KNLMeansCL: OpenCL NLMeans de-noising algorithm [2018-01-29]

[Khanattila]

Another possibility is to use mahalanobis distance but noise covariance matrix is required.

[feisty2]

I'd just get green channel to do the weighting stuff, cuz green channel is generally the channel got the highest quality in real life images, least noisy, and got more details than RB.

[feisty2]

request: can you add an extra reference clip option (default = input clip) to do the weighting calculation?
like "prefilter" for mvtools, you can use it to do a lot of things, like, use a blunt and aggressive filter to remove nasty artifacts like dot crawl, then get the dif between the filtered clean clip and the original noisy clip, then filter the dif with delicate filters like nlmeans, weights calculated from the clean clip, then add the dif back to the clean clip and you can remove the artifacts and save a lot of details from this

[Khanattila]

Originally Posted by feisty2

request: can you add an extra reference clip option (default = input clip) to do the weighting calculation?
like "prefilter" for mvtools, you can use it to do a lot of things, like, use a blunt and aggressive filter to remove nasty artifacts like dot crawl, then get the dif between the filtered clean clip and the original noisy clip, then filter the dif with delicate filters like nlmeans, weights calculated from the clean clip, then add the dif back to the clean clip and you can remove the artifacts and save a lot of details from this

I don't know if you can get good results, but I will add this feature.

[feisty2]

Originally Posted by Khanattila

I don't know if you can get good results, but I will add this feature.

amazing!
well, we'll have to test it first to get the answers

[sl1pkn07]

Hi

EDIT3: I've open a git repo with the code and a small configure/makefile. with the patches applied and some more things

https://github.com/sl1pkn07/KNLmeansCL

greetings

[GMJCZP]

Hello friends:

He wanted to know if there is a possibility to use this filter without a video card. I have a PC Foxconn G41MX-F 2.0 with an Intel Core 2 Duo E4400 processor with Windows XP SP3 installed, so the only way to have OpenCL was installed here:

http://www.wings3d.com/forum/showthread.php?tid=174

I installed the a) package (ATI Stream SDK v2) but get the following error message:

"opencl device not available!"

And I tried all the alternatives (DEFAULT, CPU, GPU, ACCELERATOR) and nothing.

Does the SDK package are not drivers or the correct version? What am I doing wrong? Do you simply can not use this plugin without video card? Thanks.

[feisty2]

remove winxp and get win10

[sl1pkn07]

I tried to install 2 OpenCL vendors, one for Nvidia GPU and Intel only for CPU

http://sl1pkn07.wtf/paste/view/696b9533

when set 'device_type="CPU"', the "decoding" is slowwwwwwwww like ass ("spected", in dual Xeon X5650 (24Threads))

but when set 'device_type="GPU"', the VSpipe get segfault

[967221.403446] vspipe[8062]: segfault at 7f949359cb88 ip 00007f949359cb88 sp 00007ffd9162c448 error 15 in libc-2.21.so[7f949359c000+2000]

but when no set 'device_type=', knlmeans use the GPU.

how to debug this?

knlmeans is builded with

CXXFLAGS = -O2 -std=c++11 -Wall -Wno-unused-local-typedefs -I. -I./include -march=native -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/vapoursynth
LDFLAGS = -shared -fPIC -Wl,-O1,--sort-common,--as-needed,-z,relro

in linux with
gcc 5.1.0
ocl-icd 2.2.7 (OpenCL loader)
nvidia 352.21 beta drivers
Cuda 7.0.28
Intel OpenCL for CPU 15.1 (5.0.0.57)

[Khanattila]

Originally Posted by GMJCZP

Hello friends:

He wanted to know if there is a possibility to use this filter without a video card. I have a PC Foxconn G41MX-F 2.0 with an Intel Core 2 Duo E4400 processor with Windows XP SP3 installed, so the only way to have OpenCL was installed here:

http://www.wings3d.com/forum/showthread.php?tid=174

I installed the a) package (ATI Stream SDK v2) but get the following error message:

"opencl device not available!"

And I tried all the alternatives (DEFAULT, CPU, GPU, ACCELERATOR) and nothing.

Does the SDK package are not drivers or the correct version? What am I doing wrong? Do you simply can not use this plugin without video card? Thanks.

1) Sure. You can use it without a graphics card.
2) You should install the Intel driver: https://software.intel.com/en-us/art...opencl-drivers

[Khanattila]

Originally Posted by sl1pkn07

I tried to install 2 OpenCL vendors, one for Nvidia GPU and Intel only for CPU

http://sl1pkn07.wtf/paste/view/696b9533

when set 'device_type="CPU"', the "decoding" is slowwwwwwwww like ass ("spected", in dual Xeon X5650 (24Threads))

but when set 'device_type="GPU"', the VSpipe get segfault

[967221.403446] vspipe[8062]: segfault at 7f949359cb88 ip 00007f949359cb88 sp 00007ffd9162c448 error 15 in libc-2.21.so[7f949359c000+2000]

but when no set 'device_type=', knlmeans use the GPU.

how to debug this?

knlmeans is builded with

CXXFLAGS = -O2 -std=c++11 -Wall -Wno-unused-local-typedefs -I. -I./include -march=native -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/vapoursynth
LDFLAGS = -shared -fPIC -Wl,-O1,--sort-common,--as-needed,-z,relro

in linux with
gcc 5.1.0
ocl-icd 2.2.7 (OpenCL loader)
nvidia 352.21 beta drivers
Cuda 7.0.28
Intel OpenCL for CPU 15.1 (5.0.0.57)

1) Floating Point Performance: 57 Gflops (Xeon X5650) vs 2258 (GTX 760)
2) VSpipe get segfault... Maybe it's a problem in the code, I need to check.

[Khanattila]

Originally Posted by sl1pkn07

Hi

EDIT3: I've open a git repo with the code and a small configure/makefile. with the patches applied and some more things

https://github.com/sl1pkn07/KNLmeansCL

greetings

EDIT2. Taken. https://github.com/Khanattila/KNLMeansCL

[GMJCZP]

Originally Posted by Khanattila

1) Sure. You can use it without a graphics card.
2) You should install the Intel driver: https://software.intel.com/en-us/art...opencl-drivers

Those drivers are for W7 SP1 and later, why did I mention all my PC settings and ATI package, which is supposedly the only one compatible with XP and Intel.

There will be a solution?

[Bloax]

You might want to just use the original TNLMeans instead of trying to make your CPU operate through OpenCL so that you can run an OpenCL remake of TNLMeans.

[Groucho2004]

Originally Posted by Bloax

You might want to just use the original TNLMeans instead of trying to make your CPU operate through OpenCL

Indeed. On a C2D 4400 alone, KNLMeansCL and TNLMeans would probably perform about the same. TNLMeans may even have the edge.
However, all this is rather pointless because NLMeans on this CPU will be too slow for any practical use.

[Khanattila]

Originally Posted by GMJCZP

Those drivers are for W7 SP1 and later, why did I mention all my PC settings and ATI package, which is supposedly the only one compatible with XP and Intel.

There will be a solution?

As suggested, you should try using the CPU. It's slow, but it should work.

[GMJCZP]

The problems that should be happening is that the ATI package is incompatible with the plugin or too old, that is why the KNLMeans does not work for me (CPU or another mode). Thanks anyway.

[feisty2]

any news about "reference clip" feature?

[Khanattila]

Originally Posted by feisty2

any news about "reference clip" feature?

It's almost ready.

[sl1pkn07]

[del]please send me your github user[/del]

oh, you forked it. then i can remove from my repository?