%0 Journal Article %T Developing a postharvest color changes identification system of melon rind using image processing %J DYSONA - Applied Science %I E-NAMTILA %Z 2708-6283 %A Mohi Alden, Khaled %A Alabboud, Michael %A Soltani, Forouzandeh %A kalantari, Siamak %D 2021 %\ 04/01/2021 %V 2 %N 2 %P 13-20 %! Developing a postharvest color changes identification system of melon rind using image processing %K Melon %K Color measurement %K postharvest %K image processing %K Chromameter %R 10.30493/das.2021.263257 %X Rind color in melon is one of the major fruit attributes at harvest and postharvest during the storage period. Since commercially available chromameter results are expressed as the average values of few chosen points, these results may be inaccurate when representing the whole surface color of a large fruit such as melon. This research aimed to develop a portable and low-cost chromameter system to measure the color parameters of melon rind in CIELAB color space at harvest and calculate color changes after cold storage period using image analysis method. For this purpose, an imaging box with appropriate hardware was designed. A mobile phone was used to acquire the images. The utilized camera was standardized with a standard color chart. The obtained images were processed using ImageJ processing software. To evaluate the proposed system, the rind color parameters of 36 different melon genotypes were recorded using both the developed system and a standard chromameter device. A multivariate linear regression (MLR) correlation for each color component was extracted. The coefficients of determination (R2) for the regression models were 93.1%, 99.5%, and 99.9% for L, a, and b, respectively. After adjusting the image results according to the obtained models, Mann–Whitney test showed no significant differences in any of the color parameters (L, a, or b) between the developed system and the values recorded by the chromameter. The developed chromameter system has also shown a convenient ability to measure rind color changes even without data adjustment. Therefore, this system can be considered a valid alternative color measurement device, especially in postharvest research. %U https://applied.dysona.org/article_127072_eb2ddfc1baefacc504e8dd8d45bdc71a.pdf