Opened 15 years ago
Last modified 10 years ago
#22531 new defect
libdevil scaling filters do not work when reducing images
| Reported by: | jrmair@… | Owned by: | ryandesign (Ryan Carsten Schmidt) |
|---|---|---|---|
| Priority: | Normal | Milestone: | |
| Component: | ports | Version: | 1.8.1 |
| Keywords: | Cc: | ||
| Port: | libdevil |
Description
Hi,
The following code should generate a high-quality thumbnail (I am using the lanczos3 filter): http://gist.github.com/234637
However, the resulting thumbnail is of very poor quality, it is almost indistinguishable from the nearest neighbor algorithm.
This is particualrly strange behavior because in Debian Linux using the libdevil1c2 / libdevil-dev package the thumbnail quality is very high, as expected.
What is the difference between the Debian package and the macports libdevil package such that the filters work in Debian but not on macports?
It is very important that the high-quality filters work properly as thumbnailing is a very common application of DevIL.
Change History (5)
comment:1 Changed 15 years ago by jrmair@…
| Cc: | jrmair@… added |
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comment:2 Changed 15 years ago by nerdling (Jeremy Lavergne)
| Cc: | jrmair@… removed |
|---|---|
| Owner: | changed from macports-tickets@… to simon@… |
comment:3 Changed 14 years ago by simon@…
| Owner: | changed from simon@… to macports-tickets@… |
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comment:4 Changed 14 years ago by jmroot (Joshua Root)
Looks like an upstream bug: http://sourceforge.net/tracker/?func=detail&aid=3164021&group_id=4470&atid=104470
comment:5 Changed 10 years ago by jmroot (Joshua Root)
| Owner: | changed from macports-tickets@… to ryandesign@… |
|---|
Cc Me!