Statistical Models of Shape: Optimisation and Evaluation
Rhodri Davies · Carole Twining · Chris Taylor
Dec 2008 · Springer Science & Business Media
Ebook
302
Pages
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About this ebook
The goal of image interpretation is to convert raw image data into me- ingful information. Images are often interpreted manually. In medicine, for example, a radiologist looks at a medical image, interprets it, and tra- lates the data into a clinically useful form. Manual image interpretation is, however, a time-consuming, error-prone, and subjective process that often requires specialist knowledge. Automated methods that promise fast and - jective image interpretation have therefore stirred up much interest and have become a signi?cant area of research activity. Early work on automated interpretation used low-level operations such as edge detection and region growing to label objects in images. These can p- ducereasonableresultsonsimpleimages,butthepresenceofnoise,occlusion, andstructuralcomplexity oftenleadstoerroneouslabelling. Furthermore,- belling an object is often only the ?rst step of the interpretation process. In order to perform higher-level analysis, a priori information must be incor- rated into the interpretation process. A convenient way of achieving this is to use a ?exible model to encode information such as the expected size, shape, appearance, and position of objects in an image. The use of ?exible models was popularized by the active contour model, or ‘snake’ [98]. A snake deforms so as to match image evidence (e.g., edges) whilst ensuring that it satis?es structural constraints. However, a snake lacks speci?city as it has little knowledge of the domain, limiting its value in image interpretation.
About the author
Chris Taylor is a romance author who started out as a nurse, then a career in law, then a wife and mother. She finally found time to dedicate to writing and she found her calling. In 2013, she had success as a finalist in the RWA Golden Heart Award and in the Romantic Suspense category. She also won the RWA Australian Emerald Award. Her career as a criminal lawyer came in handy as she writes mystery and intrigue. She combines both in her romantic suspense stories. She writes the Sydney Legal Series and the Sydney Harbour Hospital Series.
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