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Math Help - Image-processing Algorithm

  1. #1
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    Image-processing Algorithm

    I need some help with a lot of the symbols in these series of equations.

    http://i5.photobucket.com/albums/y17...e/equation.jpg

    I'm assuming \Delta g(x,y) is some kind of array or matrix. I need to know how exactly |g1(x,y) - g2(x,y)| is calculated.

    Also for equation 2, I'm at lose for how to solve for mx and my.

    For equation 3, is \delta ^ 2 some kind of weird symbol for second derivative? \delta is introduced so suddenly I don't really know what to do with it.
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  2. #2
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    Quote Originally Posted by jencake View Post
    I need some help with a lot of the symbols in these series of equations.

    http://i5.photobucket.com/albums/y17...e/equation.jpg

    I'm assuming \Delta g(x,y) is some kind of array or matrix. I need to know how exactly |g1(x,y) - g2(x,y)| is calculated.

    Also for equation 2, I'm at lose for how to solve for mx and my.

    For equation 3, is \delta ^ 2 some kind of weird symbol for second derivative? \delta is introduced so suddenly I don't really know what to do with it.
    A grey scale image is an array of intensity values (encoded in some manner often an integers in the range 0-255)  g(x,y) where x and y are the horizontal and vertical pixel indices.

    So an image is an array g(x,y). Here we have a pair of images g_1(x,y) and g_2(x,y) and \Delta g is the absolute value of the difference between the images.

    For equations 2 you do not solve for m_x amd m_y you write some code to find the required values.

    For \delta you will have to go back to the source and look for its definition, it is some sort of small constant.

    CB
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