| Re: IDL Movie Viewer [message #29852] |
Thu, 21 March 2002 00:35  |
gerhard.holst
Messages: 3
Registered: March 2002
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Junior Member |
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"Mark Hadfield" <m.hadfield@niwa.co.nz> wrote in message news:<a7ba6b$3al$1@newsreader.mailgate.org>...
> "Phil" <plmcelwee@yahoo.com> wrote in message
> news:RO8m8.530$Bd4.3473@dfw-service2.ext.raytheon.com...
>
>
>> If you can find the image-loop viewer, I would appreciate your sending it
> to
>> me. My web searches haven't turned anything up, but maybe I can modify
> your
>> file to add some features.
>
> The image-loop viewer is already on my IDL page at...
>
> http://katipo.niwa.cri.nz/~hadfield/gust/software/idl/
>
> I just checked it was working and updated the page. The reason I didn't
> point you to the page immediately is that my software library is not a
> polished, modularised set of routines like others have on the WWW. Nor has
> it been widely tested. It's a conglomeration of interdependent routines and
> classes in various stages of development, mostly ones I use in my day-to-day
> work. I recognise that anyone else who tries to use it may well run into
> some difficulties. So I'm not too eager to recommend it to anyone else. But
> if you want to have a go, I'd love to hear how you get on and help if
> necessary.
>
> To use it you will *need* IDL version 5.5. (That's mainly because since
> installing 5.5 on my machine I have made extensive use of the new
> _STRICT_EXTRA keyword.) You should download and unpack the whole library
> into your IDL path, then run the command...
>
> IDL> mgh_motley
>
> to initialise it. Then try
>
> IDL> mgh_example_image_sequence, 0
> IDL> mgh_example_image_sequence, 1
>
> The first displays IDL's abnorm.dat dataset in my image-sequence object, the
> second in XINTERANIMATE.
>
> My image viewer does not (yet) support the operations you want. I does offer
> (IMHO) a very powerful interface for examining the animated sequence. (It
> inherits this from a superclass called MGH_Animator.)
>
> To adjust contrast & brightness you could manipulate the palette via the
> "Edit Palette" menu item. There was also a discussion on this group a few
> months back about interactive adjustment of these image attributes via the
> mouse--you might want to look at that.
>
> It would not be too difficult to examine values associated with specific
> pixels, either by extending the mouse-picking code or by adding a menu item
> to show image data in a XVAREDIT widget. I could do either or both of these
> quite quickly and would be willing to do it because it would be useful for
> me too.
>
> Anyway, have a look & see what you think.
Hi Phil and Mark,
there is also David Fannings XMovie.pro, which he calls a simplified
version of XInteranimate. I have used that and changed it a little bit
and it is not too difficult to add functionality.
What I found useful also is the Software VideoMach and Moyager from
www.grommada.com. VideoMach makes movies from sequences any format
you like and Moyager is a viewer, but not with the single pixel readout
capability and the contrast change feature you like. But maybe XMovie.pro
can be combined with the ContrastZoom.pro example of David Fanning.
best regards, Gerhard
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| Re: IDL Movie Viewer [message #29854 is a reply to message #29852] |
Wed, 20 March 2002 16:40  |
Mark Hadfield
Messages: 783
Registered: May 1995
|
Senior Member |
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"Phil" <plmcelwee@yahoo.com> wrote in message
news:RO8m8.530$Bd4.3473@dfw-service2.ext.raytheon.com...
> If you can find the image-loop viewer, I would appreciate your sending it
to
> me. My web searches haven't turned anything up, but maybe I can modify
your
> file to add some features.
