Hi,
nice article but he doesnt seem to cover my scenario of object not on turntable with me moving around the object then moving it and repeating the walkaround.
I am writing up a step by step for different shooting scenarios, which I will then post here, hopefully it can be made a sticky so its always seen at top of forum, as other forums do. I have sent it to you for approval but I am seeking clarification on method 1 now, see your emails.
Initially focusing on METHOD D for the above situation. I think it also needs altering as using your method 2 it mentioned the requirement for a shot of the background without the object, that's not what was done or was possible in my sessions.
I have tried to Incorporate what David Cockey in another thread wrote.
I frequently use Mask from Model in situations where the background is moving relative to the object by a small amount, such as a boat tied to a dock or an object which was bumped while being photographed. I align photos, create a dense point cloud and build an initial mesh without masking. Masks are then created using the initial mesh. The masked photos are re-aligned. The masks are then removed and a new dense point cloud is created and mesh built.
So I now have my Method D as follows, but I am unsure of step 10 onwards.
METHOD D.Photos taken moving around the object (object not on turntable) . Background may move during the overall photoshoot.
For object deliberately moved after one photo sequence, e.g to photo its underside, or items in background change.
1st sequence object upright, 2nd sequence object placed on its side, 3rd sequence object placed upside down.
1 ) Create chunk per sequence
2) Align Photos in each chunk.
3) reduce the bounding box in each chunk to fit just your model. (use Model>Show/Hide Items>show region as well as region resize tools)
4) create rough model (from the lowest quality dense cloud, for example) for the limited area of interest ,
5) create a mesh.
6) roughly cut unwanted polygons that are not related to the object.
7) Then use Import Masks -> From Model option. This operation would apply mask to every aligned camera according to the rough mesh model.
8 Repeat Import Masks -> From Model option for each chunk,
9) re align the masked photos
10) remove the masks (HOW IS THAT DONE ?)
11) then merge chunks
12) then re-align the complete image set from scratch using Apply Masks to Key Points option.
13) After that build dense cloud or mesh.
I did have...
10) then merge chunks
11) then re-align the complete image set from scratch using Apply Masks to Key Points option.
12) After that build dense cloud or mesh.
Can someone correct these steps for me.
and tell me what to add to step 10 as I am not sure how masks are removed or even why !
I have gone for separate chunks as when I put all the pics into one chunk I ended up with two models on the same gridded baseboard, the right way up and the upside down one and couldnt then place a region around it as it was not one model. If the background had been masked then that wouldnt have happened, but this method is about making the mask, a catch22 situation !
Steve