Ultrasound
* Mammograms, Ultrasound (H3)
* Medical Applications -- Ultrasound, Ultrasonic (H1)
* Medical Applications, CAT, MRI, Ultrasound, Heart Models, Brain Models (H)
* Ultrasound, Ultrasonic, Image Segmentation, Contour Extraction, Contour Motion (H2)
* Ultrasound, Ultrasonic, Speckle Removal, Analysis (H2)
Uncalibrated Cameras
* Stereo: Three Dimensional Descriptions from Two or More Views, Binocular, Trinocular (H)
* Weakly Calibrated Cameras (H1)
* Conic Reconstruction and Correspondence from Two Views
Uncertainty
* Evidence Theory, Combination Techniques, Optimization Techniques (H3)
* Fuzzy Sets, Fuzzy Logic (H4)
* Matching and Recognition Using Volumes, High Level Vision Techniques, Invariants (H)
* Bayesian Modeling of Uncertainty in Low-Level Vision
* Imprecision in Computer Vision
Unsharp Mask
* Image Processing, Restoration, Enhancement, Filters, Image and Video Coding (H)
* Sharpening, Unsharp Masking (H2)
Unsupervised
* Pattern Recognition, Clustering, Statistics, Grammars, Learning, Neural Nets, Genetic Algorithms (H)
* Unsupervised Clustering, Classification (H2)
Unwraping
* Computational Vision, Regularization, Connectionist, Morphology, Scale-Space, Perceptual Grouping, Wavelets, Color, Sensors, Optical, Laser, Radar (H)
* Phase Unwrapping, Stereo Depth unwrapping (H2)
Urban Area
* 2-D Feature Analysis, Extraction and Representations, Shape, Skeletons, Texture (H)
* Texture Analysis through Markov Random Fields: Urban Areas Extraction