User's Manual

Post Processing
27 User Guide
5.3.1.1 Filter Controls
5.3.2 Spatial Filter
*The implementation is based on paper by Eduardo S. L. Gastal and Manuel M. Oliveira.
Key characteristics:
• 1D edge-preserving spatial filter using high-order domain transform.
• Linear-time compute, not affected by the choice of parameters.
The filter performs a series of 1D horizontal and vertical passes or iterations, to enhance
the smoothness of the reconstructed data.
5.3.2.1 Filter Controls
5.3.3 Temporal Filter
The temporal filter is intended to improve the depth data persistency by manipulating
per-pixel values based on previous frames. The filter performs a single pass on the data,
adjusting the depth values while also updating the tracking history. In cases where the
pixel data is missing or invalid the filter uses a user-defined persistency mode to decide
whether the missing value should be rectified with stored data. Note that due to its
reliance on historic data the filter may introduce visible blurring/smearing artefacts, and
therefore is best-suited for static scenes.