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detect moving blobs in videos with lot of flicker

asked 2013-06-24 07:02:59 -0500

cipher gravatar image

I have been using the runnning segmentation method and subsequently dilating and eroding the difference images before detecting blobs in the image. My aim is to detect moving blobs in videos but the process does not work well with certain videos with a lot of flicker.

I am hoping that someone can suggest modification to my method , maybe using edges or something better so that I can work with such flickering videos which produce lot of grains in the difference images apart from the moving blobs.

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answered 2013-06-24 08:52:54 -0500

unxnut gravatar image

What is the source of flicker? Is it that you get blank frames or there is too much noise? If there is flicker due to noise, you may want to run a median filter or blur filter before erode/dilate.

If you can give more information on the source/type of flicker, you may get better suggestions.

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Thanks for the suggestion, it works. Actually the flicker was caused due to the quality of camera. It is an analog camera with a DVR. The chinese built camera was used for recording moving traffic but is not built for the same. It has constant flicker either in form of lines or sudden change in contrast in pixels around a moving object. This was causing my algorithm to detect lot of movement which has reduced quite a bit by blurring it. Thanks

cipher gravatar imagecipher ( 2013-06-24 20:38:43 -0500 )edit
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Asked: 2013-06-24 07:02:59 -0500

Seen: 872 times

Last updated: Jun 24 '13