Development of an acquisition protocol and a segmentation algortihm for wounds of cutaneous Leishmaniasis in digital images

Kristians Diaz, Benjamín Castañeda, César Miranda, Roberto Lavarello, Alejandro Llanos

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2 Citas (Scopus)


We developed a protocol for the acquisition of digital images and an algorithm for a color-based automatic segmentation of cutaneous lesions of Leishmaniasis. The protocol for image acquisition provides control over the working environment to manipulate brightness, lighting and undesirable shadows on the injury using indirect lighting. Also, this protocol was used to accurately calculate the area of the lesion expressed in mm2 even in curved surfaces by combining the information from two consecutive images. Different color spaces were analyzed and compared using ROC curves in order to determine the color layer with the highest contrast between the background and the wound. The proposed algorithm is composed of three stages: (1) Location of the wound determined by threshold and mathematical morphology techniques to the H layer of the HSV color space, (2) Determination of the boundaries of the wound by analyzing the color characteristics in the YIQ space based on masks (for the wound and the background) estimated from the first stage, and (3) Refinement of the calculations obtained on the previous stages by using the discrete dynamic contours algorithm. The segmented regions obtained with the algorithm were compared with manual segmentations made by a medical specialist. Broadly speaking, our results support that color provides useful information during segmentation and measurement of wounds of cutaneous Leishmaniasis. Results from ten images showed 99% specificity, 89% sensitivity, and 98% accuracy.

Idioma originalInglés
Título de la publicación alojadaMedical Imaging 2010
Subtítulo de la publicación alojadaImage Processing
EdiciónPART 1
EstadoPublicada - 2010
EventoMedical Imaging 2010: Image Processing - San Diego, CA, Estados Unidos
Duración: 14 feb. 201016 feb. 2010

Serie de la publicación

NombreProgress in Biomedical Optics and Imaging - Proceedings of SPIE
NúmeroPART 1
ISSN (versión impresa)1605-7422


ConferenciaMedical Imaging 2010: Image Processing
País/TerritorioEstados Unidos
CiudadSan Diego, CA


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