Hi @qhz991029,
For items used in downstream processing, we recommend taking advantage of the downsampling job, limiting particle/volume alignment resolutions, and lowpass filtering resulting volumes, and recommend against modifying the information content of particles stacks in this context as this could get messy.
If you intend to use these particle for visualization purposes, @rwaldo has provided a good script that allows you to do this using CS-tools.
All the best,
Kye