similar to: NHW new release - bug fix

Hello, For those interested, I have released the NHW v0.3.0-rc29 new version. I continue to fine-tune the nhw_kernel weights.This new version has then more precision and a better visual quality. I have made a "deeper" visual review at -q14 compression setting which is "high" compression, and I find now that at this setting NHW has a competitive precision with AVIF and VVC.If

Hello, For those interested, I have made a new version of NHW.This one has more precision and a little more neatness. I still find that NHW has a very good neatness -which I find visually more pleasant than AVIF and x265 for example-, and NHW is still extremely fast to encode/decode, faster than JPEG! There are still many improvements that can be done, first one is to adapt to any arbitrary

Hello, Could some of you take a look at the image comparison between the NHW Project and x265 (HEVC) at high compression, available here: http://nhwcodec.blogspot.com/ . I would be very very interested in your opinion, and it would help me to perfect the NHW Project.For me the NHW Project has more neatness, and x265 has more precision. Else, I was a little lazy these past months, as I

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

Hello, The -l8 "very high compression" setting I posted was not really good.Now I have corrected and improved it, and now the -l8 quality setting is really better, more precision and more neatness. I think now it is a good setting, and I have started to compare it with x265 and it can be now competitive. More at: http://nhwcodec.blogspot.com/ Do not hesitate to test it and give me

---------- Forwarded message ---------- From: Raphael Canut <nhwcodec at gmail.com> Date: 2017-11-30 14:22 GMT+01:00 Subject: Re: [theora] NHW Project - speed comparison with x265 To: fboehm <fboehm at aon.at> Hi Franz, Many thanks for your answer!!! > I appreciate your enthusiastic work on such a complex project like writing a video codec Yes, for now the NHW codec is more an

Hello, I wanted to let you know that I have released a new -l13 very high compression quality setting for the NHW Project (and we can still save 2.5KB per .nhw compressed file). I find this -l13 quality setting very competitive (I will maybe use some of its processing to improve -l12 setting).Compared to x265 (HEVC), I have tested on 15 rather good quality images, and I visually prefer the

Hello, Just a quick message to let you know that I have really improved very high compression of the NHW Project from -l8 to -l13 quality settings, and we can still save 2.5KB per .nhw compressed file. Actually I am new to very high compression, it is just 3 months that I am working on it (I put on pause the NHW Project from August 2013 to February 2018 )... And I realize that very high

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

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 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 developped a (simple) NHW Neatness Metrics to measure neatness between 2 images: the studied one and the reference one. The results are the significance of the neatness on the whole image and the average neatness amount. This work is experimental and could be incomplete for this first version! But it shows that the NHW Project has more neatness than the other

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

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, Just a word to let you know that I have improved -l7 high compression quality setting, thanks to a new processing and I have also corrected an error in the residual coding.Now it has more neatness/definition.Files size is also a little smaller (and please keep in mind that the entropy coding schemes are not optimal for now, so we can save 1.5Ko-2Ko per .nhw file). Actually I find -l7

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, I have added a new -l16 "extreme" compression quality setting to the NHW Project. This new -l16 quality setting is surprisingly good actually, because I find it better on some images than -l15 quality setting whereas files size is smaller.I notably find this new -l16 quality setting better than x265 (HEVC). More at: http://nhwcodec.blogspot.com/ We can still save 2.5KB per

Hello, Just a quick note, some people told me in the past that I must adapt NHW to any image size else nobody will consider and use it.That's certainly right, but again I am working on NHW on my spare time and this task is too exhausting for me.Also, I feel now that it is useless, as I have read that in the very next months, the great AVIF and JPEG XL will be definitely adopted everywhere on

Hello, I forgot in my last reply that my DWT implementation can be speed up, for example I'm doing for now: for (;_X1<_E_;_X1++,_RES+=2) //dilatation { _RES[0]=_X1[0]<<3; _RES[1]=(_X1[1]+_X1[0])<<2; } then for (;_X2<_E_;_X2++,_RES+=2) //details { _RES[0]-=(_X2[1]+_X2[0])<<1; _RES[1]+=6*_X2[1]-_X2[2]-_X2[0];

Hello, Very quickly, for those interested, I have released the NHW v0.3.0-rc31 new version. I continue to fine-tune the nhw_kernel weights.This new version has then more precision and a better visual quality. Normally this new version gains that little extra precision, so normally at -q14 setting, NHW should have a competitive precision, while still keeping its neatness. From -q12 to -q8