Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

25 years ago, Jianbo Shi introduced Normalized Cuts (spectral clustering), a graph-theoretic approach to perceptual grouping that became a staple in unsupervised image segmentation. While the original ...

GRIDGEN is a computer program for creating layered quadtree grids for use with numerical models, such as the MODFLOW-USG program for simulation of groundwater flow. The program begins by reading a ...

From losing 100 pounds to publishing a book and learning to ride a bike, readers shared with us what they were most proud of this year.

Computer Vision is an exciting research area that studies how to make computers efficiently perceive, process, and understand visual data such as images and videos. The ultimate goal is for computers ...