Hello
The switch for alpha channel did not work at all, until I swapped the image to false colour and then back again. Given how many tables I had in my seamless table, it was just not viable to do it for every single file. PB support believed I should just have need to turn that switch on the once, but obviously that didn't work in this case, so it's still with them.
In the mean time I've had a terrible time trying to get the aerial photos to even open to test the latest potential solution, and have rolled back from v17 to v16. The images are currently displaying fine but I've had to drag some of them onto my desktop to get them to load in a reasonable amount of time (even using v16). Leaving them on the network drive where they have lived for a number of years while we ran much older earlier versions of MIPro was just timing out and crashing the newer versions.
I've had a very frustrating week when it comes to images.
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Rebecca Marks
GIS & Environment Officer
Greater Hume Council
NSW Australia
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Original Message:
Sent: 07-18-2019 17:05
From: Sam Roberts
Subject: What has happened to my aerial image and how do I fix it?
Hi Rebecca,
Are your images in ECW or JPEG2000 format?
An issue has just come to my attention for images in that format, which produces a result very similar to the screen-shot you posted. If these images have variable opacity values then, by default, the ECW/JP2 driver converts pixels that are more than 50% transparent to empty pixels. I think we can just turn this behaviour off now because users can use the "Display alpha channel" switch. I will update this for release 17.04.
However, you posted above that you fixed the problem, which tends to imply there was some kind of validity issue with the rendering XML stored in the GHX file. So maybe this transparency issue is not related to your problem.
Regards,
Sam.
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Sam Roberts
Engineer, MapInfo Pro Advanced (Raster)
Australia
Original Message:
Sent: 07-14-2019 19:57
From: Rebecca Marks
Subject: What has happened to my aerial image and how do I fix it?
In case anyone is wondering where this is up to...
I have followed the instructions to correct the image
It did nothing
I tested it again with a single image (as opposed to my seamless table)
It did nothing
I thought I'd fiddle with the other settings under Advanced Colour (not available for seamless tables) and changing the Display Mode from RGB to Pseudo Color and then back to RGB - FIXED IT!!
The corrected file stayed corrected when reopened, and inside the seamless table when all the other pieces stayed uncorrected.
The rest of the image files on this pc need to be adjusted one at a time the same way to get the fix to stick. It is time consuming and annoying but it works for now.
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Rebecca Marks
GIS & Environment Officer
Greater Hume Council
NSW Australia
Original Message:
Sent: 07-10-2019 00:07
From: Rebecca Marks
Subject: What has happened to my aerial image and how do I fix it?
Hello all
This opens totally fine in v16 and v12.5 but for some reason it opens really messed up in v17. Is there a setting somewhere that needs tweaking?
First image is v17 and second v12.5
Many thanks
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Rebecca Marks
GIS & Environment Officer
Greater Hume Council
NSW Australia
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