Benjamin Aldridge
University of Edinburgh
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Featured researches published by Benjamin Aldridge.
Springer Netherlands | 2013
Lucia Ballerini; Robert B. Fisher; Benjamin Aldridge; Jonathan Rees
This chapter proposes a novel hierarchical classification system based on the K-Nearest Neighbors (K-NN) model and its application to non-melanoma skin lesion classification. Color and texture features are extracted from skin lesion images. The hierarchical structure decomposes the classification task into a set of simpler problems, one at each node of the classification. Feature selection is embedded in the hierarchical framework that chooses the most relevant feature subsets at each node of the hierarchy. The accuracy of the proposed hierarchical scheme is higher than 93 % in discriminating cancer and potential at risk lesions from benign lesions, and it reaches an overall classification accuracy of 74 % over five common classes of skin lesions, including two non-melanoma cancer types. This is the most extensive known result on non-melanoma skin cancer classification using color and texture information from images acquired by a standard camera (non-dermoscopy).
British Veterinary Journal | 1989
M.H. Winter; Benjamin Aldridge; Philip Scott; M. Clarke
Fourteen cases of bovine spongiform encephalopathy (BSE) were diagnosed on the basis of clinical examination in a closed herd of British Friesian cows during a 9-month period from October 1987 until June 1988. The diagnosis was confirmed on histopathological examination of brain tissue from five of the six samples submitted. The main presenting clinical signs were of altered behaviour: apprehension, anxiety and hyperaesthesia. One cow was euthanized after a short period of recumbency; the remaining 13 cows were slaughtered on humane or economic grounds. No protein of animal origin had been fed to either heifers or cows in this herd during the past 5 years and there had been no direct contact with sheep. The epidemiology of BSE in this report suggests that, if the postulate of Morgan (1988) is correct, infection is ingested within the first 6 months of life and there then follows a 4-5-year period before clinical signs appear.
Veterinary Research Communications | 1991
R. Adams; M. D. Holland; Benjamin Aldridge; F. B. Garry; K.G. Odde
Measurements of arterial blood gas tensions and acid-base status provide a means of assessing how well the respiratory system is functioning. This information is essential for thorough evaluation of a compromised neonatal calf but arterial blood sampling is difficult immediately after birth. A technique for collecting blood from the brachial artery of the newborn calf is described. This technique, which uses an easily located site, has been successfully used in field studies to determine arterial blood gas values in such calves.
medical image computing and computer assisted intervention | 2009
Xiang Li; Benjamin Aldridge; Lucia Ballerini; Robert B. Fisher; Jonathan Rees
This paper shows that adding 3D depth information to RGB colour images improves segmentation of pigmented and non-pigmented skin lesion. A region-based active contour segmentation approach using a statistical model based on the level-set framework is presented. We consider what kinds of properties (e.g., colour, depth, texture) are most discriminative. The experiments show that our proposed method integrating chromatic and geometric information produces segmentation results for pigmented lesions close to dermatologists and more consistent and accurate results for non-pigmented lesions.
British Veterinary Journal | 1990
L.A. Holmes; Philip Scott; Benjamin Aldridge
Neurological examination of a heifer displaying pelvic limb ataxia and paresis progressing to a dog-sit position but with normal thoracic limb function indicated a spinal cord lesion in the low thoracic/high lumbar region. The progressive neurological deterioration despite normal radiological and cerebrospinal fluid findings were suggestive of a non-inflammatory, non-traumatic extradural compressive lesion; this was subsequently shown to be a lymphosarcoma.
American Journal of Veterinary Research | 1992
R. Adams; Franklyn B. Garry; Benjamin Aldridge; Holland; K.G. Odde
British Veterinary Journal | 1990
Philip Scott; Benjamin Aldridge; M. Clarke; R.G. Will
Javma-journal of The American Veterinary Medical Association | 1989
Philip Scott; Benjamin Aldridge; Clarke M; Will R
Veterinary Record | 1988
Philip Scott; Benjamin Aldridge; L.A. Holmes; Elspeth Milne; David Collins
The Cornell veterinarian | 1986
McCoy Dj; Simpson Rm; Olcott Bm; Benjamin Aldridge; Hodgin Ec