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[107.215.223.229]) by smtp.gmail.com with ESMTPSA id 6sm14070095oig.29.2022.01.29.14.14.44 for <9fans@9fans.net> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 29 Jan 2022 14:14:44 -0800 (PST) From: Bakul Shah Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 15.0 \(3693.60.0.1.1\)) Subject: Re: [9fans] licence question Date: Sat, 29 Jan 2022 14:14:44 -0800 References: <16433324650.ff90B.935638@composer.9fans.topicbox.com> <16433713090.e62E5Cc03.507002@composer.9fans.topicbox.com> <16434613850.BC38c.59069@composer.9fans.topicbox.com> <16434652910.557dFF03.267022@composer.9fans.topicbox.com> To: 9fans <9fans@9fans.net> In-Reply-To: <16434652910.557dFF03.267022@composer.9fans.topicbox.com> Message-Id: X-Mailer: Apple Mail (2.3693.60.0.1.1) Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: e1cf8608-8150-11ec-827c-ea3d02fb6084 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UM2UwN2JmZGYyNjNhODNjOC1NZGQxOTliOTM0YjkxMDZjOGJlZjZk?= =?UTF-8?B?ZjA3Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Mdd199b934b9106c8bef6df07:1:_rLECyysVsFbSToUzR_Uaoa3d49eaA-o_LTb59Dcm4s Note that djvu would compress things very nicely. A full page 300dpi magazine color page that may be 25MB uncompressed will compress down to 40K-80K or so and be very legible, much more so compared a similar sized jpeg compressed image. The current OSS djvu library is GPL but as far as I know the original AT&T patent on the djvu technology has expired. If anyone wants to reimplement it with a more permissive license! The benefit is that there are a lot of existing djvu encoded documents. [Note: if anyone does decide to reimplement djvu, they should not just take my word for it but verify that the djvu patent(s) have indeed expired] > On Jan 29, 2022, at 6:08 AM, ibrahim via 9fans <9fans@9fans.net> wrote: >=20 > A great amount of this size is caused by hand written sample solution sca= ns for past exams provided as 300dpi images (png or ppm). Most of my notes = are handwritten cause this way to provide solutions for exam questions is f= aster and simpler. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T3e07bfdf263a83c8-Mdd199= b934b9106c8bef6df07 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription