7.26 KB, application/zip
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:0.9.5+) Gecko/20011018 BuildID: 2001101803 As imaging technologies move from pixel sizing to physical (cm, pt, etc.) sizing, web browsers will need to resample images to the user's display resolution. We can no longer rely on all inline images being created at 96 dpi, stored at 96 dpi, sent over the wire at 96 dpi, and displayed at 96 dpi. We can't rely on Mozilla's current "nearest neighbor" scaling algorithm that introduces horrible aliasing artifacts because the ugly appearance of scaled images will discourage web site designers from using resolution-independent markup and stylesheets. Reproducible: Always Steps to Reproduce: 1. Download and unzip the forthcoming attached test case. 2. From Mozilla, open aliasing.html 3. Scroll down to the "Actual" images. Actual Results: In both quirks and standard mode, scaled images have ugly aliasing due to nearest-neighbor resampling. (This also happens in MS Internet Explorer 4.0, 5.0, 5.5, and 6.0 for Win32.) Expected Results: Scaled images have little aliasing. To reduce aliasing by 6 dB/octave, use bilinear interpolation instead of nearest neighbor resampling. If this poses a performance problem, make it a preference. Bug 90813 covers the same problem with respect to text rather than inline images.
Duplicate of "Bilinear scaling need for line art and scalable web pages" (which has an implementation attached btw; it just needs to be integrated into Mozilla. *** This bug has been marked as a duplicate of 98971 ***
Status: UNCONFIRMED → RESOLVED
Last Resolved: 18 years ago
Resolution: --- → DUPLICATE
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