybody suggest me a way to do it with C++. Thank you !

1

Solved

I am working on a tracking algorithm and one of the earliest steps it does is background subtraction. The algorithm gets a series of frames that represent the video with a moving object and static ...
Gingras asked 22/5, 2014 at 12:25

4

Solved

I'm using OpenCV2.2 to implement moving objects detection with the method of Background Subtraction. And I use the Gaussian Mixture Model(GMM) method to model the background reference image. I di...

1

I am trying to substract background from depth images acquired with kinect. When I learned what otsu thresholding is I thought that it could with it. Converting the depth image to grayscale i can h...
Redshank asked 18/10, 2012 at 11:53

1

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As some kind of "holiday project" I'm playing around with OpenCV and want to detect and measure stuff. Current workflow (early stage - detection): Convert to grayscale (cv::cvtColor) Apply Ada...
Thurlough asked 21/12, 2011 at 17:13

1

Solved

I have the following code which performs background subtraction and then uses findContours to draw a boundary around the foreground object. // frame - Input frame from a camera. // output - Output...
Thunderstruck asked 2/12, 2011 at 9:10

2

Solved

I have an image of the background scene and an image of the same scene with objects in front. Now I want to create a mask of the object in the foreground with background substraction. Both images a...
Krystalkrystalle asked 31/10, 2011 at 19:38

2

Solved

I want to do background subtraction in a video file using OpenCV method. Right now I'm able to do background subtraction, but the problem is that I couldn't get the output in color mode. All the ou...
Measurement asked 8/1, 2010 at 9:59

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