Monitoring and modeling of apple slices shrinkage during drying in hot air using texture features of laser backscattering images

Mozaffari, Mansoureh; Mahmoudi, Asghar; Jamshidi, Bahareh

doi:10.22092/erams.2017.107124.1121

Document Type : Original Article

Authors

¹ PHD student of Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.

² Associate professor of Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

³ Assistant professor of Agricultural Engineering Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.

https://doi.org/10.22092/erams.2017.107124.1121

Abstract

The present paper investigated the feasibility of using texture-based features of laser backscattering images in monitoring and modeling of apple slices shrinkage during hot air drying. The backscattering imaging was performed at three wavelengths (650, 780 and 880 nm) in the visible and near-infrared regions. The acquired images were subjected to four texture analysis methods including first-order statistics of image histogram, co-occurrence matrix, gray level run-length matrix and wavelet transform. Stepwise multiple linear regressions was used to develop models and determine the most effective features by using individual types of feature sets and their combinations as inputs of calibration models. The results showed the capability of the texture features extracted from the laser backscattering images in the near-infrared wavelength range for prediction of apple slices shrinkage; by using homogeneity feature of co-occurrence matrix-90˚ at 880 nm (with R_p²=0.95, RMSE_p=5.15) and fusion of the four feature sets extracted from different texture analysis methods at 780nm (with R_p²=0.94, RMSE_p=5.61), could make models with high accuracy. This study showed that Laser backscattering imaging technique can be used as a non-destructive, rapid and low-cost method for prediction of the shrinkage in the process of hot air drying of apple slices.

Keywords

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Agricultural Mechanization and Systems Research

Monitoring and modeling of apple slices shrinkage during drying in hot air using texture features of laser backscattering images

References

References

Volume 18, Issue 68 - Serial Number 68
September 2017
Pages 133-150

Monitoring and modeling of apple slices shrinkage during drying in hot air using texture features of laser backscattering images

References

References

Volume 18, Issue 68 - Serial Number 68September 2017Pages 133-150

Volume 18, Issue 68 - Serial Number 68
September 2017
Pages 133-150