dc.creatorLarese, Mónica G.
dc.creatorGómez, Juan Carlos
dc.date2007
dc.date2012-10-11T19:46:49Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/22311
dc.descriptionComplementary DNA (cDNA) microarrays are a powerful high throughput technology developed in the last decade allowing researchers to analyze the behaviour and interaction of thousands of genes simultaneously. The large amount of information provided by microarray images requires automatic techniques to develop accurate and ef cient processing. Each spot in the microarray contains the hybridization level of a single gene. One of the most important features of these images are the regularity and pseudo-periodicity implicit in the spot arrangement. In this paper, an automatic approach based on texture analysis techniques is proposed to localize spots in microarray images. The method estimates the displacement vectors which characterize the texture (i.e. the spot arrangement). This is achieved by means of applying the generalized Hough transform on the 2D autocorrelation function previously segmented via morphological operations. The obtained displacement vectors are used to generate a grid template which is matched to the original image. The root mean square error between the estimated locations and the ones computed via a semiautomatic tool is computed to evaluate the accuracy of the process. The method yields promising results with low errors.
dc.descriptionV Workshop de Computación Gráfica, Imágenes Y Visualización
dc.descriptionRed de Universidades con Carreras en Informática (RedUNCI)
dc.formatapplication/pdf
dc.format677-688
dc.languageen
dc.relationXIII Congreso Argentino de Ciencias de la Computación
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 2.5 Argentina (CC BY-NC-SA 2.5)
dc.subjectCiencias Informáticas
dc.subjectInformática
dc.titleAutomatic Spot Addressing in cDNA Microarray Images
dc.typeObjeto de conferencia
dc.typeObjeto de conferencia


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