| 16 bit greyscale / grayscale videos [message #69474] |
Wed, 20 January 2010 06:48  |
2d
Messages: 24
Registered: July 2007
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Junior Member |
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I'd like to generate 16-bit greyscale videos to retain the full
sensor
fidelity and be able to replay them on the standard (free) video
players. Is this possible in IDL 6.0?
I'm thinking with medical and infra red imaging, high quality imaging
sensors, and processing power 16-bit greyscal video should be doable
now without too much difficulty. Does anyone have any suggestions
about how to go about generating and displaying 16-bit video.
many thanks,
Neil
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| Re: 16 bit greyscale / grayscale videos [message #69691 is a reply to message #69474] |
Tue, 02 February 2010 07:27  |
Kenneth P. Bowman
Messages: 585
Registered: May 2000
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Senior Member |
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In article
<3082e4e2-d406-48a2-832c-849e9a679569@f17g2000prh.googlegroups.com>,
MC <moreflaps@gmail.com> wrote:
> On Jan 21, 9:25�pm, 2...@onetel.com wrote:
>> Yes, PNG and TIFF both support 16-bit greyscale storage. However, as i
>> understand with TIFF you can create a single file containing multiple
>> images, which is more convenient, for passing to animation software,
>> whilst PNG only stores one image per file, so that less convenient. Is
>> there any way to store multiple PNG images in a single PNG file?
>>
>> Question then remains is what animation software and movie media will
>> retain the 16-bit greyscale fidelity? Most of these do RGB of 8 bit
>> for each colour, so that wont retain the full 16-bit greyscale
>> fidelity.
>>
>
> Not only that, it is unlikely that one can tell the difference between
> 16bit and 8bit greyscale visually -even if Mach banding effects are
> present...
>
> Cheers
Does anyone actually have a display that provides more than 8 bits
per channel? You might have 16 bits per channel in your image, but
I am reasonably sure that standard video hardware provides only 8
bits per channel. Perhaps there are monitors and graphics cards
with greater depth for high-end applications?
Ken
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