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#1
bebe onea

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Hi,
Can anyone tell me how can I match the colors of two orthophotograms? I have some othophotograms but they have slight different colors and I want to match the colors of some of them to the colors of the others. I tried that in Photoshop but the result was not ok. Is there a method or another software to do that?
Thanks.

#2
frax

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Is there really any other way to do it but visually? There are many settings that you can play with in photoshop - try adding adjustment layers for non-destructive edits.
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#3
natcase

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Hi,
Can anyone tell me how can I match the colors of two orthophotograms? I have some othophotograms but they have slight different colors and I want to match the colors of some of them to the colors of the others. I tried that in Photoshop but the result was not ok. Is there a method or another software to do that?
Thanks.


Are these adjacent photos from the same flight? If so, then gently tweaking them in Photoshop is probably your best bet.

If they are from different flights, you are probably out of luck. Even if they are from the same flight, you may have unsolvable problems from water glare, etc.

Use a soft edge (feather), and use hue and saturation to move them toward each other, working one image at a time in a layered Photoshop file. Note that there are likely variations within any given photograph because of sun angle, so you may need to make changes unevenly across any of the component photos.

Not an easy process. Usually my best result is a "natural-looking" transition among areas of the map, and an overall consistency of tone.

Nat Case
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#4
paul

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By far the best software for this is Orthovista.

http://www.inpho.de/...ndex_orthovista

It's a little pricey, but pays for itself in saved labor.

#5
vhramos

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A number of applications can do this, but none of them are cheap. I use ERDAS Imagine and the specific mosaic tools that allow you to "match" adjacent images. However I have always found that you will have to always have to do some manual adjustments. Hope this helps




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