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Quality control

The Quality control module groups the placement quality metrics: fit accuracy on the cloud, deviation from design, duplicates, volume overlaps.

While Filters computes geometric filters (relations between neighboring blocks), Quality control focuses on metrics of fidelity to the reference cloud and internal consistency of the structure.

Compute accuracy

Computes, for each block, the median distance between the reference cloud points around the block and the block's surface. This is the main accuracy score of SEABIM Editor: the lower it is, the better the block matches the cloud.

To visualize via the Change color scale action by picking the accuracy scalar field.

Compute accuracy

Typical usage

Run Compute accuracy after a registration (action Register selection - Adaptive dist of the Edit module) to check that the blocks are well fitted. Blocks in red (high accuracy value) deserve a new registration or manual inspection.

Compute differential

Computes the distance between the reference cloud points and the structure model (point-cloud vs blocks differential). Produces a point cloud colored by deviation, highlighting the residual gaps: cloud pockets not covered by blocks, areas where blocks overflow the cloud, etc.

Lets you quickly spot zones that need a complementary manual reconstruction.

Compute differential

Check for duplicates

Detects blocks that are too close to each other by computing the nearest-neighbor distance. Below a certain threshold, two blocks likely represent the same physical reality (detection duplicate).

To use typically after automatic detection to clean the structure before registration.

Check for duplicates

Overlap

Highlights blocks whose volume intersects with a neighbor's: two blocks cannot occupy the same physical space, so an overlap signals a positioning error.

The result is a scalar field overlap expressing the fraction of the block volume intersecting with its neighbors.

Overlap

Difference with Contacts

Contacts counts blocks that touch. Overlap detects blocks that overlap (which is physically impossible and thus necessarily a placement defect).