Forest part not aligne

[ArtursJu]

Hi!
Whats the problem, if forest part not aligne. Its not all forest, but just a little part of vegetation.
Tie point limit 1,000

[Jeremiah_ROWE]

Zoom out and show us the camera positions.

[SAV]

Hi ArtursJu,

Probably not enough image overlap.

In case the overlap and image quality is OK, try to increase the key point limit to 40.000 and tie point limit to 4.000.
Alternatively, 'force' Photoscan to align pictures by using some markers on images it was struggling with and alos on adjacent images.
And last but not least, if the pictures are geotagged (= include lat, long & alt in the EXIF info) then choose REFERENCE for Pair preselection in the Align Photos window. This will help PhotoScan in the alignment process because it already (roughly) knows the location of each picture.

Regards
SAV

[BobvdMeij]

The screenshot you provided seems to depict the orthomosaic rather than the sparse point cloud, isn't it? If you I do agree with ArtursJu that this likely results from lower image overlap in that particular location on the one hand and a relatively tricky (vegetation tends to move about by wind as you take images) terrain for succesful image matching on the other.

I reckon increasing the key/tiepoint limit may help marginally, but if your overlap is indeed too low it will remain a problem to match it correctly no matter how many points you allow Photoscan to find. I find similar 'black spots' in my orthomosaics, mostly around vegetated areas and mostly in locations where my flight planning software apparently missed one or two triggers.

[Packy_GIS]

In the first moment I thought that wind and moving trees are the problem ... but it looks like poor image overlap.

Jan

[mrv2020]

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