| Re: create image in background [message #61073] |
Thu, 03 July 2008 18:28 |
ben.bighair
Messages: 221
Registered: April 2007
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Senior Member |
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On Jul 3, 9:20 pm, frankosuna <frankos...@gmail.com> wrote:
> I fixed the problem.. I needed to load color table 0 so the new code
> looks like this in case anybody else has any problems on doing
> this. Thanks to everybody for the suggestions and help. Maybe I can
> finish my Thesis now!! Well appreciated!!
>
> LOADCT, 0
> mydevice = !D.NAME
>
> SET_PLOT, 'Z'
>
> ERASE
>
> DEVICE, SET_RESOLUTION=[1024,1024]
>
> filteredImage = SOBEL(img)
>
> filteredImage=ROTATE(filteredImage, 2)
> TVSCL, filteredImage
>
> oplot, filteredImage[*,*]
>
> image = TVRead(Filename='edgeDetect',/NODIALOG,/BMP)
>
> image = READ_BMP('/home/users/fjosuna/CASVU_ISS/edgeDetect.bmp')
> OPENW, lun, 'edgeDetect.dat', /GET_LUN
> WRITEU, lun, image
> FREE_LUN, lun
> ERASE
> SET_PLOT, mydevice
Hi,
I guess I don't understand what you are trying to do. But I am glad
it works for you. Just a note, here's an example that creates a
filtered image, writes it as a TIFF, reads it back in and then
displays it. Note that to create and save the image no device was
used. I think this is what you requested originally.
Cheers,
Ben
;read the image into an IDL variable
file = FILEPATH('mineral.png', $
SUBDIRECTORY = ['examples', 'data'])
img = READ_IMAGE(file)
;transform the image
filteredImage = SOBEL(img)
filteredImage=ROTATE(filteredImage, 2)
;write the image to a file - SOBEL returns a signed integer
WRITE_TIFF,"edgeDetect.tif", filteredImage,/SHORT
;to read in the image, use READ_IMAGE - then display with scaling
restoredImage = READ_TIFF("edgeDetect.tif")
TVSCL, restoredImage
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| Re: create image in background [message #61074 is a reply to message #61073] |
Thu, 03 July 2008 18:20  |
frankosuna
Messages: 31
Registered: February 2008
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Member |
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I fixed the problem.. I needed to load color table 0 so the new code
looks like this in case anybody else has any problems on doing
this. Thanks to everybody for the suggestions and help. Maybe I can
finish my Thesis now!! Well appreciated!!
LOADCT, 0
mydevice = !D.NAME
SET_PLOT, 'Z'
ERASE
DEVICE, SET_RESOLUTION=[1024,1024]
filteredImage = SOBEL(img)
filteredImage=ROTATE(filteredImage, 2)
TVSCL, filteredImage
oplot, filteredImage[*,*]
image = TVRead(Filename='edgeDetect',/NODIALOG,/BMP)
image = READ_BMP('/home/users/fjosuna/CASVU_ISS/edgeDetect.bmp')
OPENW, lun, 'edgeDetect.dat', /GET_LUN
WRITEU, lun, image
FREE_LUN, lun
ERASE
SET_PLOT, mydevice
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| Re: create image in background [message #61075 is a reply to message #61074] |
Thu, 03 July 2008 16:26 |
frankosuna
Messages: 31
Registered: February 2008
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Member |
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I have the following code and I am generating an image. However, for
some reason the image is in colors and is not black and white. It
doesn't look like it has been edge detected.
mydevice = !D.NAME
SET_PLOT, 'Z'
ERASE
DEVICE, SET_RESOLUTION=[1024,1024]
filteredImage = SOBEL(img)
filteredImage=ROTATE(filteredImage, 2)
TVSCL, filteredImage
oplot, filteredImage[*,*]
image = TVRead(Filename='edgeDetect',/NODIALOG,/BMP)
image = READ_BMP('/home/users/fjosuna/CASVU_ISS/edgeDetect.bmp')
OPENW, lun, 'edgeDetect.dat', /GET_LUN
WRITEU, lun, image
FREE_LUN, lun
ERASE
SET_PLOT, mydevice
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| Re: create image in background [message #61084 is a reply to message #61075] |
Thu, 03 July 2008 06:20 |
ben.bighair
Messages: 221
Registered: April 2007
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Senior Member |
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On Jul 3, 8:57 am, Bruce Bowler <bbow...@bigelow.org> wrote:
> On Thu, 03 Jul 2008 05:28:27 -0700, ben.bighair wrote:
>> Any array representing an image can be written with displaying it. Use
>
> insert "out" after with?
>
>> the WRITE_IMAGE for easy image writing.
>
> Bruce :-)
Yes indeed! And, if you see any marbles rolling down the hall past
your door - please catch 'em as they are surely mine!
Cheers,
Ben
P.S. I have been making many more of these kind of missing-word-
mishaps recently. It will be OK just as long as my wife continues to
find them endearing.
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| Re: create image in background [message #61086 is a reply to message #61084] |
Thu, 03 July 2008 05:57 |
Bruce Bowler
Messages: 128
Registered: September 1998
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Senior Member |
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On Thu, 03 Jul 2008 05:28:27 -0700, ben.bighair wrote:
> Any array representing an image can be written with displaying it. Use
insert "out" after with?
> the WRITE_IMAGE for easy image writing.
Bruce :-)
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| Re: create image in background [message #61087 is a reply to message #61086] |
Thu, 03 July 2008 05:28 |
ben.bighair
Messages: 221
Registered: April 2007
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Senior Member |
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On Jul 2, 7:27 pm, frankosuna <frankos...@gmail.com> wrote:
> Hello,
>
> I am doing some edge detection work and I wanted to be able to do this
> without having to display or open any windows. I want to be able to
> write the edge detected image in the background. Any suggestions will
> be greatly appreciated.
Hi,
Any array representing an image can be written with displaying it.
Use the WRITE_IMAGE for easy image writing.
Cheers,
Ben
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