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Thread: Translation to Java?

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    Default Translation to Java?

    I have the following code which can be used on a 2d array of pixel values to do the fft and get the magnitude of the image. I wonder can anyone translate this code to its Java equivalent:


    Thanks in advance for any help you can offer
    Last edited by java_novice; February 9th, 2012 at 12:39 PM.


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    Default Re: Translation to Java?

    I wonder can anyone translate this code to its Java equivalent
    Almost certainly, yes, as the code isn't particularly involved.

    The pointer arguments are most simply expressed in Java as (possibly double) arrays.

    But before you start to translate it, first get a clear and precise idea of what each of the methods *does*. That is, don't get too hung up on the Java code you write until you have a clear idea of what that code should be doing. Also where the C++ code makes reference to other quantities (like the limit nFFT2 or the Sin and Cos arrays) find out what those quantities are supposed to represent.

    If you find the C++ code mysterious, then my advice would be to forget it and write your own implementation in Java.

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    Default Re: Translation to Java?

    Quote Originally Posted by pbrockway2 View Post
    But before you start to translate it, first get a clear and precise idea of what each of the methods *does*. That is, don't get too hung up on the Java code you write until you have a clear idea of what that code should be doing. Also where the C++ code makes reference to other quantities (like the limit nFFT2 or the Sin and Cos arrays) find out what those quantities are supposed to represent..
    The nFFT and nFFT2 are the number of fft points eg in a 256x256 image, nFFT=256 and nFFT2=158.
    Last edited by java_novice; February 9th, 2012 at 12:39 PM.

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    Default Re: Translation to Java?

    Problem solved, thanks
    Last edited by java_novice; February 9th, 2012 at 12:40 PM.

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    Super Moderator pbrockway2's Avatar
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    Default Re: Translation to Java?

    Does that compile?

    You are accessing Sin and Cos as double arrays.

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