Overexposed Textures from Normally Exposed Photos?

[LostArchaeologist]

Hi everyone,

Totally new to all this and still very much learning. I have run quite a few models now (mostly archaeological excavations and artifacts) with no problem at all.

This last year I took 80 photos of a foundation after we were done excavating. This was going to be main model for the project (and my dissertation!).

Align and mesh/model building went off without a hitch and all look pretty good. All the photos as normally exposed. However, when I go to generate the textures they are horribly overexposed and almost white in lots of parts. NONE of the photos are even close to being this overexposed.

This has never happened before and I have had much success modeling this foundation before.

Anyone know what I might be doing wrong? Is there some setting I am missing that is making the textures flip out?

I would love to share images, but I cannot as per the agreement with project stakeholders! Sorry about that but any help would be much much appreciated! Thanks!

[Wishgranter]

hard tosay. are the images in some RAW format or JPG - tif ? if RAW convert them to JPG-tif and process. if that are JPG-TIF see if they are not in some weird format - 16bit etc.  if can send just small part  (cropped ) of the texture - say part with good part and overexposed to muzeumhb@gmail.com
can sign NDA if need further assistance.... 

[Alexey Pasumansky]

Hello LostArchaeologist,

Probably you've used HDR setting for texture generation? Please check it in the Chunk Info, if so then just rebuild the texture in Standard mode (you may even use Keep UV setting to save the time).

[LostArchaeologist]

Thanks for the tips!

As far as I can tell the images are all jpg and 32bit. Ill double check this right now. I can send a little snippet of the texture too, but I am at work and need to do that at school. Ill have it up tonight.

I DID have HDR on and just before leaving for work I tried setting it without and running to see what happens. Ill update as soon as I can!

Thanks for the help and if other suggestions are out there would love to hear. More soon!

[LostArchaeologist]

Hi there!

That worked, thanks! I ended up leaving the uv on, and taking it off of max intensity. It looks ok in min intensity (some strange seams show up, but not overexposed), but it looks great either in mosaic or average blending mode. FIll holes is on as and set to standard not HDR.

Seems that the photos are only 8bit color depth...not sure why. Thanks again for the help!