similar to: NHW Project - improvement of very high compression

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

Hello, I think I have nearly validated the -l8 "very high compression" setting, I have started to work on -l9 setting, and I have just tested these ones against x265 (HEVC), and on rather good quality images, they are very competitive, that's not a joke!!! I have tested -l8 quality setting on 30 rather good quality images against x265, and on 20-22 images I prefer the results of the

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, 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

Hello, For those interested, I have improved -l8 high compression quality setting.This setting is now better, more precision.Files are also a little smaller and I don't have touched the entropy coding schemes, so we can still save 2KB per .nhw compressed file. More at: http://nhwcodec.blogspot.com/ I am also working on -l9 quality setting, but it is not ready for now, notably as x265 (HEVC)

Hello, I am still progressing with very high compression and I have corrected a processing, so now very high compression (-l10 to -l13 quality settings) has really better precision and so better quality. I have also released a first draft of a new -l14 very high compression quality setting. More at: http://nhwcodec.blogspot.com/ Just a remark, the entropy coding schemes start to be less

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, Just a quick message to let you know that I have made good quality improvements for very high and extreme compression of the NHW Project (-l8 to -l15 quality settings).The NHW Project starts to be really competitive with x265 (HEVC) at these very high compression ratios.I even find the NHW Project visually better than x265 (HEVC) for mid and high compression! I have also improved encoding

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

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, 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, 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

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 have made a new version of NHW.This one has more neatness and more precision for -l4 to -l11 quality settings, which are the general-purpose compression settings.It is actually just one parameter better tuning based on my visual evaluations (no real new developments... it was 14 months now that I did not develop the NHW Project...). Files size is just a little bigger, but we can still

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, Just a quick update to let you know that I have corrected many bugs in the NHW Project, and notably one bug, spotted by skal (Google WebP), which caused compilation errors or warnings.I have also corrected a bug in the -l8 quality setting and so now compression is better.The -l8 quality setting is now very competitive with x265 (HEVC)! Update at: http://nhwcodec.blogspot.com/ As always,

Hello, I have improved the results of the NHW codec and so released a new version.This one has more neatness and more precision, and so is more interesting. -As usual, I don't have improved for now the entropy coding schemes, and so we can still save in average 2.5KB per .nhw compressed file, and even more with Chroma from Luma for example.- More at: http://nhwcodec.blogspot.com/ Any

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