Am Mittwoch, 5. Juli 2006 00:03 schrieb stefan: > Steven M. Schultz schrieb: > > I'm on vacation at the moment and a lengthy discussion is not possible > > (about to wander out and do some sight seeing) but my suggestion > > is omit the deinterlace step > > > > clearly depends on what he tries to do... I (at least) prefer good > deinterlaced material to interlaced material as I can not tell the > difference on TV-screen (but I can on a progressive display! so > deinterlaced it works for both...) BTW I do record progressive only, > now... *g* > Hmmm... Please excuse my dumb question. Here are you puzzling me a little bit. My model of thinking with respect to interlacing/deinterlacing is as follows: - If the material is tv life (say a football match with very fast motion) then I think that is is a good idea to let the material interlaced because of the "kammeffekt" (Sorry, I don't know the correct english word). - If the source is a movie, then it depends. If I have recorded with lavrec from my bt787, I have 422 subsampling. So there is no loss in the vertical direction. The critical thing happens if I use my Canopus to digitize to dv which has 420 subsampling. If I would deinterlace in that case, the vertical chroma resolution becomes wrong. Am I wrong here? BTW. Sometimes I have the feeling that the fields are shifted by one frame in the dv capturing. Can this happen?
A completely different question. Recently, I encoded a very old (15 years) and often used commercial VHS tape for my archive. It had an unusual high noise level. Playing around with the different denoiser settings my test audience had a very strange view: The best impression made the noisy tape because of its "sharpness"! When using yuvdenoise (without any tuning) the picture was considered blurred, unsharp, unviewable. This seems to be a psychological question: Better noisy than unsharp. Do you have an idea about a good compromise? It should allow for low bit rate encoding, too. In the literature about denoising methods, I found edge sharpening denoising methods based on anisotropic diffusion equations. For me as a mathematician this approach looks very sound. Does somebody have experiences with such methods? Thank you. Michael Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
