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Re: Problem displaying images on 8 bit monitor [message #50555 is a reply to message #50554]

Wed, 11 October 2006 02:28

mark
Messages: 28
Registered: September 1992

Junior Member

The DOME card/monitor I have uses 8 bits per pixel grayscale - it's set
to a 256 level static grayscale and there is no option for this card to
increase the bit-depth.

The other display programs I have used (that work fine with this card)
are ImageJ and Osiris, i.e. normal shareware display programs
downloaded from the web that are not at all specifically designed for
this card. I'm fairly sure that even Paintshop word work, though I
haven't installed and tested that.

On this monitor, IDL is displaying the 8 bit images 5 bit, i.e. there
are only 32 discrete gray level values being displayed instead of 256.
That is why the image does not look smooth. I can't understand why this
is the case, but I will take your advice and forward a message to Tech
Support and see what they say.

Mark Hadfield skrev:

> Karl Schultz wrote:
>
>> The problem is that this is a DOME card/monitor that uses 12 bits per
>> pixel greyscale.
>>
>> His "other" display programs probably are written specifically for this
>> card, and that's why the image looks smooth.
>>
>> IDL isn't leveraging the 12-bit per pixel feature of this device and needs
>> to be modified to do so.
>>
>> Mark should forward a request to ITTVIS Tech support, asking that IDL
>> support this device in 12-bit.
>
> Tell them Karl sent you.

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[Message index]

		Re: Problem displaying images on 8 bit monitor By: mark on Wed, 11 October 2006 11:46
		Re: Problem displaying images on 8 bit monitor By: Karl Schultz on Wed, 11 October 2006 08:21
		Re: Problem displaying images on 8 bit monitor By: mark on Wed, 11 October 2006 02:28
		Re: Problem displaying images on 8 bit monitor By: badjelly.witch on Tue, 10 October 2006 13:43
		Re: Problem displaying images on 8 bit monitor By: Karl Schultz on Tue, 10 October 2006 08:12
		Re: Problem displaying images on 8 bit monitor By: mark on Tue, 10 October 2006 05:55
		Re: Problem displaying images on 8 bit monitor By: Jo Klein on Tue, 10 October 2006 03:58
		Re: Problem displaying images on 8 bit monitor By: David Fanning on Tue, 10 October 2006 03:54
		Re: Problem displaying images on 8 bit monitor By: mark on Tue, 10 October 2006 03:35
		Re: Problem displaying images on 8 bit monitor By: mark on Tue, 10 October 2006 02:10
		Re: Problem displaying images on 8 bit monitor By: David Fanning on Mon, 09 October 2006 15:22
		Re: Problem displaying images on 8 bit monitor By: mark on Mon, 09 October 2006 15:08
		Re: Problem displaying images on 8 bit monitor By: David Fanning on Mon, 09 October 2006 15:01
		Re: Problem displaying images on 8 bit monitor By: mark on Mon, 09 October 2006 14:55
		Re: Problem displaying images on 8 bit monitor By: Karl Schultz on Wed, 11 October 2006 13:28

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