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How to improve low light image quality from iso 12800 and 6400
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  • thanks for the post

  • @sparticos I agree, re-exporting with Handbrake's 3D noise reduction worked very well for a recent project of mine. I used the medium setting which cleaned up the image rather remarkably with no apparent artifacts, it held up to viewing on a 60inch HD screen with no problem. If you don't mind having an mp4 file after processing, Handbrake is a great solution for no-cost video noise reduction.

  • Fantastic work @apefos !! Are the settings for ETC mode based on 720p or 1080p image size?

  • I did some tests using the full sensor (not etc) settings i saved for 1080 on some 720 footage and the noise reduction worked great (the 720 footage was on a 1080 timelime). The ETC settings i saved are for 1080, but you can try them on 720 to see if it works, put the ETC 720 on a 1080 timeline as i did and resize it 150% to fit the screen.

  • @apefos Great thread and many thanks for the presets.

    Never used Neat Video but it's time to start. I have a lot of underwater shots in near dark conditions shot between 800 and 1250 ISO. DO you think that your preset could be used also for underwater shots? Or would be better using some area of my frames which has only the blue ocean?

  • I think the noise profiles and noise presets will work, use the last uploaded they are very fine calibrated. But you can compare them to your own settings.

  • thanks apefos!

    Could you possibly post some B/W presets/profiles?

  • If your footage is in color, you can use the same presets and remove the color after denoise. If you want to remove the color before denoise or if you have a bw footage from camera I think the presets/profiles will work because I believe the luminance noise will be the same. Also you can pull down the two color sliders in the settings after you load the preset. Give it a try.

  • Cheers @apefos!

    That is "um tutorial do caralho!!!" :)

    Yet I have some doubts about how you filter.

    Shouldn't the filtration amounts be red > blue > green as there are channels that are noisier than others? Or does the profiling naturally account for that?

    This post: http://www.personal-view.com/talks/discussion/805/gh2-grain/p1 also has some good insight into NR and NI.

  • Cheers, mas como se diz em portugues: "menos, menos"

    When I captured the noise, shooting the greyscale pattern, I think the camera also captured the differences in RGB and I saved the profiles in Neatvideo in Auto mode, so I think the software already dealt with that.

    The presets was fine tuned in manual mode.

    there are two files to load in neatvideo, the profiles and the presets

    profile = the noise information from camera and how the software interprets it

    preset = the adjusts to clean the noise

  • Ivy Bridge 3570k OC 4.2GHZ Turbo Off + Gigabyte GTX650Ti 2GB 1033MHZ

    Real World test rendering footage (Radius 2, 1920x1080p):

    • Cpu only 4 cores = 3.51 fps
    • Cpu 4 cores + GTX650Ti 2GB = 4.54 fps

    1440 frames footage (1 minute 24p footage) Cineform 422 I frames 1920x1080p file

    • Cpu only 4 cores render time = 6min50sec
    • Cpu 4 cores + GT650Ti 2GB 1033MHZ render time = 5min17sec

    (1.03 fps increase) 1.273x speed increase compared to cpu only

    The real world performance is slower than Neatvideo benchmark, but is pretty good.

    I chose Radius 2 to do the tests because it is the best results for my denoise from GH2 footage

    Benchmarks from Neatvideo Optimize tool (shows more fps than real render):

    One curious observation: the benchmarks for Cpu only 2 cores and Cpu 2 cores + Gpu is very close to the real render speed.

    Frame: 1920x1080 progressive, 8 bits per channel, Radius: 2 frames Running the test data set on up to 4 CPU cores and on up to 1 GPU

    • CPU only (1 core): 1.75 frames/sec
    • CPU only (2 cores): 3.55 frames/sec
    • CPU only (3 cores): 4.98 frames/sec
    • CPU only (4 cores): 6.02 frames/sec
    • GPU only (GeForce GTX 650 Ti): 3.86 frames/sec
    • CPU (1 core) and GPU (GeForce GTX 650 Ti): 3.66 frames/sec
    • CPU (2 cores) and GPU (GeForce GTX 650 Ti): 4.52 frames/sec
    • CPU (3 cores) and GPU (GeForce GTX 650 Ti): 6.06 frames/sec
    • CPU (4 cores) and GPU (GeForce GTX 650 Ti): 7.25 frames/sec

    Best combination: CPU (4 cores) and GPU (GeForce GTX 650 Ti)

    Frame: 1920x1080 progressive, 16 bits per channel, Radius: 2 frames
    Running the test data set on up to 4 CPU cores and on up to 1 GPU

    • CPU only (1 core): 1.43 frames/sec
    • CPU only (2 cores): 3.03 frames/sec
    • CPU only (3 cores): 4.22 frames/sec
    • CPU only (4 cores): 4.93 frames/sec
    • GPU only (GeForce GTX 650 Ti): 3.73 frames/sec
    • CPU (1 core) and GPU (GeForce GTX 650 Ti): 2.71 frames/sec
    • CPU (2 cores) and GPU (GeForce GTX 650 Ti): 4.37 frames/sec
    • CPU (3 cores) and GPU (GeForce GTX 650 Ti): 5.59 frames/sec
    • CPU (4 cores) and GPU (GeForce GTX 650 Ti): 6.33 frames/sec

    Best combination: CPU (4 cores) and GPU (GeForce GTX 650 Ti)

    Frame: 1920x1080 progressive, 32 bits per channel,
    Radius: 2 frames Running the test data set on up to 4 CPU cores and on up to 1 GPU

    • CPU only (1 core): 1.73 frames/sec
    • CPU only (2 cores): 3.45 frames/sec
    • CPU only (3 cores): 4.81 frames/sec
    • CPU only (4 cores): 5.59 frames/sec
    • GPU only (GeForce GTX 650 Ti): 3.76 frames/sec
    • CPU (1 core) and GPU (GeForce GTX 650 Ti): 3.28 frames/sec
    • CPU (2 cores) and GPU (GeForce GTX 650 Ti): 4.65 frames/sec
    • CPU (3 cores) and GPU (GeForce GTX 650 Ti): 6.29 frames/sec
    • CPU (4 cores) and GPU (GeForce GTX 650 Ti): 6.9 frames/sec

    Best combination: CPU (4 cores) and GPU (GeForce GTX 650 Ti)

  • does anyone has any neat video profile for the new GH3 ?

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