The properties of rice and rice products, such as colour, chalkiness, size and density have
to be kept within prescribed limits. The colour of rice is usually determined using a colorimeter or colorimetric spectrophotometer [29, 30]. The amount of broken rice kernels
and the amount of chalky rice kernels are mainly determined by visual selection of these
kernels from a large quantity of rice. This visual selection is very laborious, requires trained
personnel and resulted in a significant amount of incorrect classified rice kernels.