Development of a New Threshold Based Classification Model for Analyzing Thermal Imaging Data to Detect Fungal Infection of Pistachio Kernel

Kheiralipour, Kamran; Ahmadi, Hamed; Rajabipour, Ali; Rafiee, Shahin; Javan‐Nikkhah, Mohammad; Jayas, D. S.

doi:10.1007/s40003-013-0057-7

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…Bruises take color accurate to the force value (Cubero et al 2011;Menesatti et al 2009). Therefore, a non-destructive method to detect damages which is based on a thermovision camera was used (Kheiralipour et al 2013). Research conducted by Doosti-Irani et al (2016) follows that the thermal imaging system allows to determine the relationship between inside and outside temperatures of destructed tissue.…”

Section: Introductionmentioning

confidence: 99%

Influence of Contact Surface Type on the Mechanical Damages of Apples Under Impact Loads

Komarnicki

Stopa

Szyjewicz

et al. 2017

Food Bioprocess Technol

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This paper presents an analysis of mechanical damage carried out on 'Golden Delicious' apple variety, which was subjected to impact loads during free drop against various rigid plates. For this purpose, an analysis of the contact pressure based on determined contours and surface pressure distributions at the contact point between the fruit dropped from various heights against fixed hard plates was performed. The impact test was conducted by means of Tekscan® system supported by computer verifying analysis. To obtain impact loads as well as their courses, the surface pressures and the bruise volumes were determined. Furthermore, use of ultrathin pressure sensors allowed for determination of the characteristic shape of contact area and the impact of fruit onto rigid plate. The results showed that the impact of fruit against rigid surface (concrete, wood) generates high values of maximum surface pressure and the bruise volume, observed at dropping from 10 mm. A decrease in hardness of the test material (polyethylene foam) with decreasing maximum surface pressure approximately twice was noticed. The polyethylene foam is one of the best materials which protect fruit from mechanical damage, confirmed by the relation of bruise surface to contact surface, which did not exceed 35% during the impact at 150 mm. The results of proposed studies can contribute to developing of harvest, handling, and transport processes, aiming at reduction in losses among fruit growers and production costs, i.e., by improvement of transport method.

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Section: Introductionmentioning

confidence: 99%

Influence of Contact Surface Type on the Mechanical Damages of Apples Under Impact Loads

Komarnicki

Stopa

Szyjewicz

et al. 2017

Food Bioprocess Technol

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“…These researchers often classify damage as visible permanent deformations (Sargent et al, 1989) or externally visible skin cracking and rupture (Geyer et al, 2002). Techniques to analyze damaged fruits with a nondestructive method have used thermal imaging devices (Cui et al, 2017a;Kheiralipour et al, 2013). Doosti-Irani et al (2016) used a thermal imaging camera to assess the relationship between the deep internal temperatures of tested fruit and the external temperatures at the point where bruising appeared using thermal maps and thermal bruise depth.…”

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confidence: 99%

Estimation of Tomato Bruising by Mechanical Impact Force Using Multivariate Analysis

Cui¹,

Yang²,

Son³

et al. 2018

horts

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Fresh fruit bruising caused by mechanical impact is the most problematic effect of mechanical postharvest processing of tomatoes. The conventional postharvest process of tomato fruit (Solanum lycopersicum L.) handling was surveyed from harvest to shipping preparation at a farm in Toechon in the Republic of Korea. Acceleration sensors located on the harvest boxes and fruit skin showed that the most severe impact forces (>10 g) occurred while fruit was moved in and out of the harvest box. Next, multivariate analysis was used to evaluate nondestructively the susceptibility of tomatoes to bruising by developing five estimation models incorporating quality factors and the presence of bruising resulting from peak contact forces. Linear regression models, artificial neural network (ANN) regression models, and a logistic regression model were built; the primary dependent variables were the rates of weight loss and firmness loss, and impact-induced bruising. The impact force was controlled by using a pendulum, which produced four levels of impact force on tomato fruit. Increasing the relative humidity (RH) and firmness, and decreasing the temperature and degree of weight loss decreased tomato fruit bruise damage. In addition, the proposed drop–impact measurement technique, with multivariate analysis, can be used to evaluate tomato quality nondestructively.

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“…Similarly, Kheiralipour et al (2013) tried to detect fungal infection in pistachio kernels infected by an aflatoxin-producing A. flavus isolate R5 and non-aflatoxin-producing isolate KK11 using an active thermal imaging system. Thermal images were acquired for both healthy and infected seeds before heating, directly after heating at 90°C for 90s and after being cooled at room temperature for 10s.…”

Section: Detection Of Fungal Infectionsmentioning

confidence: 99%

Emerging thermal imaging techniques for seed quality evaluation: Principles and applications

ElMasry

ElGamal

Mandour

et al. 2020

Food Research International

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Due to the massive progress occurred in the past few decades in imaging, electronics and computer science, infrared thermal imaging technique has witnessed numerous technological advancement and smart applications in non-destructive testing and quality monitoring of different agro-food produces. Thermal imaging offers a potential non-contact imaging modality for the determination of various quality traits based on the infrared radiation emitted from target foods. The technique has been moved from just an exploration method in engineering and astronomy into an effective tool in many fields for forming unambiguous images called thermograms eventuated from the temperature and thermal properties of the target objects. It depends principally on converting the invisible infrared radiation emitted by the objects into visible two-dimensional temperature data without making a direct contact with the examined objects. This method has been widely used for different applications in agriculture and food science and technology with special applications in seed quality assessment. This article provides an overview of thermal imaging theory, briefly describes the fundamentals of the system and explores the recent advances and research works conducted in quality evaluation of different sorts of seeds. The article comprehensively reviewed research efforts of using thermal imaging systems in seed applications including estimation of seed viability, detection of fungal growth and insect infections, detection of seed damage and impurities, seed classification and variety identification.

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Development of a New Threshold Based Classification Model for Analyzing Thermal Imaging Data to Detect Fungal Infection of Pistachio Kernel

Cited by 12 publications

References 10 publications

Influence of Contact Surface Type on the Mechanical Damages of Apples Under Impact Loads

Influence of Contact Surface Type on the Mechanical Damages of Apples Under Impact Loads

Estimation of Tomato Bruising by Mechanical Impact Force Using Multivariate Analysis

Emerging thermal imaging techniques for seed quality evaluation: Principles and applications

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