Your humble servant begs the Learned Monks to cast a pearl or two in answer to the following:

My current project requires collecting a few standard statistical values about the pixels in an image. Typical values are the mean, average, mode, and variation of the population of pixels in a particular region of the image, such as the whole image, the border, the center region, and so on.

I have done most of the needed calculations by converting the image to a ".txt" format with ImageMagick and operating on the resulting text file. It seems likely there is a more efficient way to do this, but I have not been able to find (or, maybe, understand) a better already-invented method. Is there a Perl module that can handle an image as a complex array of integer values? Is there some better way of using ImageMagick for this? Also, is there a Perl module that can do standard statistical operations on a three-dimensional matrix?

Best regards

In reply to image statistics by vacant

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.