| 06 May 2014 01:49 AM |
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Hi,
I have a problem on Envi (4.8). When I want to resize data or to save images to TIFF or JPEG.
When I want to resize data, and change the numbers (for example y factor or x factor) the numbers go all wrong (it adds lots of 0 numbers or negative numbers...) then it cannot do the 'resize' action.
The numbers go all wrong again when I try to save an RGB image (made with an hyperspectral image) in an image format (TIFF, JPEG, BMP, PNG...). When I enter the name of the file I want to save, the numbers go crazy and negative, so the software won't save anything...
Thank you for your help.
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Berangere Casson
New Member
Posts:61  
| 06 May 2014 03:04 AM |
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Could you eventually provide an example of the numbers that are going wrong ?
I am not sure to understand if these numbers correspond to the output image size or to something else.
Thanks
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Deleted User
New Member
Posts:
| 06 May 2014 04:34 AM |
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Yes, the numbers correspond to the output image size. It gives something normal and when I click on JPEG or BMP or anywhere it changes and gives something like: -2147483648 x -2147483648 x 3
I wanted to attach a file but don't know how to do it.
Then an error occurs: 'array dimension must be greater than 0'
On the resizing tool it gives me the same problem. when I touch the x factor or y factor, even when I change the name of the file it doesn't work (gives weird numbers for the dimension of the file).
I don't know if the two problems are linked but they are similar to me.
Thanks for your help
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MariM
Veteran Member
Posts:2396 
| 06 May 2014 08:31 AM |
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Can you post the contents of the header file (.hdr) that exhibits this behavior in the Resize or Save Image As tool?
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Deleted User
New Member
Posts:
| 06 May 2014 09:08 AM |
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Hi,
In the Resize Data Parameters tool, here is what I have: (cannot upload any copy of the screen... i don't know how to do it)
Output file dimensions:
Samples: 2750 xfac: 1.000000
Lines: 6168 yfac:1.000000
Output size: 10,855,680,000 bytes
Resampling: Nearest Neighbor
Output result to: File
Enter Output Filename: blank
By the time I enter a filename (just the filename) for example, I have:
Output file dimensions:
Samples: 1 xfac: 1000000.000
Lines: 1 yfac:1000000.000
Output size: 0 bytes
Resampling: Nearest Neighbor
Output result to: File
Enter Output Filename: name
If I try to change xfac and yfac (for example I change yfac to 2 and press enter) that's what I have:
Output file dimensions:
Samples: 1 xfac: 364.000000
Lines: 1 yfac:0.000162 (I tried to put 2 in this box)
Output size: 640 bytes
Resampling: Nearest Neighbor
Output result to: File
Enter Output Filename: name
So if I enter the number 2 for yfac, it won't resize it as I want.
Sorry if it is not clear, i can try to explain it again...
Thanks
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Berangere Casson
New Member
Posts:61
| 16 May 2014 08:48 AM |
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This behavior is very odd and I don't think I've ever seen it. I would recommend to try to update to a more recent version of ENVI to check if you can reproduce this behavior. If you need help for the upgrade you can contact Tech Support: support@exelisvis.com
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