ABSTRACT
Test weight, varietal purity, soundness, vitreousness, and maximum limit of foreign material are the five factors, depending on which grains are
basically graded worldwide. The latter four factors require visual observation by trained personnel. However, grading decisions are subjective and influenced by the individual experience of inspectors despite training. Digital image analysis uses digital images to measure the size of individual grains, and extract different features and shape-related information from the images, thus offering an objective and quantitative method for estimation of morphological parameters (Poblaciones et al.).
