[Sidefx-houdini-list] display card requirements

Edward Lam edward at sidefx.com
Tue Mar 10 09:33:40 EDT 2015


I don't know if jpeg is a good idea since it's a lossy image format. 
However, I guess a JPEG Quality of 100 isn't too bad.

-Edward

On 10/03/2015 9:22 AM, herman lee wrote:
> Dear Mark,
>
> The Mplay play properly on tiff image without the white wash. Now I use the
> rop to render the image in jpeg format, since only the jpeg do not appear to
> have white wash when I open it with photoshop. Then in photoshop I save the
> image in tiff format for future printing.
>
> I assume using the rop to render in jpeg then use photoshop to save in tiff
> will not lose the quality right?
>
> Many thanks!
>
> Cheers
> herman
>
> -----Original Message-----
> From: sidefx-houdini-list-bounces at sidefx.com
> [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Mark Elendt
> Sent: Tuesday, 10 March, 2015 12:39 AM
> To: sidefx-houdini-list at sidefx.com
> Subject: Re: [Sidefx-houdini-list] display card requirements
>
> Targa stores the image resolution in a 16 bit integer, so the maximum
> resolution is 16384 by 16384.
>
> TIFF stores its resolution in a 32 bit integer, so the max resolution for
> TIFF is 4294967296 by 4294967296 (same as JPEG).
>
> PNG and OpenEXR are 2147483647 by 2147483647.
>
> If you save the image from a ROP and open it with mplay, does it display
> properly?  Does it display properly if you load at 50% resolution (i.e.
> mplay scales the image as it loads, before it displays it).
>
> The white-wash might be an artifact of the image display, rather than an
> artifact in the image itself.
>
> On Tuesday Mar 10 at 00:28, herman lee wrote:
>> Thanks Edward, I'm saving in tiff format. May be I should try targa.
>>
>> Cheers herman
>>
>> -----Original Message-----
>> From: sidefx-houdini-list-bounces at sidefx.com
>> [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Edward
>> Lam
>> Sent: Tuesday, 10 March, 2015 12:23 AM
>> To: sidefx-houdini-list at sidefx.com
>> Subject: Re: [Sidefx-houdini-list] display card requirements
>>
>> The other thing that you might want to watch for are maximum
>> resolution/size limits on the underlying image format that you're
>> saving to. I think Photoshop should be able to handle file sizes that big.
>>
>> -Edward
>>
>> On 09/03/2015 12:06 PM, herman lee wrote:
>>> Thanks Edward, I did manage to save the image by using right
>>> clicking at the node, for some reason when I use the rop output, the
>>> image generated has a white wash on top.
>>> If I set the resolution to 25000x25000, somehow I manage to save the
>>> image, but photoshop not able to open it, most likely its too big of
>>> a
>> file.
>>>
>>> Cheers
>>> herman
>>>
>>> -----Original Message-----
>>> From: sidefx-houdini-list-bounces at sidefx.com
>>> [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Edward
>>> Lam
>>> Sent: Monday, 9 March, 2015 11:02 AM
>>> To: sidefx-houdini-list at sidefx.com
>>> Subject: Re: [Sidefx-houdini-list] display card requirements
>>>
>>> Are you able to cook and write out those files using a Composite ROP
>>> at that resolution? That would rule out whether it's display
>>> limitation or
>> not.
>>>
>>> Best Regards,
>>> -Edward
>>>
>>> On Sun, March 8, 2015 11:51, herman lee wrote:
>>>> Hi all,
>>>>
>>>> My work mainly involved with compositing and need to generate high
>>>> resolution images from cop. I set to maximum resolution at
>>>> preferences>compositing>cooking, say at 20000x20000, however, the
>>>> preferences>compositing>image at
>>>> composite view can only display up to around 16000 pixel. Is it
>>>> because of my display card capacity? Mine is NVIDIA Quadro K2000,
>>>> should I get a higher performance display card? Any recommendation?
>>>> I'm using Houdini 14, window 8.
>>>>
>>>> Thanks!
>>>>
>>>> Kind regards
>>>>
>>>> Herman
>>>>
>>>>
>>>>
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>>>>
>>>
>>>
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>>
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>
> --
> Mark Elendt
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