Celestia Forums

I'm looking for some advice. I'm working on trying to create some planet textures, in particular gas giants, and don't know how I can eliminate the seam where the texture wraps around.

No matter how hard I try to keep the patterns lined up on each end, when it wraps around it's very obvious that there is a seam there.

I've been searching around the forum here but haven't had a lot of luck yet, so I thought I'd ask while I keep searching.

Anyone have any tips?

Thanks
Mike

One thing you might try is to cut-and-paste the surface textures so that what used to be the sides becomes the center of the image. What used to be the center becomes the new, perfectly aligned edges. Then you can do whatever's appropriate to make the new, misaligned, center look good.

mmarable wrote:I'm looking for some advice. I'm working on trying to create some planet textures, in particular gas giants, and don't know how I can eliminate the seam where the texture wraps around.

No matter how hard I try to keep the patterns lined up on each end, when it wraps around it's very obvious that there is a seam there.

1. Don?t use the scale canvas function in Photoshop without flattening the image first - if you do, the edges becomes slightly transparent, and the finished result gets a seam.

2. To eliminate seams on the map, duplicate it, and place the two parts exactly beside each other on the canvas. Use the Clone Brush to retouch the edges, then copy about 10 pixels into part 2 (from the right edge of Part1), and paste it in the left edge of Part 1. Then delete Part 2, and you should be Ok.

Another way, if the meridian isn?t important, is to just complete the map, and center the right edge on the canvas, then duplicate it and place the left edge of Part 2 beside it, then retouch the seam and flatten the image.

If you use Photoshop, use the Clone Stamp or the Smudge Tool to retouch; other paint programs ought to have something similar.

- rthorvald

If you're using Photoshop, the offset filter (Filter > Other > Offset) will get the seam into the middle of the image where you can work with it.

Mike,

there are special functions/filters for this work in most graphic applications, which wraps around an image as if it is projected onto a cylindric tube. So you can 'turn' your texture until the seam is somewhere in the middle of the pic and then work on it.

In photoshop you'll find it in 'filter->other->offset...' - check 'wrap around' and select 'horizontal [xxx] pixels right'. There is a similar function in gimp called with (in german) 'context menu->bild->transformationen->versatz...' or use shortcut 'shift-ctrl-O'

maxim