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General / How to loosen tolerances in alignment to deal with minimal or poor image overlap
« on: August 28, 2019, 07:04:21 PM »
Hi all,
I have a data set that has relatively reasonable overlap but in areas of dense forest the overlap seems to be just poor enough that I am unable to get alignment. I have gaps in the data and have tried all the different accuracy options during alignment (highest to lowest) to get the images to get some sort of alignment but no luck. When I view matches with those images that dont align I can see that there are many "invalid points" but they all look like good / valid points between images. I have tried also increasing and decreasing the horizontal accuracy of the initial position. Still no change. I am working with imagery from a PhaseONE IXU1000 sensor that has really good camera geometry but at very high resolution where the trees have significant lean between images. I think this is whats creating the lack of alignment. We are unable to recollect data in this area so I am hoping someone has any ideas on how to reduce the tolerances in the initial alignment phase that will force agisoft to give me even a poor result which would be better than the gaps I have now.
I have attached a screen grab.
Thanks all.
I have a data set that has relatively reasonable overlap but in areas of dense forest the overlap seems to be just poor enough that I am unable to get alignment. I have gaps in the data and have tried all the different accuracy options during alignment (highest to lowest) to get the images to get some sort of alignment but no luck. When I view matches with those images that dont align I can see that there are many "invalid points" but they all look like good / valid points between images. I have tried also increasing and decreasing the horizontal accuracy of the initial position. Still no change. I am working with imagery from a PhaseONE IXU1000 sensor that has really good camera geometry but at very high resolution where the trees have significant lean between images. I think this is whats creating the lack of alignment. We are unable to recollect data in this area so I am hoping someone has any ideas on how to reduce the tolerances in the initial alignment phase that will force agisoft to give me even a poor result which would be better than the gaps I have now.
I have attached a screen grab.
Thanks all.
