similar to: NHW Image codec

selected for the great NETVC project.It complicates a little the future of the nhw codec, and it is furthermore nearly to end of life, with more than 3 years on the Theora channel without catching attention. I still think that the NHW codec could be useful for portable devices, as it is very fast with a low power consumption, and with more neatness/sharpness.If you are developing such a project

selected for the great NETVC project.It complicates a little the future of the nhw codec, and it is furthermore nearly to end of life, with more than 3 years on the Theora channel without catching attention. I still think that the NHW codec could be useful for portable devices, as it is very fast with a low power consumption, and with more neatness/sharpness.If you are developing such a project

I don't mind at all. I imagine there are more people like me out there who have been following your work, but haven't said anything. I agree that a series of pages explaining how things work may lead to more contributions. At the very least it would lead to more people being better educated on how wavelets work in image compression. But, this is your project, if you don't have the

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, I don't have advanced (and worked) on the NHW codec recently.I however compiled the codec with gcc -O3 setting (the binaries are available from my demo page: http://nhwcodec.blogspot.com ) and just with this optimization (no mmx, sse, avx instructions,... ) the NHW codec is 6x faster to encode and 4x faster to decode than WebP.As I state that my codec is royalty-free, fast with more

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 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 gmail.com> wrote: > >> Hello Dave! >> >> Thank you very much for your answer! >> >> You're right.I have thought

Hello, For those interested, I have added a -l4 high compression setting to the NHW codec ( http://nhwcodec.blogspot.com/ ).This setting is very experimental, I have boosted the sharpness for this one, but it can lack of precision on low contrast areas. This setting still maintains a good neatness and when it will be validated, I will then make a new 0.1.4 version for the NHW Project. High

Hello, Yes, that's right, I had the remark that if I say that the NHW codec would have more neatness/sharpness, this must be also accompanied with objective measure.But the neatness/sharpness measure is quite complex to define, and implement. But at classical visual review step, I would find that the NHW codec would be less blurred (maybe PSNR would like blur?...) with more

Hello, I have improved a little the NHW codec.I have improved the dequantization in the wavelet HH band, and little improved the -l2 (and lower) quality setting.I have also added a -l3 lower quality setting (-15Ko, exp), I have increased the quantization for this other setting, and I start to remove higher wavelet coefficients, but this is not optimal... The artifacts start to be noticeable for

I think Apple is somehow "attached" to the MPEG group. They control the "pools" too. Your codec sounds great. Google could -- if they wanted to -- use it but they have Web^M and webP. Look to Asia. Asus has just launched a new phone. ?? On Mon, Jul 9, 2018, 3:14 PM Raphael Canut <nhwcodec at gmail.com> wrote: > Hello, > > I don't have advanced on the NHW

Hello, For those interested, I have improved the entropy coding scheme for wavelet coeffs compression.This scheme is now more complete, it is also faster, the compression gain is around 50-100octets, I would have expected more..., but it is getting harder to save bits for this part.Update at http://nhwcodec.blogspot.com/ . Now the discussions on video compression will be certainly focused on the

Hello all, Finally find some time to get back to the NHW Project.I was thinking about making a technology demo, and I wanted to highlight the uniqueness of the NHW codec that is neatness/sharpness preserving or enhancement.With my eyes, I can see that the NHW codec has more neatness/sharpness than the other codecs (x265, x264, WebP, Rududu, JPEG,...), but for a demo there must be objective

Hello, Definitely not any (constructive) comments on the NHW Image codec? According to my tests, it can compare good with reference codecs like x264 intra and WebP. Yes, the codec is still experimental and is optimized for visual (subjective) evaluation, not PSNR.Its main feature is again that it would have a little more neatness/sharpness and a little less precision (residual coding is applied

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:

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

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,

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

Hello, I have re-tested -l4 high compression setting and it's clear that it lacks of precision on degraded, rather blurred images. So I don't know if it is a good idea to base the other lower quality settings (-l5,-l6,...) on -l4 setting.I have tested the NHW codec against x265, x264, Daala, WebP, Rududu, DLI and it's clear that at high compression these very good codecs have more

Hello, I don't have advanced on the NHW codec, but now, as a lot of people, I am following the AOMedia AV1 codec.Just a (late) update of my previous post, there won't be problem in AOM AV1 with the CABAC scheme, as the codec will use Daala's multi-symbol entropy coder and/or ANS.That's great! I have even read on the wiki page, that AV1 will use Daala's PVQ as quantization