Help with orthomosaic of metal roof

Hi, 

I’m trying to produce an orthomosaic for a large metal roof and it’s failed miserably (see attached). The whole roof is very similar across the whole area, so pretty challenging for the algorithms I guess. The images were also taken on quite a sunny day. 

Is there anything I can do in photoshop to make the photos easier to process, such as increasing/decreasing the contrast? Any advice would be really appreciated. 

Thanks

Mark


Lots of front lap and side lap!

Lots of control!

Collect at 1/3 to 2/3rd under exposure.