| Re: How to display two images using tvscl [message #65023] |
Mon, 09 February 2009 21:19  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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frankosuna writes:
> For some reason the color scheme is completely different.
> The support image color is changed as well as the color
> of the edge detected image(supposed to be white).
Well, it looks to me like those images are 24-bit JPEGs.
That is going to make things very difficult. Did the data
*come* that way, or did you make those images JPEGs for some
reason?
It is *much* harder to do something sensible with color
pixels than it is to work with data pixels. Then, the two
images I downloaded from your URLs were different sizes.
Sigh...
Is this *really* what we have to work with?
Give me some good news and maybe we can sort this out
for you. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: How to display two images using tvscl [message #65028 is a reply to message #65023] |
Mon, 09 February 2009 17:18  |
frankosuna
Messages: 31
Registered: February 2008
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Member |
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On Feb 9, 2:38 pm, David Fanning <n...@dfanning.com> wrote:
> frankosuna writes:
>> I want to display the first image and then superimpose the edge
>> detected pixels but I'm not sure how to go about
>> pulling out the white pixels and then displaying them on top of the
>> supporImage.
>
>> Any ideas?
>
> Loadct, 0, NCOLORS=128
> LoadCT, 2, NCOLORS=128, BOTTOM=128
> TV, Btyscl(image1, TOP=127) + $
> BytScl(image2, TOP=127) + 128B
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Coyote's Guide to IDL Programming (www.dfanning.com)
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
For some reason the color scheme is completely different.
The support image color is changed as well as the color
of the edge detected image(supposed to be white).
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| Re: How to display two images using tvscl [message #65030 is a reply to message #65028] |
Mon, 09 February 2009 15:16 |
frankosuna
Messages: 31
Registered: February 2008
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Member |
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I'll give this a try. Thanks again!!
On Feb 9, 2:38 pm, David Fanning <n...@dfanning.com> wrote:
> frankosuna writes:
>> I want to display the first image and then superimpose the edge
>> detected pixels but I'm not sure how to go about
>> pulling out the white pixels and then displaying them on top of the
>> supporImage.
>
>> Any ideas?
>
> Loadct, 0, NCOLORS=128
> LoadCT, 2, NCOLORS=128, BOTTOM=128
> TV, Btyscl(image1, TOP=127) + $
> BytScl(image2, TOP=127) + 128B
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Coyote's Guide to IDL Programming (www.dfanning.com)
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: How to display two images using tvscl [message #65038 is a reply to message #65037] |
Mon, 09 February 2009 13:38 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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frankosuna writes:
> I want to display the first image and then superimpose the edge
> detected pixels but I'm not sure how to go about
> pulling out the white pixels and then displaying them on top of the
> supporImage.
>
> Any ideas?
Loadct, 0, NCOLORS=128
LoadCT, 2, NCOLORS=128, BOTTOM=128
TV, Btyscl(image1, TOP=127) + $
BytScl(image2, TOP=127) + 128B
Cheers,
David
--
David Fanning, Ph.D.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: How to display two images using tvscl [message #65163 is a reply to message #65023] |
Wed, 11 February 2009 17:52 |
frankosuna
Messages: 31
Registered: February 2008
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Member |
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On Feb 9, 10:19 pm, David Fanning <n...@dfanning.com> wrote:
> frankosuna writes:
>> For some reason the color scheme is completely different.
>> The support image color is changed as well as the color
>> of the edge detected image(supposed to be white).
>
> Well, it looks to me like those images are 24-bit JPEGs.
> That is going to make things very difficult. Did the data
> *come* that way, or did you make those images JPEGs for some
> reason?
>
> It is *much* harder to do something sensible with color
> pixels than it is to work with data pixels. Then, the two
> images I downloaded from your URLs were different sizes.
> Sigh...
>
> Is this *really* what we have to work with?
>
> Give me some good news and maybe we can sort this out
> for you. :-)
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
I have two .dat files which I suppose is a binary image files. I
create them the following way:
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
tvscl, congrid(realImage, 1024, 1024)
image = TVRead(Filename='realImage',/NODIALOG,/BMP)
image = READ_BMP('/home/users/fjosuna/CASVU_ISS/realImage.bmp')
OPENW, lun, 'realImage.dat', /GET_LUN
WRITEU, lun, image
FREE_LUN, lun
ERASE
The first one is the edge detected file and the second is the image
that edge
detection was performed on. They both should be 1024x1024 images.
I then want to display the real image first and on top the edge
detected image
which I do like this:
; Create a window and display the image.
WINDOW, 0, XSIZE = dims[0], YSIZE = dims[1], $
TITLE = 'Click on an Edge to navigate on.'
;TVSCL, congrid(realImage,dims[0],dims[1])
;Loadct, 0, NCOLORS=128
;LoadCT, 2, NCOLORS=128, BOTTOM=128
TVSCL, Bytscl(realImage, TOP=127) + $
Bytscl(img,TOP=127)
Both files realImage and img are the bmp files for the edge detected
image and
the real image.
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