Chunlong Fan

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
Circle curve fitting is always the important issue of the engineering technology. The effect of circle curve fitting is influenced by both the data quality and fitting method. In this paper, using the special properties of circle, that's the error value of any two radius is zero. Then the method of circle curve fitting was proposed, by finding the minimum(More)
Traditional computations of reachability preservation based on breadth-first search (BFS) results usually focus on small-scale datasets on stand-alone. In order to solve the bottlenecks of memory capacity and computing speed while traditional approaches manipulate large-scale datasets and intermediate data generated, we propose a MapReduce-based approach to(More)
In order to obtain more robust face recognition results, the paper proposes an image preprocessing method based on local approximation gradient (LAG). The traditional gradient is only calculated along 0° and 90°; however, there exist many other directional gradients in an image block. To consider more directional gradients, we introduce a novel LAG(More)
  • 1