in reply to Re^5: PDL: Looking for efficient way to extract sub-images, by finding bounding boxes of "objects" (FAQ6: $&)
in thread PDL: Looking for efficient way to extract sub-images, by finding bounding boxes of "objects"

Thanks. I can allow myself :) to run all my code under new versions, and disregard performance issues of $&. Btw, using $& instead of creating capture groups and $1 gives a slight boost to "buk3". Also, I earlier experimented with "yr" - using "pos" (as it is) also gives quite a boost against using $-[0] or $+[0].
  • Comment on Re^6: PDL: Looking for efficient way to extract sub-images, by finding bounding boxes of "objects" (FAQ6: $&)

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Re^7: PDL: Looking for efficient way to extract sub-images, by finding bounding boxes of "objects" (FAQ6: $&)
by BrowserUk (Patriarch) on Nov 22, 2016 at 11:19 UTC
    Btw, using $& instead of creating capture groups and $1 gives a slight boost to "buk3". Also, I earlier experimented with "yr" - using "pos" (as it is) also gives quite a boost against using $-[0] or $+[0].

    Interesting. Something for me to experiment with next time I'm doing something similar.

    Also, did you see the results from eily's approach to the problem?

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