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1 2002

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Analysis of fruit and vegetable surface color

Baranyai L., Szepes A.

Machine Graphics and Vision

2002

Vol. 11, No. 2/3

351-361

Changes of color on the surfaces of tomatoes, mushrooms and apples were measured with digital omage processing techniques. Texture analysis methods were applied to identify the stage of ripeness and defects, such as mechanical injuries and microbiological infection. Distributions of red, green, blue color components and intensity values were shown by hisograms. Differences in intensities - in the directions of 0°, 45°, 90°, and 135° - were also collected. First - order statistical parameters and coordinates of polar quality points for sum and defference histogarms were calculated and evaluated. Classification powers of different color signals were compared.