INVESTIGADORES
LAGORIO MarÍa Gabriela
capítulos de libros
Título:
Sensing chlorophyll, carotenoids and anthocyanin concentration in leaves with spatial resolution from digital image (invited manuscript)
Autor/es:
CORDON, G. B.; LAGORIO, M. G.
Libro:
In Color in Food: Technological and Psychophysical Aspects
Editorial:
CRC press
Referencias:
Lugar: New York; Año: 2012; p. 121 - 132
Resumen:
The aim of this work is to develop a computational vision-methodology to infer the pigments
concentration in plant leaves with spatial resolution from a digital image. For this purpose,
reflectance spectra of uniformly colored leaves were then recorded. On these leaves,
chlorophyll-a, chlorophyll-b, carotenoids and anthocyanins were determined by extraction
and posterior spectrophotometric measurement. From the reflectance spectra, the RGB
coordinates were calculated. Then, correlations between the color coordinates and the
pigment concentrations were obtained. On the other hand, images from heterogeneously
colored leaves were captured using a commercial scanner. The scanned images were digitally
processed to obtain R, G and B bands. Using the correlations between the colour coordinates
(R, G and B) and pigments concentration, deducted for homogeneous leaves, the
concentration of pigments per pixel in heterogeneous leaves were estimated