Hello,
As I mentioned in the video, my needs are a bit specific since the film industry has specific texture requirements. Typically, we employ a polarized filter on the camera and position two light sources at 45-degree angles on either side of the objects, also using polarized lighting. This setup, known as “crossed polarized,” effectively eliminates 100% of reflections. I’m not entirely certain how well the Miraco scanner would accommodate this setup. Specially if the technology is based on light to capture the geometry.
Furthermore, we need the capability to manipulate shadows and highlights effectively, which is why we shoot in RAW format with a minimum of 16 bits to ensure the utmost flexibility in post-production. It may change but the current textures seems to be 8bits .jpg only
There are two methods for processing textures: utilizing pictures taken during the scan of each frame and assigning a color value to each face. Textures provide higher resolution, but during my tests, I found that vertex color appeared more accurate.
I maintain regular communication with the team regarding texture-related matters. I want to clarify that I am not affiliated with Revopoint, so I may not have information on the distinctions between the beta version of the scanner I have and the final product. However, based on @PUTV answers, it seems that my unit is likely an early developmental version.
From what I understand, and a moderator can correct me if I’m mistaken, the scanner employs a technique similar to laser scanning. It scans one patch, capturing associated images, then proceeds to the next frame, repeating the process iteratively. Once it has collected all the point cloud data and images, it consolidates them into a single mesh and a unified texture. However, while the geometry fusion is remarkably precise and consistent, merging textures can present challenges. The geometry remains consistent, but the color quality is highly contingent on factors like reflections, camera settings, and the object’s position relative to light sources.
During testing, I occasionally noticed visible seams between the pictures taken, which is why I primarily opted for the vertex mode rather than relying on texture color.
If the final version of the scanner addresses these texture issues and introduces the ability to export 16-bit TIFF or possibly 32-bit .exr files, the Miraco could potentially reach a level suitable for professional production use in geometry AND texturing. Once this is achieved, I might primarily use photogrammetry only for capturing entire environmental scenes, and use the Miraco for everything else.
To sum it up, my encounter with the scanner left me thoroughly impressed, and I was pleasantly taken aback by its capabilities. With the exception of the texture-related challenges (which might be attributed to my unit being an early beta version), this device stands out as a truly remarkable piece of technology.
