Estimation de l'échelle des néoplasies en coloscopie par détection de la profondeur de défocalisation

Conference paper


Chadebecq, F., Tilmant, C. and Bartoli, A. 2013. Estimation de l'échelle des néoplasies en coloscopie par détection de la profondeur de défocalisation. ORASIS 2013 - Journées francophones des jeunes chercheurs en vision par ordinateur. Cluny, France 10 - 14 Jun 2013 HAL Open Science.
TypeConference paper
TitleEstimation de l'échelle des néoplasies en coloscopie par détection de la profondeur de défocalisation
AuthorsChadebecq, F., Tilmant, C. and Bartoli, A.
Abstract

La coloscopie est l'examen médical privilégié dans le cadre du diagnostic et du traitement des maladies colorectales. Cette technique qualifiée de peu invasive permet aux gastro-entérologues d'explorer la cavité du côlon et d'ôter les néoplasies - proliférations cellulaires - telles que les polypes qui peuvent évoluer en tumeurs malignes. La taille, la texture ainsi que la forme des néoplasies constituent des critères essentiels à leurs diagnostics. L'estimation de la taille est cependant difficile à réaliser de part la perte de l'information de profondeur de la scène imagée par le gastro-entérologue. Nous proposons une amélioration de notre technique de détection de la Profondeur de Défocalisation (PD) permet- tant l'estimation de l'échelle des scènes endoscopiques par extraction de la PD au sein d'une séquence vidéo. L'estimation conjointe du suivi affine de la néoplasie au cours de la séquence vidéo et du flou de mise au point permet d'inférer avec une meilleure précision la taille des néoplasies. Par ailleurs, la méthode proposée est mieux adaptée aux conditions réelles de coloscopie pour lesquelles la manipulation du gastroscope peut être délicate.

LanguageFrench
ConferenceORASIS 2013 - Journées francophones des jeunes chercheurs en vision par ordinateur
Proceedings TitleORASIS - Journées francophones des jeunes chercheurs en vision par ordinateur
PublisherHAL Open Science
Publication dates
Online2013
Publication process dates
Accepted2013
Deposited28 Feb 2024
Output statusPublished
Web address (URL)https://uca.hal.science/hal-00829442
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