poopity poop
14th February 2002, 22:43
Many of you may know me, I encoded Kenshin on Dalnet and a bunch of other movies. Those of you who know me may be following my advice on encoding anime and how to get rid of noise in mpeg-2-->DivX conversions.
Currently I'm in the process of making an entire web page devoted to noise reduction, examples recommendations and settings. Its going to be very large and complete, I suggest you check it out in the comming weeks.
I have a problem:
As many of you may know, you should use prcise bicubic for enlarging, and prcise bilinear for reducing resolutions, this is the general concensus. Bilinear tends to smooth the image...just...slightly, and bicubic tends to sharpen it....just...slightly.
As I was accually testing all these methods of noise reduction (accually I'm in the middle of it while I right this) I came accorss something rather peculiar. Just for the fun of it I wanted to see how the results of these tests were changed if I changed the resize filter to bicubic before appliying the noise reducing filter. I was absolutly AMAZED at the difference. Then I thought I was just seeing things, so I brought the image over to photoshop and blew it up hue on my 19" moniter. Wow what a difference bicubic makes.
Now many will respond defending bilinear but I would like to introduce you to a quick website I just made showing the differences.
When you click on a link below, clikc on the picture to switch to bicubic, then again to switch back, then again to go to bicubic, etc, etc, and you may see the differences I noticed:
1. The edges are cleaner, tighter and darker
2. The detailed is not nearly as smeared
3. The large color expanses may have slightly more "noise" but...then again I'm just going to get rid of it by applying the many noise reducing filters I'm testing.
So I ask everyone? Why is bilinear better, when clearly(by the links below)that the three things listed above hold true
These links contain true, ENOURMOUS .bmps they will take a LONG time to load, let them load then keep clicking
http://web.syr.edu/~tjmyers/Precise_bilinear.html
Currently I'm in the process of making an entire web page devoted to noise reduction, examples recommendations and settings. Its going to be very large and complete, I suggest you check it out in the comming weeks.
I have a problem:
As many of you may know, you should use prcise bicubic for enlarging, and prcise bilinear for reducing resolutions, this is the general concensus. Bilinear tends to smooth the image...just...slightly, and bicubic tends to sharpen it....just...slightly.
As I was accually testing all these methods of noise reduction (accually I'm in the middle of it while I right this) I came accorss something rather peculiar. Just for the fun of it I wanted to see how the results of these tests were changed if I changed the resize filter to bicubic before appliying the noise reducing filter. I was absolutly AMAZED at the difference. Then I thought I was just seeing things, so I brought the image over to photoshop and blew it up hue on my 19" moniter. Wow what a difference bicubic makes.
Now many will respond defending bilinear but I would like to introduce you to a quick website I just made showing the differences.
When you click on a link below, clikc on the picture to switch to bicubic, then again to switch back, then again to go to bicubic, etc, etc, and you may see the differences I noticed:
1. The edges are cleaner, tighter and darker
2. The detailed is not nearly as smeared
3. The large color expanses may have slightly more "noise" but...then again I'm just going to get rid of it by applying the many noise reducing filters I'm testing.
So I ask everyone? Why is bilinear better, when clearly(by the links below)that the three things listed above hold true
These links contain true, ENOURMOUS .bmps they will take a LONG time to load, let them load then keep clicking
http://web.syr.edu/~tjmyers/Precise_bilinear.html