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5th March 2011, 01:19 | #1 | Link |
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Join Date: Feb 2011
Location: Lisbon, Portugal.
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Picture quality (in terms of Levels or something like that)
Hello everyone,
I'm a newbie and very glad to join any forum that partly regards such marvelous technology as Avisynth and VirtualDub. I have this little challenge I believe is simple but I cannot overcome it. How do I achieve the picture quality of case2 starting from case1? Here are the frames: case1 http://img594.imageshack.us/f/case1q.png/ case2 http://img52.imageshack.us/i/case2.png/ Is there any filter that does that? I've tried the Levels filter, of course, but there's more to it. Does anyone know of a 'detailer' filter for B&W? (I'm not sure it is required to achieve the quality of case 2 but I'm interested anyway). Any help would be very much appreciated. Best regards, Daniel Calado. |
5th March 2011, 17:10 | #3 | Link |
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Welcome to the forum,
The 2 pics aren't from the same frame or even the same source, and there's no telling whether or not what works for a single frame works for the rest of the movie. In addition, I don't know if you did anything to the frames when taking the pics and converting to RGB. but: Crop(20,0,-6,-20) LanczosResize(640,480) Levels(1,0.44,255,0,255,Coring=False) Tweak(Bright=19,Cont=1.27,Coring=False) will get you in the general ballpark. To help you in the work you can put on: Histogram() and/or: ColorYUV(Analyze=True) Limiter(Show="Luma") If by 'detailer', you mean a sharpener, AviSynth has a number of sharpeners available. |
7th March 2011, 22:46 | #4 | Link | |
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Thank you very much for your help, Stereodude and Manono.
Sorry for the delay, I haven't had time to post. Yes, it needs to be resized and croped but I only meant picture quality (I was too lazy to resize and crop before uploading the frame). Stereodude, case 2 is compressed indeed but the picture in terms of levels (or something like that) looks 'Film Noir' and more professional. case 1 to me looks like something incomplete (I get a tremendous feeling that I'm only watching greys, no blacks at all). Manono, thanks for your effort, I will try everything you sugested and will get back to this thread. Quote:
Both sources are from different filmprints (the credits are different). But the uploading images correspond to the same frame, the thing is: compression and levels changed the expression on the actor's face a lot. As I understand it, detailer doesn't necessarily mean sharpener. Sometimes, sharpening only adds noise to the pic. This is something else that I once heard of. It probably is something that involves edges. That's my opinion. But I guess I'll ask the very person who mention it. Right now, I will try what you offered me. Thanks a lot for everything. All the best. |
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23rd April 2011, 18:25 | #5 | Link |
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Join Date: Feb 2011
Location: Lisbon, Portugal.
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Many Thanks.
Manono,
Sorry for this tremendous delay, but have been busy as hell lately. I tried your settings and they were just great but unfortunately only great with that particular shot, other shots diverge from your solution. Anyway, I decided to just buy that broadcast recording in DVD-video from a collector and will mask the network logo using the other print (the supposedly official DVD). Very grateful for your help. Take Care and Happy Easter, Daniel. |
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detailer, filter, levels, photography, virtualdub |
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