Image Understanding at the GRASP Laboratory

Research in the GRASP Laboratory has two main themes, parameterized multi-dimensional segmentation and robust decision making under uncertainty. The multi-dimensional approach interweaves segmentation with representation. The data is explained as a best fit in view of parametric primitives. These primitives are based on physical and geometric properties of objects and are limited in number. We use primitives at the volumetric level, the surface level, and the occluding contour level, and combine the results. The robust decision making allows us to combine data from multiple sensors. Sensor measurements have bounds based on the physical limitations of the sensors. We use this information without making a priori assumptions of distributions within the intervals or a priori assumptions of the probability of a given result.

[1]  Ruzena Bajcsy,et al.  Segmentation versus object representation—are they separable? , 1989 .

[2]  R. Bajcsy,et al.  Quantitative and qualitative measures for the evaluation of the superquadric models , 1989, [1989] Proceedings. Workshop on Interpretation of 3D Scenes.

[3]  Steven A. Shafer,et al.  Using color to separate reflection components , 1985 .

[4]  Ruzena Bajcsy,et al.  Recovery of Parametric Models from Range Images: The Case for Superquadrics with Global Deformations , 1990, IEEE Trans. Pattern Anal. Mach. Intell..

[5]  Max Mintz,et al.  Robust Multi-Sensor Fusion: A Decision-Theoretic Approach , 1990, Other Conferences.

[6]  Sang Wook Lee,et al.  Image Segmentation with Detection of Highlights and Inter-Reflections Using Color , 1989 .

[7]  Ruzena Bajcsy,et al.  A Framework for Observing a Manipulation Process , 1990 .

[8]  Ruzena Bajcsy,et al.  Segmentation as the search for the best description of the image in terms of primitives , 1990, [1990] Proceedings Third International Conference on Computer Vision.

[9]  J. Cohen Dependency of the spectral reflectance curves of the Munsell color chips , 1964 .

[10]  Max Mintz,et al.  Robust fusion of location information , 1988, Proceedings. 1988 IEEE International Conference on Robotics and Automation.

[11]  Berthold K. P. Horn,et al.  Determining Optical Flow , 1981, Other Conferences.

[12]  R. Gershon The use of color in computational vision , 1987 .

[13]  Alok Gupta,et al.  Part description and segmentation using contour, surface, and volumetric primitives , 1989, Other Conferences.

[14]  D. B. Judd,et al.  Spectral Distribution of Typical Daylight as a Function of Correlated Color Temperature , 1964 .

[15]  P. Ramadge,et al.  Supervisory control of a class of discrete event processes , 1987 .

[16]  Thomas S. Huang,et al.  Uniqueness and Estimation of Three-Dimensional Motion Parameters of Rigid Objects with Curved Surfaces , 1984, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[17]  Takeo Kanade,et al.  Image Segmentation And Reflection Analysis Through Color , 1988, Defense, Security, and Sensing.

[18]  Yu-Chi Ho,et al.  Performance evaluation and perturbation analysis of discrete event dynamic systems , 1987 .