So, I downloaded 70+ images from the nationalmap.gov website. Now, I don't want to add each one of these individually so I select the multiple files when I add the images and they look odd, almost chess board like.
If I add them one at a time, they don't have the checkered appearnce. Any idea on how to add them all at the same time and have them display correctly?
Solved! Go to Solution.
I have had this happen from time to time. Seems to be a glitch. The way that I fixed it was to go into the Options, Select 3D Generation, and change the Generator Threads count. I changed mine to 10 and had the issues with the images. Then changed it to 4, restarted the program and the images were fine.
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Do your images have an alpha channel? Are your image tiles seamless or do they overlap a bit?
If you can provide a 3x3 tiles sample dataset I can have a deeper look into this.
The images are just GeoTIF files that I downloaded from nationalmap.gov. I'll see if I can get a tile group together for you. Not sure how big they will be but I'll do my best.
I tried editing the Generator Threads as suggested by Todd with no success.
So, I got the nine images showing the issue and here is what they look like in the model:
And this is how they look when I bring them into MAP 3D
I have the files in the zip file but it's almost 1 gig. I'll contact you via e-mail about getting the files to you.
Reporting back to the forum:
The provided images have 4 color channels: red, green, blue, and a 4th one, which looks either like a near infrared or like a gray-scale version of the RGB channels.
In the default settings, AIM assumes to use RGB + alpha mask for a 4 channel image, which is not appropriate in this case, since the 4th channel is definitely not an alpha channel; so you have several options here to setup the import correctly:
- use the RGB channels only: switch to "RGB" for Raster->Band Mapping->Type
- use the 4th channel as grayscale: switch to "Gray" for Raster->Band Mapping->Type and select the 4th band for the "gray" channel below
- use the 4th channel as near infrared: switch to "RGB" for Raster->Band Mapping->Type and select the 4th band for the "red" channel below