Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor

In the inspection work involving foodstuffs in food factories, there are cases where people not only visually inspect foodstuffs, but must also physically touch foodstuffs with their hands to find foreign or undesirable objects mixed in the product. To contribute to the automation of the inspection...

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Autores principales:	Kazuhiro Shimonomura, Tinghsuan Chang, Tomomi Murata
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	food inspection tactile sensing camera image analysis tactile image sensor Mechanical engineering and machinery TJ1-1570 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/c5e935240df9423aa63a347b1f178b5d
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spelling	oai:doaj.org-article:c5e935240df9423aa63a347b1f178b5d2021-12-03T06:59:31ZDetection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor2296-914410.3389/frobt.2021.774080https://doaj.org/article/c5e935240df9423aa63a347b1f178b5d2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/frobt.2021.774080/fullhttps://doaj.org/toc/2296-9144In the inspection work involving foodstuffs in food factories, there are cases where people not only visually inspect foodstuffs, but must also physically touch foodstuffs with their hands to find foreign or undesirable objects mixed in the product. To contribute to the automation of the inspection process, this paper proposes a method for detecting foreign objects in food based on differences in hardness using a camera-based tactile image sensor. Because the foreign objects to be detected are often small, the tactile sensor requires a high spatial resolution. In addition, inspection work in food factories requires a sufficient inspection speed. The proposed cylindrical tactile image sensor meets these requirements because it can efficiently acquire high-resolution tactile images with a camera mounted inside while rolling the cylindrical sensor surface over the target object. By analyzing the images obtained from the tactile image sensor, we detected the presence of foreign objects and their locations. By using a reflective membrane-type sensor surface with high sensitivity, small and hard foreign bodies of sub-millimeter size mixed in with soft food were successfully detected. The effectiveness of the proposed method was confirmed through experiments to detect shell fragments left on the surface of raw shrimp and bones left in fish fillets.Kazuhiro ShimonomuraTinghsuan ChangTomomi MurataFrontiers Media S.A.articlefood inspectiontactile sensingcameraimage analysistactile image sensorMechanical engineering and machineryTJ1-1570Electronic computers. Computer scienceQA75.5-76.95ENFrontiers in Robotics and AI, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	food inspection tactile sensing camera image analysis tactile image sensor Mechanical engineering and machinery TJ1-1570 Electronic computers. Computer science QA75.5-76.95
spellingShingle	food inspection tactile sensing camera image analysis tactile image sensor Mechanical engineering and machinery TJ1-1570 Electronic computers. Computer science QA75.5-76.95 Kazuhiro Shimonomura Tinghsuan Chang Tomomi Murata Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
description	In the inspection work involving foodstuffs in food factories, there are cases where people not only visually inspect foodstuffs, but must also physically touch foodstuffs with their hands to find foreign or undesirable objects mixed in the product. To contribute to the automation of the inspection process, this paper proposes a method for detecting foreign objects in food based on differences in hardness using a camera-based tactile image sensor. Because the foreign objects to be detected are often small, the tactile sensor requires a high spatial resolution. In addition, inspection work in food factories requires a sufficient inspection speed. The proposed cylindrical tactile image sensor meets these requirements because it can efficiently acquire high-resolution tactile images with a camera mounted inside while rolling the cylindrical sensor surface over the target object. By analyzing the images obtained from the tactile image sensor, we detected the presence of foreign objects and their locations. By using a reflective membrane-type sensor surface with high sensitivity, small and hard foreign bodies of sub-millimeter size mixed in with soft food were successfully detected. The effectiveness of the proposed method was confirmed through experiments to detect shell fragments left on the surface of raw shrimp and bones left in fish fillets.
format	article
author	Kazuhiro Shimonomura Tinghsuan Chang Tomomi Murata
author_facet	Kazuhiro Shimonomura Tinghsuan Chang Tomomi Murata
author_sort	Kazuhiro Shimonomura
title	Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
title_short	Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
title_full	Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
title_fullStr	Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
title_full_unstemmed	Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor
title_sort	detection of foreign bodies in soft foods employing tactile image sensor
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/c5e935240df9423aa63a347b1f178b5d
work_keys_str_mv	AT kazuhiroshimonomura detectionofforeignbodiesinsoftfoodsemployingtactileimagesensor AT tinghsuanchang detectionofforeignbodiesinsoftfoodsemployingtactileimagesensor AT tomomimurata detectionofforeignbodiesinsoftfoodsemployingtactileimagesensor
_version_	1718373896848146432

Detection of Foreign Bodies in Soft Foods Employing Tactile Image Sensor

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