Sony Ericsson / Sony : Software, Firmware and Drivers : Modded Camera Driver for k800i/k810i
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On 2008-08-13 12:01:42, czaki91 wrote:
It's funny:
Raiderski and Withan have ~70kb
Goldmix and N1 have ~260kb
It`s most likely because of the difference in JPEG compression settings...
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Posted: 2008-08-13 12:23:49
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yes but biggest size=more quality ??
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Posted: 2008-08-13 12:28:05
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On 2008-08-13 12:28:05, czaki91 wrote:
yes but biggest size=more quality ??
It`s not necessary...
But in most cases could be cause for bigger noise or camera crashes...
Raiderski`s explanation of JPEG compression:
On 2008-07-30 23:56:05, Raiderski wrote:
SE phones are equipped in very nice algorithm and great feature - variable compression. it is seeking the best quality % level. question: seeking? yes, this means that quality of all your pictures can be different (therefore name is variable compression). question: so, what for is 91% quality defined in driver? well, this is nothing more than simple tip for the algorithm, in this way it knows where to start process of seeking. question: ok, it knows where to start but where it ends? it's trying to predict jpeg file size with various combinations of quality % levels. predicted file size is then compared to jpeg file size rules (defined by modders in driver). if comparision will be positive then jpeg can be created, otherwise quality % level is increased (if predicted result is below defined file size rules) or decreased (if predicted result is above defined file size rules) for next file size prediction. question: does this means that defined file size rules in driver are major parameters? yes, they are, quality % level will be adequate to max file size we want to have. you can set in driver quality 100% but in fact this level of quality is unreachable in 900kb file (you can check this with EXIF readers). question: no matter of what can I set quality 100%? yes you can but for what? this is only initial stress for compression algorithm and it will blow out into dust your dreams about 100% quality
my observations:
- average file size is ~820kb (many folders, more than 100 files in each folder)
- average file size of shots with flash or low detailed scenery is ~680kb
so, I can push the rules a bit higher in next version. top quality range 90 - 95% in cameraphone? madness! with SE you guys are really in jpeg's compression heaven even if you don't believe
[ This Message was edited by: Goldmen on 2008-08-13 11:42 ]
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Posted: 2008-08-13 12:32:09
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well, if you want to compare you must assure very similar conditions especially when your scene have wide range of luminosity (very bright window and dark room in your case). look at photos - the are taken from different positions and angles. why is this so much important? because this kind of divergences have major influence on autofocus and on autoexposure when luminosity range is very wide (like on your scene). different autoexposure levels will give you different results. small example...
two pics merged, as you can see they are really different
sorry but your test isn't authoritative
EDIT: why picture from Vudu is the best? because very bright spot from window is smallest on this picture. less overexposure = more details in dark parts of the picture
_________________
K800 R1KG001
raider.4shared.com
flickr.com/photos/raiderek
[ This Message was edited by: Raiderski on 2008-08-13 12:12 ]
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Posted: 2008-08-13 13:01:35
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Raiderski please talk to me Polish my English is bad ;/
Mniejsze "przepalenie" zdjecia tak tylko ja nie wiem jak w twoim sterowniku ustawic zeby nie bylo tego przepalenia. Które parametry jak ustawić ??
Vudu dla mnie wygrał ponieważ na auto mode dobiera najlepiej parametry (tak mi się wydaje)
[ This Message was edited by: czaki91 on 2008-08-13 12:56 ]
[ This Message was edited by: czaki91 on 2008-08-13 12:58 ]
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Posted: 2008-08-13 13:53:15
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I want driver, who can help me to make the photos faster.
Look at this photo from my phone:
http://i214.photobucket.com/a[....]33/tonito88/Snimki/0353-15.jpg
The bus looks deformed
Which driver is advisable? I have K800i with Kopritis 3.7.
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Posted: 2008-08-16 22:11:06
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According to me,camdriver will not fix this problem...
It looks like lens distortion,so it`s not software problem,but it`s hardware - small camera lens...
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Posted: 2008-08-17 22:33:53
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K800 sensor cannot build picture of moving objects without distortions. in some situations only fast exposure time can help (like sport scene)
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Posted: 2008-08-17 22:45:55
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Pictures with
v4.53 modded camdriver:
1 2 3 4 5 6 7
Other driver variant:
v4.53C (vivid & smaller ~20KB)
[ This Message was edited by: vudu70 on 2008-08-24 10:29 ]
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Posted: 2008-08-18 20:18:38
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Vudu can you write changelog in English ??
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Posted: 2008-08-19 11:10:56
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