Guy L. Scott

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We describe a widely applicable method of grouping-or clustering-image features (such as points, lines, corners, flow vectors and the like). It takes as input a "proximity matrix" H-a square, symmetric matrix of dimension N (where N is the number of features). The element i,j of H is an initial estimate of the "proximity" between the i-th and yth features.(More)
Studies of synaptogenesis in the developing organ of Corti in the intact mouse and in culture indicate that the inner and outer hair cells contain three populations of synaptic ribbons, i.e. ribbons adjacent to nerve fibres, free intracellular ribbons and misplaced ribbons apposed to non-neuronal elements. Ribbons adjacent to nerve fibres can be further(More)
We have compared the biochemical expression of cholinergic enzymes with the morphological differentiation of efferent nerve fibers and endings in the cochlea of the postnatally developing mouse. Choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) are present in the newborn cochlea at specific activities 63% and 25%, respectively, of their(More)
A relaxation algorithm for the computation of optic flow at edge elements (edgels) is presented. Flow is estimated only at intensity edges of the image. Edge elements , extracted from an intensity image, are used as the basis for the algorithm. A matching strength or weight surface is computed around each edgel and neighbourhood support obtained to enhance(More)
Hildreth described a method of extracting the normal component of optic flow along a moving closed contour. She also described an algorithm-based on gradient descent of recovering the smoothest full flow field consistent with the normal flow. Her iterative method is somewhat slow. It also leaves open the question of what, if anything, we are going to say(More)
Multiple injections of horseradish peroxidase (HRP) were placed in the occipital cortex of rats, including all striate and extrastriate visual areas, to examine with the electron microscope the population of retrogradely labeled and unlabeled cells in the dorsal lateral geniculate nucleus (LGN), for the purpose of ultrastructurally identifying geniculate(More)
OBJECTIVES Throughout the 20th Century, it has been postulated that the knee moves on the basis of a four-bar link mechanism composed of the cruciate ligaments, the femur and the tibia. As a consequence, the femur has been thought to roll back with flexion, and total knee arthroplasty (TKA) prostheses have been designed on this basis. Recent work, however,(More)