Re: (ÈðÐÇÌáʾ-´ËÓʼþ¿ÉÄÜÊÇÀ¬»øÓʼþ)Re: [sane-devel] Image Compression doesn't support in SANE protocal

zf zfan333 at
Tue Aug 22 09:41:00 UTC 2006

    Yes, xsane can save file in a compressed format. But before that we must decompress the data from scanner and then transfer it to xsane and then xsane compress the image ....So we can't use the compressed data from scanner directly, then the scanner's speed is slow down.

----- Original Message ----- 
From: "René Rebe" <rene at>
To: "zf" <zfan333 at>
Cc: "OrgSane-Devel at Lists. Alioth. Debian." <sane-devel at>
Sent: Tuesday, August 22, 2006 5:19 PM
Subject: (ÈðÐÇÌáʾ-´ËÓʼþ¿ÉÄÜÊÇÀ¬»øÓʼþ)Re: [sane-devel] Image Compression doesn't support in SANE protocal

> On Aug 22, 2006, at 8:10 AM, zf wrote:
>>  I found no image compression support is added in SANE. When  
>> scanning with high resolutions such 600 x 600 dpi and uses color  
>> scan, the result image will be very large!
>>     So many scanners support compress transfer:scanner compress the  
>> image data and transfer compressed data to driver. In SANE the  
>> images transfered between backend and frontend are strict limited.I  
>> think it' better if SANE add some file transfer type like TWAIN.
> Most scanners do not support compression anyway. Such features are  
> only found in 5000 EUR and above devices. If you just want to save  
> files in a compressed format just use a decent application such as  
> xsane and not the example programs such as xscanimage ,-)
> Yours,

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