1. A system comprising: a display to present an image; and a graphics processor including, a scan module to use a plurality of threads in the graphics processor to conduct a single instruction multiple data (SIMD) scan of data associated with an image, a local table module to generate a plurality of connection tables corresponding to the plurality of threads based on the SIMD scan, and a merge module to use a plurality of threads in the graphics processor to conduct a single phase merge of the plurality of connection tables into a global connected components labeling (CCL) table for the image.