Aligning result changes randomly

@Arthur 

What is your goal here to capture ? I mean you want to capture whole building interior or not ? If so why do you capture such 10x10m flat tiles only ?

I’d not recommend capturing these tiles as you did, especially the X pattern that you made with angled shots might not be optimal for RC since you don’t use CPs (GCPs) and the connecting shots between those 2 shot lines and the loop is missing. The loop around is OK but make sure you have connecting shots that go gradually from the loop to the X pattern and back. But overall I wouldn’t do the X pattern at all. Instead you might want to do zigzag topdown pattern as if from drone mission with connecting angled shots to the loop around. 80% frontal  and 80% lateral overlap is ideal.  But frankly without a drone and GPS signal you won’t get such pattern indoors unless you calculate it and measure before and fly it manually over inhand. Understand what I mean ?

The second option is to use CPs. Print some markers and place it in each corner of the tile and one in the middle. Make sure each CP is visible at least on 3 images. This should help and omit the need for zigzag topdown pattern.