Dark Bands Along Flight Lines in Orthomosaic

[Captbyrne]

Greetings,

I just finished a model build of an island that was comprised of 3100 4 band images.

When I created an orthomosaic, there were dark bands consistent with the flight lines flown. When seemliness were selected, it appears that the seemliness were consistent with the flight lines and dark bands.

I had selected "Refine Seamlines" when I generated the orthomosaic.

The sun was perpendicular to the flight lines so I understand how the edge closer to the sun will be a bit brighter than the edge opposite the sun, but I was not expecting this much banding.

Is there a way to reduce this banding in Agisoft?

I have attached a sample of this orthomosaic.

David Byrne

[jrp]

I'm certainly no expert on this type of work, but have you checked for and/or corrected for vigneting? (where the edges of the photos are darker than the center due to optics).

If you are usign a raw workflow, this should be simple enough to corect for in the raw processing software.

JRP

[olihar]

This looks like heavy vignetting of the lens, can you please post one single image and what equipment was used.

I would suggest doing vignette correction.

[Captbyrne]

Olihar, here is a sample image from the project. I do not see any vignetting in this image at all, and I have done many past projects with this camera without an dark bands in the imagery.