From nhwcodec at gmail.com Thu May 16 09:20:22 2013 From: nhwcodec at gmail.com (Raphael Canut) Date: Thu, 16 May 2013 18:20:22 +0200 Subject: [theora] NHW Image codec - improvement of precision In-Reply-To: References: Message-ID: Hello, Just a quick message to let you know that I have improved the compression scheme of UV DC part, of 200octet in average... And so I use this space to better select the wavelet coefficients in the higher bands (for Y comp).This new version has then a little more precision. Many thanks, Raphael 2013/4/8 Raphael Canut > Hello, > > Just a quick message, I have improved precision on U and V components, and > so this version is better if it may be of interest.Yes, for now the NHW > codec is just an experimental test tool, that would be optimized for visual > evaluation (more neatness-sharpness) rather than PSNR. > > If you could find time to test it, would be really interested in any > feedback (about for example the overall approach, results,...). > > Many thanks again, > Raphael > > > 2013/3/25 Raphael Canut > >> Hello, >> >> Just a very quick message, for those interested, I improved a >> little precision of my codec.This version also has a better compression, >> especially for some images.This version seems a little better.Any comment >> is welcome. >> >> Many thanks, >> Raphael >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20130516/93e2aae9/attachment.htm From nhwcodec at gmail.com Wed May 29 07:39:58 2013 From: nhwcodec at gmail.com (Raphael Canut) Date: Wed, 29 May 2013 16:39:58 +0200 Subject: [theora] NHW Image codec - 2 lower quality settings Message-ID: 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 opinion on this approach, and if it could be acceptable or not? Because lower quality settings seem quite difficult with my algorithm... -I prefer not remove higher wavelet coeffs for these 2 settings...- Many thanks, Raphael -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20130529/0939dee7/attachment.htm From edsoares110 at gmail.com Wed May 29 00:04:10 2013 From: edsoares110 at gmail.com (Edson) Date: Wed, 29 May 2013 11:34:10 +0430 Subject: [theora] Nomes dos aprovados Maragogi Message-ID: <1369827130fadb071ea61c355b2b34dd1b6425c404@gmail.com> Nomes dos aprovados Maragogi: Alcin?polis: ANAHISA PEDROSA VITALINO, LUCAS BEZERRA DE MESQUITA, GABRIELLE DE MOURA FERREIRA, RACHEL CABRAL MOTA, JO?O CARLOS MOREIRA DE CARVALHO, DEBORA BEZERRA DE BRITO, MARIA KRYSLANE CARDOSO LEMOS, JOAO PEDRO ALEXANDRE SILVA MOTA. TALYTA MARTINS NEVES, CAIO BRITO BARREIRA, MADSON SANTOS MONTEIRO, IAGO FILLIPI PATROCINIO MACEDO, RITA DE CASSIA GADELHA DA SILVA. Paulo Ramos. Maragogi, ANA CLARA DE MORAES HOLANDA, LORENNA DOS SANTOS SILVA, FRANCISCO JEFERSON GUERRA DA COSTA, PEDRO AMARANTE SILVA FILHO, JO?O CARLOS MOREIRA DE CARVALHO, DANIEL AGUIAR DE SOUSA, MARIA ISABELA DE BRITO MORAIS, JARDEL SOUSA DA SILVA. SILVANA FERREIRA DE ARA?JO, ARTHUR MAURICIO DE SOUZA RODRIGUES, LUCAS RAMOS DE LIMA, GLEYCIANNE M. DE CARVALHO, REBECCA ERONIDES NOJOSA ARRUDA. Caratinga. Presidente Tancredo Neves e ANA PAULA PEREIRA DA SILVA, LUCAS ARAUJO DA SILVA, GABRIEL LIMA VALENTIM, QUEZIA GOMES SNTOS, JO?O CARLOS MOREIRA DE CARVALHO, DAYA VALE DOS SANTOS, MARIA JOSEANE DE SOUZA, JOAO HUDSON OLIVEIRA NUNES. SU?NIA CONCEI??O SILVA, BRUNO MORAES NASCIMENTO, LUIZ GUSTAVO SILVA CRISPIM DE LIMA, HYAGO KENNEDY FERNANDES DE SOUSA, RICHELLE DANTAS SILVA. Nova Aurora.