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From: | Han-Wen Nienhuys |
Subject: | Re: Backend and non-backend (was Re: Stencil bounding box) |
Date: | Tue, 02 May 2006 21:05:01 +0200 |
User-agent: | Thunderbird 1.5 (X11/20060313) |
David Feuer schreef:
One possibility: Take all image elements (on a high level I guess this would be grobs, on a low level it'd be stencil pieces). Separate them by type (stems here, noteheads there; rectangles here, glyphs there), and within each type sort them by left edge of bounding box, bottom edge of bounding box, width, and height. Count to see if there are the same number of elements of each type, then pair up corresponding elements and compute the correlation coefficients or similar statistics for the coordinates of pairs.
You cannot sort by coordinate: comparing floating point numbers is not stable, and the input will have lots of degenerate cases, due to all the alignments.
-- Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen LilyPond Software Design -- Code for Music Notation http://www.lilypond-design.com
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