Agisoft Metashape
Agisoft Metashape => Bug Reports => Topic started by: JRM on September 09, 2015, 11:37:06 AM
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Hi,
I'm trying to produce an orthophoto using field photographies and georeferenced markers, the 3D texture created with mosaic and color correction looks good but I can't obtain the same quality when exporting the ortho with the same parameters.
The mesh is clean so I do not understand why the final output is showing these defects.
The build version used is 1.1.3 2018 x64, see the joined report for more information on the model.
This isn't a blocking issue as I could export the 3d model to blender, do an ortho render and georef the output with a gis software but I would like to know the reason behind this behaviour.
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Hi,
Here (https://drive.google.com/file/d/0B1sJg8zddqSPSzVKaUFsb0IxNWs/view?usp=sharing)is a model with the same problem on the ortho export, could somebody test it with the version 1.2 to see if it is reproducible ? I don't have the admin rights to install a beta version on my workstation.
Regards,
JRM
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Hello JRM,
The difference is related to the different mapping options. It sees that you are using Generic mapping mode for the texture generation and it results in a multiple texture atlas charts, Whereas orthomosaic is always represented as single image.
The issues are mostly visible on non-horizontal surfaces are are caused by the oblique camera positions.
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Hi Alexey, effectivly the texture blending was different so I've uploaded (https://drive.google.com/file/d/0B1sJg8zddqSPN1FPU25OUTZvam8/view?usp=sharing)the model shown in the first post, the ortho texture and the ortho export were both created using color correction, a mosaïc blending and a max size of 3000px.
Do you mean that it is not possible to get an orthophoto with agood visual quality using oblique imagery ?