The image-loop viewer is already on my IDL page at...
http://katipo.niwa.cri.nz/~hadfield/gust/software/idl/
I just checked it was working and updated the page. The reason I didn't
point you to the page immediately is that my software library is not a
polished, modularised set of routines like others have on the WWW. Nor has
it been widely tested. It's a conglomeration of interdependent routines and
classes in various stages of development, mostly ones I use in my day-to-day
work. I recognise that anyone else who tries to use it may well run into
some difficulties. So I'm not too eager to recommend it to anyone else. But
if you want to have a go, I'd love to hear how you get on and help if
necessary.
To use it you will *need* IDL version 5.5. (That's mainly because since
installing 5.5 on my machine I have made extensive use of the new
_STRICT_EXTRA keyword.) You should download and unpack the whole library
into your IDL path, then run the command...
IDL> mgh_motley
to initialise it. Then try
IDL> mgh_example_image_sequence, 0
IDL> mgh_example_image_sequence, 1
The first displays IDL's abnorm.dat dataset in my image-sequence object, the
second in XINTERANIMATE.
My image viewer does not (yet) support the operations you want. I does offer
(IMHO) a very powerful interface for examining the animated sequence. (It
inherits this from a superclass called MGH_Animator.)
To adjust contrast & brightness you could manipulate the palette via the
"Edit Palette" menu item. There was also a discussion on this group a few
months back about interactive adjustment of these image attributes via the
mouse--you might want to look at that.
It would not be too difficult to examine values associated with specific
pixels, either by extending the mouse-picking code or by adding a menu item
to show image data in a XVAREDIT widget. I could do either or both of these
quite quickly and would be willing to do it because it would be useful for
me too.
Anyway, have a look & see what you think.
--
Mark Hadfield
m.hadfield@niwa.co.nz Ka puwaha et tai nei
http://katipo.niwa.co.nz/~hadfield Hoea tatou
National Institute for Water and Atmospheric Research (NIWA)
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| Re: IDL Movie Viewer [message #29855 is a reply to message #29854] |
Wed, 20 March 2002 15:20 |
Phil[1]
Messages: 3
Registered: March 2002
|
Junior Member |
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|
Thanks for the quick reply. I tried XINTERANIMATE, which works simply to
view the file. Unfortunately it doesn't allowed the added capability I'm
looking for. Also I've converted the file to MPEG format, and can view it
in MPEG players, but again don't have the added features.
If you can find the image-loop viewer, I would appreciate your sending it to
me. My web searches haven't turned anything up, but maybe I can modify your
file to add some features.
"Mark Hadfield" <m.hadfield@niwa.co.nz> wrote in message
news:a7b2eh$v2i$3@newsreader.mailgate.org...
> "Phil" <plmcelwee@yahoo.com> wrote in message
> news:P67m8.527$Bd4.3448@dfw-service2.ext.raytheon.com...
>
>> I have video files (in NetCDF format) that contain 256x256x1024
>> frames of video. Is there an easy way to view these files in IDL?
>> I'm new to IDL!
>
> Try XINTERANIMATE first. There's an example in the documentation. (At
> an IDLDE prompt, type ?xinteranimate and go from there.)
>
>> Ideally I'd like to stop the video at any point and look at
>> individual pixel values. Also I would need to be able to adjust the
>> gain and offset of the video for viewing purposes. Anyone know of
>> an easy way to do this, or know where I can find a good third party
>> utility?
>
> XINTERANIMATE won't do this OOTB. It might not be too hard to hack it
> so it will. XINTERANIMATE (which is based on the CW_ANIMATE compound
> widget function) keeps its images in a series of off-screen
> pixmaps. If you can get a handle to these (not using the term handle
> in its technical sense here) you can manipulate them any way you want
> via command-line operations. But adding this functionality to the user
> interface would not be non-trivial, and not a good thing to do IMHO.
>
> I have an image-loop viewer that could be modified to do what you
> want. It's object-based and so relatively easily extensible. If you
> want I can dig it up.
