StockCG release PLY PointCloud importer a plugin for Maya that allows you to import point clouds PLY (file) to Maya Particle.
-Imports Ascii PLY files with point cloud with position ,rgb and quality (as opacity) data.
-Best for up to 1000000 points per file load .(can do more but takes a long time).
-Imports as particles or nParticles.
- Supports Maya 2013/2014/2015
For more info, please you see: