Well, looking at my Sonar output when I point it at Commons Imaging, I'd say what it needs most is a little TLC to look into all of the critical (141) and major (3594) bugs/issues that it has (as far as Sonar is concerned at least). I would imagine addressing some of these might even give us a boost in performance.
On Fri, Jun 8, 2012 at 3:54 PM, Gary Lucas <gwlu...@sonalysts.com> wrote: > I am making this post to the developers mailing list to see if anyone has > ideas about areas in the Apache Commons Imaging project that would benefit > from performance enhancements. Last year, I had a requirement through my job > to support TIFF images in Java. I selected the Apache Imaging package (which > was called Sanselan at the time) because it offered a pure Java solution and > avoided the hassles associated with the Java Advanced Imaging add-on. Since > then, I've put in some of my own time polishing up the image-reading > operations to improve the speed of rendering. I've had some success and was > wondering if there were other file formats supported by Apache Imaging that > might benefit from similar attention. Of course, the situation for TIFF is > a little different from that of the more mainstream formats such as JPEG, > PNG, and GIF which are directly supported by image ImageIO. I'd be less > inclined to work on formats that already have good support, but if there were > special requirements that could be addressed through Apache Imaging I'd be > willing to take a look at them. > > Just to give a sense of what's possible, consider the speed improvements to > the TIFF format. This morning, I used a test application called > ApacheImagingSpeedAndMemory from the Apache Imaging code distribution to run > time trials on the original Sanselan 0.97 incubation version of Apache > Imaging and the lastest code trunk. For a largish 10,000 by 10,000 pixel > image, the original version required 15.9 seconds and used 679.8 megabytes of > memory to load the image. The new version required 1.9 seconds and used > 383.2 megabytes. For a smaller 3,600-by-1,800 pixel image, the load times > were reduced from 0.89 seconds to 0.095. I wish I could say that I did > something really cool to get these improvements, but the truth is that it was > just old-fashioned coding and recognizing areas where redundant processing > could be avoided. > > > Anyway, I don't have a huge amount of free time to throw at this project, but > if anyone comes up with an interesting idea, I might be willing to give it a > shot. > > Gary > > > > > Computer Programming is the Art of the Possible > Gary W. Lucas, Senior Software Engineer > Sonalysts, Inc. > 215 Parkway North > Waterford, CT 06385 > (860) 326-3682 > 41-22-12.35 N / 72-10-07.54 W (USNG/MGRS: 18T YL 36787 83711) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
