In fruits and vegetables size, mass, volume, and density attributes are somewhat correlated. Volume and mass together, determine fruit density related to produce consistency and flavor. Volume can also be used for harvest time prediction (Hahn and Sanchez, 2000). For instance, volume used as a fruit and vegetable sorting feature shows a 0.91 correlation coefficient with length on jalapeno chilli grading (Hahn et al., 1997). Differences in density have also been utilized for quality inspection such as seed viability test and citrus granulation test. Different mathematical models and numerical analysis methods have been applied to extract a representation of volume. Some commonly used methods to determine volume include geometric mean diameter, water displacement method, and gas displacement method.