IEEE Trans Image Process - Object-level image segmentation using low level cues.

Tópicos

{ imag(2675) segment(2577) method(1081) }
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Resumo

This paper considers the problem of automatically segmenting an image into a small number of regions that correspond to objects conveying semantics or high-level structure. Although such object-level segmentation usually requires additional high-level knowledge or learning process, we explore what low level cues can produce for this purpose. Our idea is to construct a feature vector for each pixel, which elaborately integrates spectral attributes, color Gaussian mixture models, and geodesic distance, such that it encodes global color and spatial cues as well as global structure information. Then, we formulate the Potts variational model in terms of the feature vectors to provide a variational image segmentation algorithm that is performed in the feature space. We also propose a heuristic approach to automatically select the number of segments. The use of feature attributes enables the Potts model to produce regions that are coherent in color and position, comply with global structures corresponding to objects or parts of objects and meanwhile maintain a smooth and accurate boundary. We demonstrate the effectiveness of our algorithm against the state-of-the-art with the data set from the famous Berkeley benchmark.

Resumo Limpo

paper consid problem automat segment imag small number region correspond object convey semant highlevel structur although objectlevel segment usual requir addit highlevel knowledg learn process explor low level cue can produc purpos idea construct featur vector pixel elabor integr spectral attribut color gaussian mixtur model geodes distanc encod global color spatial cue well global structur inform formul pott variat model term featur vector provid variat imag segment algorithm perform featur space also propos heurist approach automat select number segment use featur attribut enabl pott model produc region coher color posit compli global structur correspond object part object meanwhil maintain smooth accur boundari demonstr effect algorithm stateoftheart data set famous berkeley benchmark

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