From: "Mattias Engdegård" <mattiase@acm.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: tom@tromey.com, simon@polaris64.net, 41544@debbugs.gnu.org
Subject: bug#41544: 26.3; Possible incorrect results from color-distance
Date: Fri, 29 May 2020 19:28:44 +0200 [thread overview]
Message-ID: <94FCD141-F201-49D1-BDAD-9FFA46D48D6D@acm.org> (raw)
In-Reply-To: <83pnamn47h.fsf@gnu.org>
29 maj 2020 kl. 17.36 skrev Eli Zaretskii <eliz@gnu.org>:
> Did you try what this does to tty-color-approximate and friends,
> especially when the terminal supports only 8 or 16 colors? If not,
> please do, we must ensure there are no regressions there.
tty-color-approximate uses its own metric (square of the unweighted Euclidian RGB distance).
To test the TTY_SAME_COLOR_THRESHOLD, I tried display-supports-face-attributes-p, and it seems to behave in the same way. All tested with TERM=xterm-color, which gives the standard 8 colours.
The translated constants were obtained by generating many random RGB triples and computing distances between all pairs, then finding the value of NEWCONST which minimises the number of cases where
old-colour-dist(c1,c2) < OLDCONST
and
new-colour-dist(c1,c2) < NEWCONST
differ in truth value. The computation was also run on the rgb.txt list instead of random colours as an extra check.
next prev parent reply other threads:[~2020-05-29 17:28 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 16:29 bug#41544: 26.3; Possible incorrect results from color-distance Simon Pugnet
2020-05-28 17:31 ` Mattias Engdegård
2020-05-29 15:17 ` Mattias Engdegård
2020-05-29 15:36 ` Eli Zaretskii
2020-05-29 17:28 ` Mattias Engdegård [this message]
2020-05-29 17:52 ` Tom Tromey
2020-05-31 20:46 ` Mattias Engdegård
2020-06-01 16:32 ` Eli Zaretskii
2020-06-01 17:24 ` Mattias Engdegård
2020-06-01 17:35 ` Eli Zaretskii
2020-06-01 17:44 ` Eli Zaretskii
2020-06-02 15:27 ` Mattias Engdegård
2020-06-02 16:14 ` Eli Zaretskii
2020-06-02 20:41 ` Mattias Engdegård
2020-06-03 14:24 ` Eli Zaretskii
2020-06-03 15:01 ` Mattias Engdegård
2020-06-03 15:59 ` Eli Zaretskii
2020-06-03 20:08 ` Mattias Engdegård
2020-06-04 14:07 ` Eli Zaretskii
2020-06-04 15:29 ` Mattias Engdegård
2020-06-05 12:27 ` Eli Zaretskii
2020-06-05 15:50 ` Mattias Engdegård
2020-06-06 7:29 ` Eli Zaretskii
2020-06-06 10:59 ` Mattias Engdegård
2020-06-06 11:59 ` Eli Zaretskii
2020-06-06 13:29 ` Mattias Engdegård
2020-06-06 13:57 ` Eli Zaretskii
2020-06-06 16:54 ` Mattias Engdegård
2020-06-06 18:15 ` Drew Adams
2020-06-07 9:13 ` Mattias Engdegård
2020-06-07 14:30 ` Eli Zaretskii
2020-06-07 16:12 ` Drew Adams
2020-06-09 12:19 ` Mattias Engdegård
2020-06-07 16:00 ` Drew Adams
2020-06-06 18:27 ` Eli Zaretskii
2020-06-07 9:04 ` Simen Heggestøyl
[not found] ` <87pnabfdr5.fsf@simenheg@gmail.com>
2020-06-07 10:14 ` Mattias Engdegård
2020-06-07 19:23 ` Simen Heggestøyl
[not found] ` <87d06ar87d.fsf@simenheg@gmail.com>
2020-06-07 19:27 ` Mattias Engdegård
2020-06-08 18:39 ` Simen Heggestøyl
2020-06-07 14:26 ` Eli Zaretskii
2020-06-07 16:10 ` Drew Adams
2020-06-07 19:26 ` Simen Heggestøyl
2020-06-08 13:11 ` Mattias Engdegård
2020-06-08 14:30 ` Drew Adams
2020-06-08 19:53 ` Mattias Engdegård
2020-06-10 18:37 ` Drew Adams
2020-06-10 19:12 ` Mattias Engdegård
2020-06-09 16:20 ` Eli Zaretskii
2020-06-10 14:51 ` Mattias Engdegård
2020-06-10 15:08 ` Eli Zaretskii
2020-06-10 18:29 ` Mattias Engdegård
2020-06-10 18:45 ` Eli Zaretskii
2020-08-18 13:44 ` Lars Ingebrigtsen
2020-08-18 14:06 ` Eli Zaretskii
2020-08-18 14:10 ` Lars Ingebrigtsen
2020-08-18 14:19 ` Mattias Engdegård
2020-08-19 10:11 ` Lars Ingebrigtsen
2020-08-19 11:28 ` Mattias Engdegård
2020-08-19 11:34 ` Lars Ingebrigtsen
2020-08-18 14:51 ` Eli Zaretskii
2020-08-19 10:13 ` Lars Ingebrigtsen
2020-08-19 14:52 ` Eli Zaretskii
2020-08-19 15:03 ` Lars Ingebrigtsen
2020-08-19 17:15 ` Eli Zaretskii
2020-08-20 13:08 ` Lars Ingebrigtsen
2020-08-21 11:32 ` Mattias Engdegård
2020-08-22 13:22 ` Lars Ingebrigtsen
2020-06-04 6:15 ` Simon Pugnet
2020-06-04 8:57 ` Mattias Engdegård
2020-06-01 19:46 ` Basil L. Contovounesios
2020-06-02 15:08 ` Mattias Engdegård
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