booktitle = "2016 8th International Conference on Knowledge and
Smart Technology (KST)",
title = "{3D} reconstruction and feature extraction for
agricultural produce grading",
year = "2016",
pages = "136--141",
abstract = "This paper examines the grading of agricultural
produce from multiple images using colour and texture
properties. Some types of agricultural produce need to
be inspected from multiple views in order to assess the
entire appearance; however, using multiple images may
obtain redundant data. Therefore, techniques are
presented to reconstruct a 3D object, create new images
without duplicated object areas and extract colour and
texture features for evaluation. The performance of
using multiple view images without duplicated object
regions is compared with those of using only top-view
images and the original multiple view images.
Experiments are performed on apple and guava grading
using kNN, NN, SVM and GP for classification.
Performance differences from the different image sets
are compared using McNemar's test and the Friedman
test. It is found that the performance when using
multiple view images is superior to that when using
single-view images for all experiments. Employing
features extracted from multiple view images without
object area duplication achieves significantly higher
accuracy than employing the original multiple view
images for apple grading, but their performances do not
differ significantly for guava inspection.",