Neat Video & Neat Image community

RIUM+ wrote:Just so you know, if you have a DirectX9-compatible 3D card use Media Player Classic....

This was exactly what I posted in earlier message. With screenshots included too. Noise reduction and other image/pixel manipulations is certainly possible with pixel shaders.

pinobot wrote:http://www.aureliosoft.com/

Quite effective way of showing that it is possible. Though the program itself wasn't very useful =). It could handle quite large images with no slowdown at all though.

A comparison between CPU and GPU. http://gamma.cs.unc.edu/GPUSORT/results.html Not that sorting is really about images :). Still, there are plenty of examples of pixel shaders being used for image manipulation. Apple has its Core-Image which allow photoshop-like applications to manipulate images th...

Noise in a CCD/CMOS sensor is electrical noise, just like you get noise in other electrical equipment (your stereo for example). The ISO setting would be about the equivalent to trying to play a very faint signal through the speakers by turning up the volume. You get more noise. The noise from the s...

Actually I do not know if there would be any real benefits. But as processing a 8 bit image with Neat Image in 16 bit mode do have benefit, I thought that 32bit might give a slight advantage as well. Also, 32bit mode shouldn't use any more processing power anyway, should it? But as you said, even 16...

Will Neat Image support 32 bits per channel with Adobe Photoshop CS2?

I have noticed color shift too. It isn't a lot so I think it is simply because the noise from the camera is actually tinting the image. When NI remove this noise the tint has changed back.

Sometimes it would be nice to have it not do this though.

A limited sharpen feature would be great. It would reduce halos when doing heavy sharpening.

http://forum.doom9.org/showthread.php?threadid=84196 they have illustration and discussion about its benefits.

I have just observed that the Media Player Classic (http://sourceforge.net/projects/guliverkli - the CVS code) has support for using Pixel Shaders of DirectX 9 GPUs to render video effects in real time. for example sharpening and other video effects. I know NI isn't a video processing tool, but NI c...

greenboy wrote:PNG with its six filtered/compressed options (as long as you are in 24-bit or less) is nice too : }

PNG support at least 16bits per channel, including the alpha channel. That would mean 48 or 64bits per pixel.

I think there is a thread about using NI's command line interface instead. You could do a real batch process and call NI for each file. Use something like this: NeatImage.exe input output profile preset You could then do a for loop that did this for every image, or you can use AviSynth to render a s...

You can also try to add some noise manually. I sometimes add monochrome noise to a picture as the last step after sharpening to give it a pleasing look. It is highly subjective of course. But in your case it might do what you need.

Yes, one slowdown would be the transfer back from the GPU to the system memory. The AGP bus is significatnly slower in reverse direction. If you want to see some examples you should look on the Apple presentation of OSX Tiger. http://www.apple.com/quicktime/qtv/wwdc04/ About 1 hour and 5 minutes int...

Would it not be possible to use the pixel shaders in modern GPUs to remove noise? The GPU's performance for image data manipulation is far better than the CPU, even if you have a Pentium 4 or Athlon 64. The Mac OSX Tiger is using this technique and apple say they want Photoshop in Mac to use this to...

I think it would be possible to create better and more advanced noise profiles using temporal noise analyzing on the test target. Scan or photograph the test target N times. Then analyze the noise how it apears on each image. That way it would be possible to more pricicely see how noise and patterns...