Data Compression, MPEG

Analysis of the number of bits needed during internal computation of the Discrete Cosine Transform for an 8x8 MPEG coefficient block in order to pass the IEEE Precision Test (Std. 1180-1990). Ongoing research and determination by simulation.
Dr. Ken Vollmar

 

Numerical Analysis, Floating Point Numbers

"Programming techniques for analysis of IEEE 750 Floating Point number behavior," in submission.
Dr. Ken Vollmar

 

Data Structures, Graph Theory

"Finding the maximal number of edges in a connected graph with restrictions on cycle lengths," presented at the 1998 meeting of the Missouri Academy of Science.
Dr. Ken Vollmar

 

Component Histograms and Image Understanding

Gray-value-histograms have been used as a primary tool to analyze the structure of images in the pixel level understanding. From gray-value-histograms, we could get only distribution of the gray values of pixels in an image and the location of each individual pixel would not help us significantly to understand the structure of an image. In this project, we are going to develop a method for image understanding by applying a theory of parameter-dependent connected components. Since a connected component posses much richer distinguishable properties than a single pixel does, we may study the structure of images in a higher lever.
Dr. Yang Wang
 

Hierarchical Correspondence of Gray Connected Components in Stereo Images Using Epipolar Geometry

The depth information of a 3D object is essential in many applications such as machine vision, robotics, laser ranging, remote sensing. For a pair of stereo images that are projections of the same 3-D object from different points of view, if we could determine which object in one image corresponds to a given object in the other image, then the principles of stereopsis enable us to compute the depth of this object. Finding the correspondence between stereo images is known as the stereo matching problem. In this project, we are developing a new feature-based method for hierarchical stereo matching.
Dr. Yang Wang


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