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| author | satorux@chromium.org <satorux@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-05-27 03:50:45 +0000 |
|---|---|---|
| committer | satorux@chromium.org <satorux@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-05-27 03:50:45 +0000 |
| commit | a8cb9b9fc197433e89c19e237ee7a76790451936 (patch) | |
| tree | f58f7845db17ef843aedd5884df6d568760f43db /chrome/common/thumbnail_score.h | |
| parent | 458592c9b33559dd3606be3e2904022b6b9abc66 (diff) | |
| download | chromium_src-a8cb9b9fc197433e89c19e237ee7a76790451936.zip chromium_src-a8cb9b9fc197433e89c19e237ee7a76790451936.tar.gz chromium_src-a8cb9b9fc197433e89c19e237ee7a76790451936.tar.bz2 | |
Stop using the boring score for judging we should update a thumbnail or not.
The absolute boring score is not suitable for judging a thumbnail is actually
boring or not. For instance, www.google.com is very succinct so the boring
score can be as high as 0.9, where 1 is the maximum. This score should only
be used for comparing two thumbnails taken from the same page to see which one
is more boring/interesting.
BUG=65936
TEST=with --enable-in-browser-thumbnailing --vmodule=thumbnail_generator=1, confirm that the thumbnail is not updated very often for www.google.com.
Review URL: http://codereview.chromium.org/7071008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86965 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/common/thumbnail_score.h')
| -rw-r--r-- | chrome/common/thumbnail_score.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/chrome/common/thumbnail_score.h b/chrome/common/thumbnail_score.h index 39fe0e2..d35d7d8 100644 --- a/chrome/common/thumbnail_score.h +++ b/chrome/common/thumbnail_score.h @@ -35,6 +35,13 @@ struct ThumbnailScore { // percentage of pixels that are the most common luma. Higher boring // scores indicate that a higher percentage of a bitmap are all the // same brightness (most likely the same color). + // + // The score should only be used for comparing two thumbnails taken from + // the same page to see which one is more boring/interesting. The + // absolute score is not suitable for judging whether the thumbnail is + // actually boring or not. For instance, www.google.com is very + // succinct, so the boring score can be as high as 0.9, depending on the + // browser window size. double boring_score; // Whether the thumbnail was taken with height greater then |