Non-destructive detection of seed weevil-infested mango fruits by X-ray imaging

Thomas, Paul E.; Kannan, A.; Degwekar, V.H.; Ramamurthy, Manjeri S.

doi:10.1016/0925-5214(94)00019-o

Cited by 34 publications

(18 citation statements)

References 8 publications

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“…For relatively bigger seeds such as pecan or almonds and pistachio nuts with hard shells, the voltage is increased from 25 to 50 kV with current in the few mA range to increase the penetration power (Keagy et al 1996;Kim and Schatzki 2001;Kotwaliwale et al 2007Kotwaliwale et al , 2009). For inspection of fruits such as apple 35-50 kV and ~15 mA current are used, whereas fruits with hard shell seeds such as peach, apricot, and mango, 25-70 kV and 300-1,000 mA are used (Han et al 1992;Thomas et al 1993Thomas et al , 1995Schatzki et al 1997;Zwiggelaar et al 1997;Kim and Schatzki 2000). Detection of bone fragments from deboned poultry uses a setting of 30-40 keV and 16 mA (Tao and Ibarra 2000;Tao et al 2001).…”

Section: Interaction Of X-rays With Mattermentioning

confidence: 99%

X-ray Imaging

Karunakaran

Jayas

2014

Imaging With Electromagnetic Spectrum

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Section: Interaction Of X-rays With Mattermentioning

confidence: 99%

X-ray Imaging

Karunakaran

Jayas

2014

Imaging With Electromagnetic Spectrum

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“…These non-destructive quality assessment methods may be useful in the characterization and inspection of food composites before processing at an industrial scale (YANNIOTIS et al, 2011;DONEPUDI et al, 2013;THOMAS et al, 1995). The images are used to inspect the interior of specimens, and contrast can be seen when different physical properties are present.…”

Section: Introductionmentioning

confidence: 99%

“…Considerable research has been performed in advancing this type of imaging technique. In addition, its importance as a defect and inspection tool for specific features and new applications is growing fast in several areas such as food processing, cement compound analysis and microbiology (THOMAS et al, 1995;NOGUEIRA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The images are used to inspect the interior of specimens, and contrast can be seen when different physical properties are present. Normal tabletop X-ray sources can obtain images based on the absorption of the sample, where contrast comes from the medium atomic number ( VAN DER BURG et al, 1994;CICERO et al, 1998). Recently, the advent of a new generation of X-ray tubes, with a high intensity, small emitting area and high-resolution X-ray cameras made possible the observation of some coherent effects in the X-ray imaging setups .…”

Section: Introductionmentioning

confidence: 99%

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Microfocus X-ray imaging of Brazil nuts for quality control

