The basic process for producing 3D models with the increasingly popular workflow.
From VFX to video games, developers and artists are always looking for ways to achieve virtual realism, and one of the most-used methods nowadays is that of creating 3D-scanned models. The process behind this is called photogrammetry, and it’s a powerful and versatile technique that has revolutionised the capture and reconstruction of the real world into the virtual one.
For the same reason, it’s preferable for you to use a full-frame camera. Manual settings such as ISO, aperture and shutter speed are the basis for controlling the exposure across all your photos, and avoiding artifacts and weird textures during the software processing stage.Your scene deserves the proper lighting, so it’s crucial that you plan out everything to ensure a successful photogrammetry project.
Use a low ISO value to minimise noise, and choose a narrow aperture to increase depth of field. Manual settings ensure the camera’s exposure remains consistent during the capture process from different angles and lighting conditions.Lighting plays a fundamental role in photogrammetry, so make sure to have adequate lighting that’s evenly distributed across the subject to minimise strong shadows or highlights.
They’re not necessary for all of your scans, but in particular cases where the background is not detailed and the floor is a plain surface, for example smooth concrete, the GCP markers can help the software to identify the location, distance and orientation of the scene.Once you’ve finished the photography, it’s time to import the files onto your computer.
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