>
> Here's how these images look like when opened in Photoshop:
>
> http://www.ndl.kiev.ua/downloads/elphel/image_jpg.png
> http://www.ndl.kiev.ua/downloads/elphel/image_raw8.png
>
> So, not only images differ visually - even levels do look differently.
> However, when I tried to use ImageMagick as
Andrey,
On Sat, 30 Jan 2010 14:10:40 -0700, Andrey Filippov
wrote:
>> 2. However, resulting RAW and JPEG images have considerably different
>> brightness/contrast, suggesting that some parts of processing are done
>> differently to RAW than JPEG?
[skipped]
I'm terribly sorry - it appears I've
>
> ...so my interest in RAW is mainly to understand current JPEG
> behavior/difference with RAW and being able to compare things to "original"
> image to make sure everything goes as it should.
>
Alexander,
Yes, it is exactly the purpose of the "raw" images in the camera
>
> 2. However, resul
Hello Andrey,
On Fri, 29 Jan 2010 17:57:37 -0700, Andrey Filippov
wrote:
>> Am I right assuming that while no information loss occurs due to
>> quantization, there still some (insignificant?) loss due to DCT/other
>> parts
>> of compression process?
>
> There is enough precision in DCT, no colo
>
> Am I right assuming that while no information loss occurs due to
> quantization, there still some (insignificant?) loss due to DCT/other parts
> of compression process?
>
Alexander,
There is enough precision in DCT, no color conversion in mono/jp4 modes, so
no other sources of errors. The re
Hello Andrey,
On Wed, 27 Jan 2010 13:02:30 -0700, Andrey Filippov
wrote:
>> Visually the noise pattern looks completely static - ...
>
> Alexander, what you see is really sensor "fixed-pattern noise" - the
> different dark signal from the sensor.
Yes, that looked like warm/hot pixels indeed, b
>
> Visually the noise pattern looks completely static - ...
Alexander, what you see is really sensor "fixed-pattern noise" - the
different dark signal from the sensor. The pixels that seem white are really
what is called "warm pixels" - the ones that have significantly higher dark
current than t
Hello Oleg,
On Wed, 27 Jan 2010 12:55:11 -0600, "Elphel Support
List" wrote:
> Is the noise picture static or variable?
Visually the noise pattern looks completely static - though there are
slight variations between every image on the order of several levels (so
images do differ slightly, but no
Dear Alexander,
Is the noise picture static or variable?
Could you please resend your mail to "support-list@support.elphel.com"
Regards,
Oleg
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Dear Kaien,
First, can you please provide us with the following info:
go to http:///index.php?site=camerasetup/setup.php
then click on "Status Report" and send it to us.
If "FPGA Version" is 3534010 then get other version of x353.bit from here:
http://elphel.cvs.sourceforge.net/viewvc/elphel/elph
Hello
Elphel
in elphel camera, image noise appears as a white point.
I
can not find the problem. Do you know what the
problem is?
Can you give me some advice what I should do?
imag link : http://cfile27.uf.tistory.com/image/16645C1D4B567C652074EC
Thank you and best regards
Kaien.
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