Presets can now be shared in the same way or downloaded from the 3Dflow server. Other new features in version 4.0 include a camera calibration manager that allows users to import calibration data corresponding to real cameras from the 3Dflow online database or from an XML file. New camera calibration and preset manager as well as new functions for aerial users. It’s a post-process, so it’s not recommended for projects that require absolute accuracy, and this sometimes only increases the noise, but in some cases the resulting “fake” detail is quite noticeable. In addition, 3Dflow has introduced a new option, Enhance Mesh, which reverses the process and increases the number of geometries to a user-defined level. The release revises the mesh decimation algorithm of 3DF Zephyr to get more details from the high-resolution model when a mesh is reduced to a target polygon number. New mesh decimation and enhancement mesh algorithms. In the before and after comparisons shown in 3DFlow’s blog, the resulting geometry is also significantly sharper, especially when using the new high-frequency gain option. The meshing was very variable: with own data sets the times were almost halved, with others they even increased. In 3Dflow’s own tests, SfM shows the largest constant increase in speed – somewhere between 20 and 80% – with MvS a smaller but consistent increase. The 4.0 release focuses on the speed at which geometry is generated: 3Dflow describes the structure of motion (SfM), multi-view stereo (Mvs) and mesh phases as significantly faster. The company has also released a new product, FlowEngine: a C++ SDK based on the underlying technology.įaster, more accurate geometry reconstruction.
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