Ron Economos wrote: > Just a thought. I wonder if the de-interlacing performance > of the PDP and LCD panels was a factor in the lower 1080i@25 > scores. In the full report, the de-interlacing performance > is characterized as "good". Was it good enough? Actual tests > of panel de-interlacing can be pretty disappointing. > > Maybe displaying 1080i@25 on a good old truly interlaced CRT > based studio monitor would have leveled things out? This has to be a major factor to consider. Seems to me that deinterlacing is one of those CPU intensive tasks that will improve in time. I would predict that as deinterlacing algorithms improve, the image quality comparisons will more closely track the theoretical limits of baseband signal bandwidth or pixel transfer rate. This article http://www.digitaltvdesignline.com/howto/showArticle.jhtml?articleId=199 203870&pgno=1 describes a new technique that is supposedly an improvement of the motion adaptive and motion compensated techniques. The article says that motion compensation techniques measure the reliability of their results. If the results measure unreliable, then the algorithm defaults to spatial interpolation. And because these algorithms are conservative, deinterlacing often will be done with spatial interpolation, which will not give great results. This new technique, which they call "super-resolution," looks at the results of various deinterlacing techniques and selects the best one for each occasion. They claim this: "A criterion has to be found to choose one candidate estimator. This criterion has to be comparative, using a mathematical norm on the video signal. A total variation norm measures the amplitude of oscillations and variations of the image (jaggies and flickers are spatio-temporal oscillatory artifacts), without penalizing discontinuities. One can prove that the total variation of an image is essentially proportional to the total length of edges, whether these edges are discontinuous or smooth transitions. This norm is then used to choose the appropriate candidate." The article shows an impressive result. Whether this is the holy grail or not, it seems clear that Moore's Law will play a part in making 1080 at 60i a more competitive mode for HDTV, even if 1080 at 60p is not incorporated in the standard or in production equipment real soon. Bert ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.