Opencv getGaborKernel parameters for filter bank

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北海茫月
北海茫月 2021-02-06 05:13

How opencv getGaborKernel function parameters related to orientation and scale parameters?

I assume theta is orientation, but what refers to scale?

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  • 2021-02-06 05:41

    Here are the meaning of parameters:

    • ksize Size of the filter returned.
    • sigma Standard deviation of the gaussian envelope.
    • theta Orientation of the normal to the parallel stripes of a Gabor function.
    • lambda Wavelength of the sinusoidal factor.
    • gamma Spatial aspect ratio.
    • psi Phase offset.
    • ktype Type of filter coefficients. It can be CV_32F or CV_64F.

    The orientation can be modified by theta and the scale by i.e. lambda. Here you have a good tutorial about What do the Gabor filter parameters mean?. Update September 2020: The link to What do the Gabor filter parameters mean? no longer works. Try Through The Eyes of Gabor Filter instead.

    I also attach the image from the site above:

    I have also attach the image from the site

    Copyright by Juergen Muller

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