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Agronomía Costarricense

versão impressa ISSN 0377-9424


PADRON PEREIRA, Carlos Alberto; PADRON LEON, Gisel Marié; MONTES HERNANDEZ, Adriana Isabel  e  OROPEZA GONZALEZ, Rafael Antonio. Color determination in tomato epicarp using Computer Vision System during ripening. Agron. Costarricense [online]. 2012, vol.36, n.1, pp.97-111. ISSN 0377-9424.

The evolution of color in tomatoes samples, during ripening under refrigeration or at room temperature, was studied by Computer Vision System (CVS). CVS consisted in a lighted stage, a CCD digital camera and a computer (Laptop), all calibrated. The digital processing of images was performed with the Adobe® Photoshop®  CS3 Extended software, with which averaged images on L*, a* and b* coordinates were obtained. The proceeding tested, using CVS, allowed to study the variations of color during  the  ripening  of  tomatoes  from  images, by  means  of  rectangular  coordinates  (L*,  a*, b*). The ratio a*/b* and polar coordinates (c*, hº), showing statistically significant differences between samples determined (p<0,05).

Palavras-chave : Color spaces; image processing techniques; Lycopersicum esculentum Mill.; measurement of color in tomatoes; Photoshop®.

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