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Method and System for the automatic analysis of an image of a biological sample

 
: Kawanabe, Motoaki; Binder, Alexander

:
Frontpage ()

EP 2570970 A1: 20110916
German
Patent, Electronic Publication
Fraunhofer FIRST ()

Abstract
Method for the automatic analysis of an image (1, 11, 12, 13) of a biological sample with respect to a pathological relevance, wherein f) local features of the image (1,11,12,13) are aggregated to a global feature of the image (1,11,12,13) using a bag of visual word approach, g) step a) is repeated at least two times using different methods resulting in at least two bag of word feature datasets, , h) computation of at least two similarity measures using the bag of word features obtained from a training image dataset and bag of word features from the image (1, 11, 12, 13) i) the image training dataset comprising a set of visual words, classifier parameters, including kernel weights and bag of word features from the training images, j); the computation of the at least two similarity measures is subject to an adaptive computation of kernel normalization parameters and / or kernel width parameters, f) for each image (1,11,12,13) one score is computed depending on the classifier parameters and kernel weights and the at least two similarity measures, the at least one score being a measure of the certainty of one pathological category compared to the image training dataset, g) for each pixel of the image (1,11,12,13) a pixel-wise score is computed using the classifier parameters, the kernel weights, the at least two similarity measures, the bag of word features of the image (1, 11, 12, 13), all the local features used in the computation of the bag of word features of the image (1, 11, 12, 13) and the pixels used in the computations of the local features, h); the pixel-wise score is stored as a heatmap dataset linking the pixels of the image (1, 11, 12, 13) to the pixel-wise scores.

: http://publica.fraunhofer.de/documents/N-270801.html