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General / Stumped. What is going on here?
« on: September 12, 2016, 01:32:03 AM »
I'm shooting a small, yellow jewelry case. It has a faux lizard texture on it. While the box is symmetrical, no one face is the same as another in terms of texture. In other words, a lizard skin is very textured. Please see screen shots attached. There is lots of variety.
As you will see, I have taped over the very reflective handle on top. In Photoscan, I have also masked out the shiny clip on the front.
Jeez - this thing WILL NOT ALIGN!
I've tried placing points. Photoscan cannot recognize them for all photos. For example, I placed a marker on the tip of the clasp on the front. Photoscan lined it up pretty well in the first few shots, giving me a small grey icon, and for the rest it put it in the wrong place.
When I "Estimate Image Quality" some shots that are tack-sharp are reported as below 0.5 even though it's my understanding that this number is a reflection of the most in-focus area of the image. Even when I disable these below-0.5 shots, still the box will not align.
I would think that despite the symmetry of this box, Photoscan would be able to identify unique points on the lizard skin finish and work it all out. But apparently not. So why is this?
I'm shooting 4K images, on a tripod, ISO 100, f14 with a 2-second shutter on a 70mm zoom lens with a cable release to reduce/eliminate camera shake. I am capturing RAW and processing in Photoshop to 16-bit TIFF files. I am masking every image in Photoscan.
I've included 4 sample low-res shots of the box itself. These are the shots I am feeding into Photoscan.
I've also included a screen shot of my photos pane and my model window so that you can see the results I'm getting.
I'm not new at this. I've done hundreds of models, including people and never had this problem. I picked the yellow jewelry case because of its highly irregular texture, thinking I'd make a model out of it in a couple of hours, taking it slow.
2 days later and empty-handed I'm posting this.
Thanks in advance,
Jon
As you will see, I have taped over the very reflective handle on top. In Photoscan, I have also masked out the shiny clip on the front.
Jeez - this thing WILL NOT ALIGN!
I've tried placing points. Photoscan cannot recognize them for all photos. For example, I placed a marker on the tip of the clasp on the front. Photoscan lined it up pretty well in the first few shots, giving me a small grey icon, and for the rest it put it in the wrong place.
When I "Estimate Image Quality" some shots that are tack-sharp are reported as below 0.5 even though it's my understanding that this number is a reflection of the most in-focus area of the image. Even when I disable these below-0.5 shots, still the box will not align.
I would think that despite the symmetry of this box, Photoscan would be able to identify unique points on the lizard skin finish and work it all out. But apparently not. So why is this?
I'm shooting 4K images, on a tripod, ISO 100, f14 with a 2-second shutter on a 70mm zoom lens with a cable release to reduce/eliminate camera shake. I am capturing RAW and processing in Photoshop to 16-bit TIFF files. I am masking every image in Photoscan.
I've included 4 sample low-res shots of the box itself. These are the shots I am feeding into Photoscan.
I've also included a screen shot of my photos pane and my model window so that you can see the results I'm getting.
I'm not new at this. I've done hundreds of models, including people and never had this problem. I picked the yellow jewelry case because of its highly irregular texture, thinking I'd make a model out of it in a couple of hours, taking it slow.
2 days later and empty-handed I'm posting this.
Thanks in advance,
Jon