>
> There may be other solutions around. Check the usual WWW sites,
> starting with David Fanning's:
>
> http://www.dfanning.com/
>
> --
> Mark Hadfield
> m.hadfield@niwa.co.nz Ka puwaha et tai nei
> http://katipo.niwa.co.nz/~hadfield Hoea tatou
> National Institute for Water and Atmospheric Research (NIWA)
>
>
>
>
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| Re: IDL Movie Viewer [message #29883 is a reply to message #29852] |
Mon, 25 March 2002 09:29 |
Phil[1]
Messages: 3
Registered: March 2002
|
Junior Member |
|
|
Thanks for the responses. Unfortunately we are using IDL 5.1, and there are
no plans to upgrade. I'll try the other suggestions, and try to get back to
you on the results. May not get to it until next week though due to other
work priorities.
"Gerhard Holst" <gerhard.holst@pco.de> wrote in message
news:9fe17a3c.0203210035.4d6956b7@posting.google.com...
> "Mark Hadfield" <m.hadfield@niwa.co.nz> wrote in message
news:<a7ba6b$3al$1@newsreader.mailgate.org>...
>> "Phil" <plmcelwee@yahoo.com> wrote in message
>> news:RO8m8.530$Bd4.3473@dfw-service2.ext.raytheon.com...
>>
>>
>>> If you can find the image-loop viewer, I would appreciate your sending
it
>> to
>>> me. My web searches haven't turned anything up, but maybe I can
modify
>> your
>>> file to add some features.
>>
>> The image-loop viewer is already on my IDL page at...
>>
>> http://katipo.niwa.cri.nz/~hadfield/gust/software/idl/
>>
>> I just checked it was working and updated the page. The reason I didn't
>> point you to the page immediately is that my software library is not a
>> polished, modularised set of routines like others have on the WWW. Nor
has
>> it been widely tested. It's a conglomeration of interdependent routines
and
>> classes in various stages of development, mostly ones I use in my
day-to-day
>> work. I recognise that anyone else who tries to use it may well run into
>> some difficulties. So I'm not too eager to recommend it to anyone else.
But
>> if you want to have a go, I'd love to hear how you get on and help if
>> necessary.
>>
>> To use it you will *need* IDL version 5.5. (That's mainly because since
>> installing 5.5 on my machine I have made extensive use of the new
>> _STRICT_EXTRA keyword.) You should download and unpack the whole library
>> into your IDL path, then run the command...
>>
>> IDL> mgh_motley
>>
>> to initialise it. Then try
>>
>> IDL> mgh_example_image_sequence, 0
>> IDL> mgh_example_image_sequence, 1
>>
>> The first displays IDL's abnorm.dat dataset in my image-sequence object,
the
>> second in XINTERANIMATE.
>>
>> My image viewer does not (yet) support the operations you want. I does
offer
>> (IMHO) a very powerful interface for examining the animated sequence.
(It
>> inherits this from a superclass called MGH_Animator.)
>>
>> To adjust contrast & brightness you could manipulate the palette via the
>> "Edit Palette" menu item. There was also a discussion on this group a
few
>> months back about interactive adjustment of these image attributes via
the
>> mouse--you might want to look at that.
>>
>> It would not be too difficult to examine values associated with specific
>> pixels, either by extending the mouse-picking code or by adding a menu
item
>> to show image data in a XVAREDIT widget. I could do either or both of
these
>> quite quickly and would be willing to do it because it would be useful
for
>> me too.
>>
>> Anyway, have a look & see what you think.
>
> Hi Phil and Mark,
>
> there is also David Fannings XMovie.pro, which he calls a simplified
> version of XInteranimate. I have used that and changed it a little bit
> and it is not too difficult to add functionality.
> What I found useful also is the Software VideoMach and Moyager from
> www.grommada.com. VideoMach makes movies from sequences any format
> you like and Moyager is a viewer, but not with the single pixel readout
> capability and the contrast change feature you like. But maybe XMovie.pro
> can be combined with the ContrastZoom.pro example of David Fanning.
>
> best regards, Gerhard
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