Method and means for image processing

G - Physics – 06 – T

Patent

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G06T 5/00 (2006.01)

Patent

CA 2569791

The present invention relates to image processing in general and more specifically to methods and means facilitating the human detection of physical object representations in colour images with a wide range of applications such as aviation and air transport, land transportation, shipping, submarine work, underwater inspections, medical investigations, marine archaeology, land archaeology, agriculture, surveillance and security, food safety, energy systems and forestry. The invention achieves this by providing an image processing method for a colour image representation, Ic, formed by at least two distinct colour pixel matrixes, Mi, by carrying out a histogram equalization processing step (250), which is carried out separately for each colour pixel matrix. Different pre-washing steps may be applied prior to the histogram equalization processing step (250). The invention also provides a number of apparatuses adapted for different applications using the method according to the invention.

La présente invention concerne le traitement d'images en général et en particulier des procédés et dispositifs facilitant la détection par l'homme de représentations d'objets physiques dans des images en couleurs, ceci dans les applications les plus diverses telles qu'aviation et transport par air, transport par terre ou par mer, travaux sous-marins, inspections sous l'eau, recherches médicales, archéologie marine, archéologie terrestre, agriculture, surveillance et sécurité, sécurité alimentaire, systèmes d'énergie ou industrie forestière. A cette fin, on soumet à un traitement d'images une représentation en image couleur, lc, formée par au moins deux matrices de pixels, Mi, avec exécution d'une opération de traitement d'égalisation d'histogramme (250) qui est menée séparément pour chaque matrice de pixels couleur. Ladite opération de traitement d'égalisation d'histogramme (250) peut être précédée de diverses opération de "pré-nettoyage". L'invention concerne également un certain nombre de dispositifs faisant intervenir le procédé de l'inVention pour différentes applications

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