Bread porosity evaluation by histogram analysis

Abstract

An algorithm for automatic image thresholding with application in bread porosity evaluation is presented in this paper. The algorithm is named HisAnalysis and it is implemented on C#. It is made an assessment of accuracy between physicochemical method for bread porosity evaluation and two methods for automatic determination of porosity using Tsai algorithm for binarization and HisAnalysis algorithm. Two different types of ROI (Region of Interest) - rectangular and elliptical are used with these algorithms and the results are compared to each other. The experimental results show that the proposed algorithm with elliptical ROI has strong correlation coefficient with physicochemical method for bread porosity evaluation.