If a previously built project requires modification, instead of building the entire project again from the first step of the build process, you have the option to run the build again, incorporating some of a previous build’s results. Rebuilding provides flexibility both with regard to the project section (entire project, only error tiles or selected tiles) and project steps that are to be performed. Alternative build parameters can also be set. PhotoMesh will automatically determine what processing is required to apply the changes to the project, by rebuilding the project from “Auto”. E.g., when rebuilding a project after modifying a water polygon, only affected tiles are rebuilt from the point cloud step. Similarly, when rebuilding after reimporting exported models, only affected tiles are rebuilt, either from the texturing step, if just models were imported, or from the output step, if both models and textures were imported.

Note:   If you want to create an entirely new build, seeCreating a New Build Version” in this chapter for information.

To rebuild:

1.      On the Home tab, in the Build group, click the arrow next to Build, and select the required option:

§  Build

§  Build and Rerun Failed Tasks – Continue the build process including rerunning of any build failed task. Tiles with insufficient photo coverage for reconstruction are not rebuilt. To rebuild these tiles, select the Rebuild Selected Tiles option, and perform all build steps (i.e., select Complete Project).

§  Rebuild Selected Tiles – Rebuild only the tiles that are currently selected.

The Build Parameters dialog box is displayed.

2.      Select the project steps and enter the required parameters. SeeSetting Build Parameters and Processing the Build” in this chapter for information.

Note:       It is generally recommended to select Auto for the Start From step. In this case, PhotoMesh will automatically determine what processing must be performed to complete the project.

Note:       Some of the parameters will only apply if tiles need to be recreated.

Note:       Output fields are not available when rebuilding error tiles.

3.      PhotoMesh Build Manager then opens. Select the required fusers, and then click Build. SeeUsing Fusers” in the “Fusers” chapter for more information.

Note:       The expected production times for a 9 gigapixel project (0.06 km2 and 3 cm GSD) on an i7 10th generation, 8 core CPU, with 16 GB RAM, and a local SSD drive are as follows:

·        Approximately 20 minutes for photo preparation (207 photos)

·        2 minutes for a single AT tile

·        7 hours and 30 minutes for the reconstruction tiles

The total machine time adds up to 7 hours and 55 minutes (approximately 52 minutes per gigapixel).