5th attempt, still can't get mosaic to not have blurred overlaps

[Ryan O'Connor]

Hi, have tried Hugin for about 13 hours now, and have ended up pretty frustrated. I'm trying to photo scan a mosaic (a large flat panel of artwork) by moving a tripod around equidistant from the panel. So far I haven't been able to produce a better result than I can manually stitch in digital painting software using warps on each layer. I'm using a 35mm prime lens on a crop sensor, which seems detected correctly as ~1.5 FOV multiplication.

I've attached a download with my .PTO and my source images, as well as the output tiff and the expected minimum result quality. This is the 5th attempt and represents roughly the best result I've been able to achieve so far with the least number of photos. If anyone is able to get it any better I will be in debt to you, and I thank you in advance for your contribution to the art world! Please let me know what I am doing wrong, as I've reshot the photographs with every attempt and improved upon the lighting, and even measured the distance from the camera to the subject, as well as tried more images and less images to help with alignment. One of the attempts even had me adding every single control point manually, but it was no better. The ones in the project look fine to me.

Download link:

https://drive.google.com/file/d/1LXgYMa5Bi4L_4ZuSCFQZYzIbNgyiy84D/view?usp=sharing

(I will delete after 10 days, since it's my own copyrighted artwork in high res, please don't use any of these images except for providing examples of hugin for learning purposes):

Many thanks,

Ryan O'Connor

[T. Modes]

Hi Ryan,

roci...@gmail.com schrieb am Samstag, 15. Februar 2025 um 11:15:59 UTC+1:

Please let me know what I am doing wrong,

The blurred results stems mainly from using the fused output option. This is not needed in this case. Instead use the normal pano output.

I did a new try.

Starting from a new project. Add images, run assistant.

Then in panorama editor switch to expert mode, set optimizer mode to user defined. On the optimizer tab add yaw of the anchor image and X/Y/Z of all images (except the first one).

Optimize again. (On the image tab optimize photometric again, just in case.) 

Then in the fast preview window adjust field of view and crop.

See attached pto file.

This should provide a better result.

Thomas

[Claudio Rocha]

On your project:

Treat the images as a different lens. Right click on each of the images select lens>New lens

IN the Optimizer window reset everything, then select only Roll, trX, TrY and TrZ. and optimize.

once you have optimized translation, and withot resetting the previous optimization, enable Yaw and Pitch. and optimize again.

then select plane yaw and plane pitch and optimize again

on lens parameters select b for barrel distortion and optimize

then select a for barrel distortion and optimize

additionally your lens shows pronounced barrel distortion, create a .ini file to correct that

https://hugin.sourceforge.io/tutorials/calibration/en.shtml