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PO"java.lang.OutOfMemoryError: Java heap space" in image and array storage
 

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  1. PO"java.lang.OutOfMemoryError: Java heap space" in image and array storage
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    <p>I am currently working on an image processing demonstration in java (Applet).</p> <p>I am running into the problem where my arrays are too large and I am getting the "java.lang.OutOfMemoryError: Java heap space" error.</p> <p>The algorithm I run creates an NxD float array where: N is the number of pixel in the image and D is the coordinates of each pixel plus the colorspace components of each pixel (usually 1 for grayscale or 3 for RGB). For each iteration of the algorithm it creates one of these NxD float arrays and stores it for later use in a vector, so that the user of the applet may look at the individual steps.</p> <p>My client wants the program to be able to load a 500x500 RGB image and run as the upper bound. There are about 12 to 20 iterations per run so that means I need to be able to store a 12x500x500x5 float in some fashion.</p> <p>Is there a way to process all of this data and, if possible, how?</p> <p>Example of the issue: I am loading a 512 by 512 Grayscale image and even before the first iteration completes I run out of heap space. The line it points me to is: </p> <p>Y.add(new float[N][D])</p> <p>where Y is a Vector and N and D are described as above. This is the second instance of the code using that line.</p> <p>EDIT: The upper bound, as I mentioned but forgot to correct should be around: 20+ x500x500x5 (20 iterations, 500 width, 500 height, 5 dimensions (where 3 comes from RGB and 2 for the coordinates (The coordinates move and so do the pixels, so I need to record the values, which can and are decimals)) (Approx. 100000000 bytes)</p>
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    1. COWhy use a float? I mean, isn't a byte enough?
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    2. COI explain in my edit. Sorry for that
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