RT conferenceObject
T1 Color transform to optimize fruit ripeness discrimination in dichromats
A1 Antela, K.
A1 Morales-Rubio, A.
A1 Besada, Cristina
A1 Tarancón, Paula
A1 Cervera, M. L.
A1 Luque, M. J.
A2 GeneA.
K1 Color transform
K1 Ripeness
AB Aim: To develop and test a color transform for red-green colordefectives to enhance tomatoipeness judgements.Experimental Method: Congenital protan and deutan colordefectives suffer sensitivity losses in the red-green mechanism [1]compromising performance in color-discrimination-based everydaytasks [2], which may be compensated by procedures designed tooptimize image color gamuts to minimize color confusion [3]. Given thatred-green defectives retain normal discrimination along the blue-yellowaxis in color space [1], we propose a simple procedure to recode redgreencolor differences in CIELAB color space as blue-yellow colordifferences, to allow red-green defectives to correctly judge the ripenessof tomatoes.An agricultural cooperative of Perelló supplied and classified bycolor the tomato samples in a controlled manner in four standardripeness stages. Sample color was measured with a portable MinoltaCR-300 colorimeter (Minolta Co. Ltd, Osaka, Japan). Tomatoes werephotographed with a Smartphone (Samsung Galaxy S7 edge model SMG935Fwith a 12.2 MP camera). RGB values of the image weretransformed to XYZ values using Matlab’s sRGB transform, and then toCIEL*a*b*, using as reference white a white sample illuminated as thesamples. Dichromatic perception of the images was simulated by thecorresponding pair algorithm [4]. The modified palette was obtained byexchanging the values of the red-green (a*) and blue-yellow (b*)descriptors (Fig. 1).
YR 2020
FD 2020
LK http://hdl.handle.net/20.500.11939/7423
UL http://hdl.handle.net/20.500.11939/7423
LA en
NO Antela, K., Morales-Rubio, A., Besada, C., Tarancón, P., Cervera, M.L., & Luque, M.J. (2020). Color transform to optimize fruit ripeness discrimination in dichromats. En: Gene, A., Luque, MJ., Sañudo, F., Bueno, I., Herández, R., García, MC., Esteve, J. & Díez, MA. (Eds). V Congreso Internacional de Jóvenes Optometristas. pp: 83-84.
DS MINDS@UW
RD May 27, 2022