A
Azriel Rosenfeld
Researcher at University of Maryland, College Park
Publications - 613
Citations - 50771
Azriel Rosenfeld is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Image processing & Feature detection (computer vision). The author has an hindex of 94, co-authored 595 publications receiving 49426 citations. Previous affiliations of Azriel Rosenfeld include Meiji University.
Papers
More filters
Journal ArticleDOI
Threshold Selection Using Quadtrees
TL;DR: A simple class of piecewise constant approximations to an image is constructed as follows: start with the entire image, subdivide it into quadrants if its gray level standard deviation is high, and repeat the process for each quadrant so that each of them can be approximated by a constant value, namely, its mean.
Proceedings Article
The Development of a General Framework for Intelligent Document Image Retrieval.
David Doermann,Jaakko Sauvola,Hannu Kauniskangas,Christian K. Shin,Matti Pietikäinen,Azriel Rosenfeld +5 more
TL;DR: The general framework, feature extraction modules, query capabilities, a graphical query interface, and the application interface are introduced and each component of the system is demonstrated and how the query mechanisms can be used to handle both content and structural queries eeectively.
Journal ArticleDOI
The chain pyramid: hierarchical contour processing
TL;DR: A novel hierarchical approach toward fast parallel processing of chain-codable contours is presented, which makes possible fast, O(log(image/sub -/size), computation of contour representation in discrete scale-space.
Journal ArticleDOI
The Max Roberts Operator is a Hueckel-Type Edge Detector
TL;DR: Hueckel's edge detector finds the best-fitting ideal step edge to a given picture neighborhood by expanding the neighborhood and step edge in terms of a set of nine basis functions.