Apache OpenOffice (AOO) Bugzilla – Full Text Issue Listing
|Summary:||Allow fast and nicer looking JPEG preview|
|Status:||CLOSED FIXED||QA Contact:||issues@gsl <issues>|
|Priority:||P4||CC:||groucho266, issues, ooo, thb|
|Target Milestone:||OOo 2.1|
|Issue Type:||ENHANCEMENT||Latest Confirmation in:||---|
|Issue Depends on:|
Description email@example.com 2005-09-28 11:31:15 UTC
There are a lot of tasks in OOo that only require JPEGs in preview quality. Currently previews in OOo are done by loading the entire image and then scaling it down by using selected pixels of the full image. By using only the low-frequency coefficients of the JPEG block's DCT there would be these benefits: - less memory usage - by not needing the memory for the full blown images - increased speed by - not needing complete IDCT - avoiding color transforms on pixels that will get ignored later - less work for Image->UniqueHash operations - better preview quality - because the image is not disturbed by aliasing issues between high-frequency DCT coefficients and the statistical downsampling
Comment 1 firstname.lastname@example.org 2005-09-28 11:32:18 UTC
Comment 2 email@example.com 2005-09-28 11:35:07 UTC
Comment 3 thb 2005-10-04 11:34:42 UTC
Added myself to cc list.
Comment 4 wolframgarten 2005-12-14 12:33:18 UTC
WG: target set because CWS target is delayed.
Comment 5 firstname.lastname@example.org 2006-07-12 14:51:05 UTC
Fixed in CWS pngperf
Comment 6 email@example.com 2006-08-24 13:52:28 UTC
Reopening for reassignment to QA.
Comment 7 firstname.lastname@example.org 2006-08-24 13:52:59 UTC
Comment 8 email@example.com 2006-08-24 13:53:22 UTC
Please verify in CWS pngperf.
Comment 9 wolframgarten 2006-08-28 13:55:21 UTC
Comment 10 wolframgarten 2006-09-14 14:25:58 UTC