[Elphel-support] starting an article...

[Andrey Filippov]

Hi Flavio,

Nice work! I would recommend you to play with coring settings in addition
to JPEG quality - it may provide some better efficiency in image size-
quality trade-offs. This is one of the articles about coring that has some
illustrations: http://downloads.hindawi.com/journals/ivp/2010/323180.pdfThis
feature is implemented in the camera FPGA code and it is possible to
control the amount separately fro the luma and chroma components. The
current implementation uses the value relative to the JPEG coefficients, so
the higher the JPEG quality the higher the coring values are needed to
achieve the same effect.

Additional note - you have an image of the transparent camera (that seems
to be made of the original Elphel camera body) in the article. With all my
love to open designs, I would never make a transparent camera as it
contradicts the nature of optics - the transparent eye will be blind. Of
course, you can make a smaller part (sensor+lens body) non-transparent
inside a large transparent body, but that would be like cheating - we make
something that looks transparent, but the most important parts inside - are
not.

Andrey


On Mon, Jun 4, 2012 at 8:40 AM, flavio soares <qazav3.0 at gmail.com> wrote:

> (sorry, I sent this e-mail but forgot to change the thread. here it goes
> again, with the proper subject title):
>
> Hello,
>>
>> I have started writing an article called "A somewhat comprehensible guide
>> to using Elphel as a Digital Cinema camera". It's here:
>> https://szaszak.wordpress.com/linux/elphel-as-a-digital-cinema-camera/.
>>
>> My intention is to do a sort of general reference guide for this specific
>> use, also talking about the general common elphel-use doubts I had or have
>> seen were sort of common in this list. It too is an effort to have a global
>> overview on the wiki's documentation, linking there whenever possible.
>>
>> Please, take a look at what is there (so far, there is only the section
>> "effective recording quality", where it also talks about the Compact Flash
>> cards issue) and tell me what you think. If you believe any part of this
>> document is worthy making to any existing official channel (elphel wiki or
>> development blog), please tell me and we can work this together. Any
>> errors, please point those to me and I'll do my best to correct them.
>>
>> cheers,
>>
>> flavio
>>
>>
>>
>
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>
>
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