similar to: NHW Project - high compression -l4 setting

Hi David! Many thanks for your very encouraging and kind feedback!!! (Hope you don't mind that I made your post public on the Theora channel). I try to be the more sincere as I can in my posts.Some people suggested me to make demo pages to explain how the codec works step by step, and I realize that it would be good, because certainly it will show that the NHW codec is not that complex and

Hello Dave, Thank you very much for your support and your interest. Actually so few people took a look at the NHW Project, but with this version the NHW Project is becoming very interesting, it is royalty-free and very fast furthermore. Really if you could find time, I would be very interested in any opinion from the Xiph.org community! Cheers, Raphael 2018-04-28 21:40 GMT+02:00 Dave

Thank you so much Sir!!! If you have time, do not hesitate to let us know what you would think of the NHW Project.Any remark, opinion would be very welcome! Many thanks again! Best regards, Raphael 2018-04-28 23:02 GMT+02:00 Dave Johnson Games <davefilms.us at gmail.com>: > Cool, I'll check it out. > > On Sat, Apr 28, 2018, 3:09 PM Raphael Canut <nhwcodec at gmail.com>

Hello, I have improved quality for -l4 and -l5 high compression settings.These settings are now really better and very competitive, I now prefer them compared to x265 (HEVC). Update at: http://nhwcodec.blogspot.com/ I am also working on -l6 quality setting, I can simply increase quantization for it but I am not totally satisfied with this solution for now... Looking for more advanced processing

Hello, Just a very quick message to let you know that I have added a higher quality setting (-h2, +10Ko) and I have added now residual coding on the 512x256 wavelet image for the higher settings.Precision is a little better.-I also still apply the post-processing function on the 512x256 wavelet image for now.- Here is the link for the binaries (as I can not link them in my blog for now):

Hello, For those interested, I have added a -l8 "very high compression" setting to the NHW Project. I have added an experimental processing to remove details and preserve neatness.I have also now a fast estimation of entropy of wavelet coefficients and I use it accordingly to the image complexity but it is a very first version... With these new processings, the entropy coding schemes

Hello, I don't have advanced on the NHW Project this past month, but I have definitely validated its characteristics and this new version. The NHW Codec preserves or enhances image neatness and sharpness, which translates that on good quality images the NHW Codec is globally better than HEVC, and on degraded (with blur, artifacts) images it is worse than HEVC because it lacks of precision. I

Hello, I have finally added 2 lower quality settings for the NHW codec: -l1 (-5Ko) and -l2 (-10Ko).I use a quantization of 0.935 and 0.88 (kind of quantization), and I decrease residual coding on the first order wavelet image. I have updated the demo page: http://nhwcodec.blogspot.com/ . These 2 lower quality settings are still experimental.If you could find time, would be interested in any

You're welcome! On Tue, Jul 10, 2018, 4:50 AM Raphael Canut <nhwcodec at gmail.com> wrote: > Hello Dave, > > Thank you very much for your help! > > Cheers, > Raphael > > 2018-07-10 9:39 GMT+02:00 Dave Johnson Games <davefilms.us at gmail.com>: > >> Let me do some looking. >> >> On Mon, Jul 9, 2018, 4:55 PM Raphael Canut <nhwcodec at

Hello, These last 2 months, I have talked again with Monty Montgomery about the NHW Project and he told me that Xiph.org would like to encourage the NHW Project development.That's just great! I'll see what Monty will do on his side (and when he has time), but he also told me that the NHW codec has merits but there must be an effort to demonstrate them. The advantages, merits of the NHW

Hello, With -l5 quality setting, I have learned that I can increase wavelet coeff threshold to 12 in the HH band without noticeable difference in the reconstructed images.With this processing, I win in average 1Ko in the compressed .nhw files, and so I can raise the quantization for -l1->-l4 settings (0.935->0.955,0.88->0.9,0.87->0.89) and so these settings are now better, there is a

Hi Silvia, Thank you very much for your answer! Your opinion is much appreciated. Your advice is wisdom, but very quickly to rectify or precise my situation, I am finishing a 2-year job contract and there will maybe be a "vacation" period before the next contract (if I find one), so I would like to invest this time for the NHW Project, but that's right that image/video compression,

On Fri, 25 May 2012 14:00:01 -0500, <theora-request at xiph.org> wrote: > Message: 1 > Date: Fri, 25 May 2012 19:26:18 +0200 > From: Raphael Canut <nhwcodec at gmail.com> > Subject: [theora] NHW codec - improvement of precision > To: theora at xiph.org > Message-ID: > <CAKE58qHqSsrgJP4OX++eetMmT2WTv=8ZvfXoou7bWjOnbUSrAQ at mail.gmail.com> > Content-Type:

Raphael, Some 15 years ago I implemented limited functionality Theora in our cameras FPGA (it took me 6 month of hard labor), and then gave up - it is a very crowded space and it is difficult to compete with more advanced codecs. And for our other work we anyway need almost raw image data, so we are using JPEG-based JP4 format (https://community.elphel.com/jp4) that we originally developed for

Raphael, I do not believe it is possible to build a viable community around most hardware projects except super-universal based on very cheap/high-volume products like Pi or Arduino. We see the commercial benefits of Free Software/Open Hardware as it adds value to the hardware as users are ready to pay extra for the Freedom. Andrey ---- On Thu, 02 Dec 2021 12:59:34 -0700 Raphael Canut

Hi Andrey, Thank you for your answer.Actually, NHW is very low-power so I think it could be geared toward any hardware.But actually I don't have hardware skills, so NHW is not a real hardware project for now maybe? I agree with you that it is extremely difficult (for me) to build a community around NHW, I'm certainly very bad/underskilled at it.Any help is welcome! Cheers, Raphael Le

Hello, Just a quick message to correct what I have said in my previous post.It finally seems not that easy to code small wavelet coefficients to have a good precision, and SPIHT is certainly a very good algorithm for that, -and I know there are SPIHT experts that can make very good SPIHT-based codecs-.I have chosen a new and different approach, the multistage residual coding, so I will try to

Hello, I have improved quality for -l3,-l4,-l5 settings.I have diminished residual coding and I have raised again quantization.These settings are now better. Update at: http://nhwcodec.blogspot.com/ The NHW Project with this version starts to be competitive at high compression with x265. Any feedback welcome! Cheers, Raphael -------------- next part -------------- An HTML attachment was

Hello, Ok, and that's too many work to review a source code.In my codec, I have 3 compression schemes, I think 2 are not patented, but the third... I don't know.For the rest, I think my codec is patent-free (I don't use SPIHT,EZW,zerotree methods), even the wavelet transform is new and don't use the lifting scheme nor the convolution product. Else, if you found time to review the

Hello, I know there is no community around NHW, but I would have liked to know what you would like to see improved in the NHW codec.I know its results are not perfect for now compared to high-end AV1/VVC codecs for example, but could be ok giving its extremely fast speed.-However on high quality images, I notably like its good results because of its neatness.- Regarding things to improve, there