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  4. how to smooth projection histogram of binary image?

how to smooth projection histogram of binary image?

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  • G Offline
    G Offline
    gentleguy
    wrote on last edited by
    #1

    dear all how to smooth projection histogram of binary image? thanks a lot in advance.

    gentleguy

    CPalliniC M L 3 Replies Last reply
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    • G gentleguy

      dear all how to smooth projection histogram of binary image? thanks a lot in advance.

      gentleguy

      CPalliniC Offline
      CPalliniC Offline
      CPallini
      wrote on last edited by
      #2

      :confused:

      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
      This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
      [My articles]

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      • G gentleguy

        dear all how to smooth projection histogram of binary image? thanks a lot in advance.

        gentleguy

        M Offline
        M Offline
        Maximilien
        wrote on last edited by
        #3

        What's a "projection histogram of binary image" ? google tells me it's related to "image registration" (alignment of two or more images) but what are you wanting to smooth ?

        This signature was proudly tested on animals.

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        • M Maximilien

          What's a "projection histogram of binary image" ? google tells me it's related to "image registration" (alignment of two or more images) but what are you wanting to smooth ?

          This signature was proudly tested on animals.

          G Offline
          G Offline
          gentleguy
          wrote on last edited by
          #4

          i have read one journal paper, they said, first get projection histogram which are obtained by counting the number of black pixels on the binary image, then smoothing is performed to the histogram. so i want to know how to smooth this histogram?thanks

          gentleguy

          CPalliniC 1 Reply Last reply
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          • G gentleguy

            i have read one journal paper, they said, first get projection histogram which are obtained by counting the number of black pixels on the binary image, then smoothing is performed to the histogram. so i want to know how to smooth this histogram?thanks

            gentleguy

            CPalliniC Offline
            CPalliniC Offline
            CPallini
            wrote on last edited by
            #5

            Make little steps my friend: start with a good C++ tutorial. :)

            If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
            This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
            [My articles]

            In testa che avete, signor di Ceprano?

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            • G gentleguy

              dear all how to smooth projection histogram of binary image? thanks a lot in advance.

              gentleguy

              L Offline
              L Offline
              Lost User
              wrote on last edited by
              #6

              There are several smoothing/convolution algorithms that you can use to smooth the projection histogram. You can begin your research by using a gaussian smoothing filter. http://www.codeproject.com/info/search.aspx?artkw=Gaussian[^] http://en.wikipedia.org/wiki/Numerical_smoothing_and_differentiation[^] The lesser known polynomial filter (Savitsky-Golay) may produce a more accurate result depending on your area of research. http://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_smoothing_filter[^] http://research.microsoft.com/users/jckrumm/SavGol/SavGol.htm[^] Best Wishes, -David Delaune

              N 1 Reply Last reply
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              • L Lost User

                There are several smoothing/convolution algorithms that you can use to smooth the projection histogram. You can begin your research by using a gaussian smoothing filter. http://www.codeproject.com/info/search.aspx?artkw=Gaussian[^] http://en.wikipedia.org/wiki/Numerical_smoothing_and_differentiation[^] The lesser known polynomial filter (Savitsky-Golay) may produce a more accurate result depending on your area of research. http://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_smoothing_filter[^] http://research.microsoft.com/users/jckrumm/SavGol/SavGol.htm[^] Best Wishes, -David Delaune

                N Offline
                N Offline
                Nelek
                wrote on last edited by
                #7

                If I had voting-buttons I will would give you a good mark for the good links.

                Regards. -------- M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you “The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson Rating helpfull answers is nice, but saying thanks can be even nicer.

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