Background Subtraction in Emgu Cv C#

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How can I make the background of an image black and all the objects present are white? I have tried the AbsDif and thressholding its result but it considers the lighting very much.

Here is the sample image : http://stackoverflow.com/questions/19699687/algorithm-to-count-people-in-a-crowd[^]

Please help.

Posted 7-Nov-13 16:22pm

Abe-r

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Member 12517620 · Answer 1 · 2016-11-14T14:32:00

Try Canny filtering first to detect edges

VB

Dim img As New Image(Of Bgr, Byte)("img.jpg")
Dim imgCANNY As Image(Of Gray, Byte) = img.Canny(90, 70)

Then make Binarization

VB

Dim img_BINARY As Image(Of Bgr, Byte) = img.ThresholdBinary(New Bgr(100, 100, 0), New Bgr(0, 100, 100))

Convert it to C# and play with numbers to get best result, also u can try different filtering to get better result
(Sobel, Laplace, Sub, EqualizeHist, SmoothBilatral)

Additional information here: www.emgu.com/wiki/

Best,
Nick