et al. 2015

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Non-destructive quality assessment of food prior to processing is desirable in commercial facilities due to its non-invasive nature, for economic reasons and for its safety appeals. Grading Brazil nuts in this way allows for the separation of undesirable nuts to avoid contamination during the automatic nutshelling process. The aim of this study was to evaluate the feasibility of X-ray phase contrast enhanced imaging in assessing nut quality. For this goal, details of the imaging technique are described and phase contrast X-ray and microtomography imaging of nut samples are investigated. Both high quality (i.e. "sound") nuts as well as treated nuts were examined. It was concluded that both the X-ray imaging and tomography techniques have the potential to discriminate morphological features of the nut and to identify "sound" kernels from atypical ones. Larger nuts and nuts with a larger gap area between shell and kernel were concluded to have more atypical formations. Both techniques also seemed promising for use in automatic sorting lines. However, by using microtomography, the visualization of finer formations not noticeable in the X-ray images was possible. Further studies shall be carried out to investigate the nature of these formations, how they affect nut quality and their evolution with storage time. Key words: Bertholletia excelsa, fungus, microtomography, phase contrast, X-ray imaging ResumoAtualmente os grandes centros comerciais de processamento de alimentos buscam a avaliação prévia da qualidade dos produtos através de técnicas não destrutivas, devido aos apelos econômicos e de segurança alimentar. A classificação de castanhas-do-brasil através desta avaliação permite a separação das castanhas indesejáveis com a finalidade de evitar contaminações durante o processo de extração da amêndoa. O objetivo desse estudo foi avaliar a viabilidade do uso da imagem de raios-X, obtida através da técnica de contraste de fase para avaliação da qualidade da castanha. Para este objetivo, detalhes da técnica de são descritos e amostras de castanhas-do-brasil são investigadas pelas técnicas de imageamento por microtomografia e por contraste de fase de raios-X. São utilizadas castanhas saudáveis e castanhas tratadas, sendo estas últimas utilizadas com o objetivo de identificar modificações. Concluiu-se que ambas as imagens de radiografia e de tomografia de raios-X, apresentam um grande potencial para discriminar características morfológicas das castanhas e selecionar amostras saudáveis das tratadas. Dentro do conjunto de amostragem, castanhas grandes e castanhas que apresentam espaços maiores entre casca e amêndoa, mostraram formações atípicas. Ambas as técnicas mostraram-se também promissoras para serem utilizadas em linhas de produção automatizadas. Não obstante, através da microtomografia faz-se possível a visualização de características físicas mais detalhadas que não podem ser observadas usando as técnicas convencionais de imageamento de raios-X, como a radiografia convencional. A investigação da natureza d...

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“…X-ray imaging has Supported by the National Natural Science Foundation of China, Grant No. 30771243. been used to inspect internal quality, such as water core, bruise of apple (Shahin et al 1999(Shahin et al , 2002bKim et al 2000), weevil-infested mango (Thomas & Kannan 1995), and rotten onion (Shahin et al 2002a), etc. In the recent years, hyperspectral imaging has been investigated for the estimation of quality and safety of poultry (Liu et al 2003;Park et al 2006Park et al , 2007, fruits (Lu et al 1999;Lu 2003;Mehl et al 2004;Xing & Baerdemaeker 2005;Xing et al 2005Xing et al , 2007Noh & Lu 2007;Qin et al 2009), vegetables (Liu et al 2005;Ariana et al 2006), and milk (Qin & Lu 2007). Lu et al (1999) have studied hyperspectral imaging for detecting bruises on three cultivars of apples in the spectral region between 450 nm and 900 nm.…”

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confidence: 99%

Vis/NIR hyperspectral imaging for detection of hidden bruises on kiwifruits

LüQiang¹,

Tang²,

Cai³

et al. 2011

Czech J. Food Sci.

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Lü Q., Tang M.-j., Cai j.-r., Zhao j.-w., Vittayapadung S. (2011): Vis/NIR hyperspectral imaging for detection of hidden bruises on kiwifruits. Czech j. Food Sci., 29: 595-602.It is necessary to develop a non-destructive technique for kiwifruit quality analysis because the machine injury could lower the quality of fruit and incur economic losses. Bruises are not visible externally owing to the special physical properties of kiwifruit peel.we proposed the hyperspectral imaging technique to inspect the hidden bruises on kiwifruit. The Vis/NIr (408-1117 nm) hyperspectral image data was collected. Multiple optimal wavelength (682, 723, 744, 810, and 852 nm) images were obtained using principal component analysis on the high dimension spectral image data (wavelength range from 600 nm to 900 nm). The bruise regions were extracted from the component images of the five waveband images using rBF-SVM classification. The experimental results showed that the error of hidden bruises detection on fruits by means of hyperspectral imaging was 12.5%. It was concluded that the multiple optimal waveband images could be used to constructs a multispectral detection system for hidden bruises on kiwifruits.

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Non-destructive detection of seed weevil-infested mango fruits by X-ray imaging

Cited by 34 publications

References 8 publications

X-ray Imaging

X-ray Imaging

Microfocus X-ray imaging of Brazil nuts for quality control

Vis/NIR hyperspectral imaging for detection of hidden bruises on kiwifruits

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