NIKOLAOS NIKOLOUDAKIS

Dr. NIKOLAOS NIKOLOUDAKIS

Cyprus University of Technology, Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus
orcid

Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 December 2015 in Agronomy for Sustainable Development
Verified
Journal Article
Closed access
MHM. Iftikhar Hussain
M. Iftikhar Hussain
Dionysia Angeliki LyraDionysia Angeliki Lyra
Dionysia Angeliki Lyra
MFMuhammad Farooq
Muhammad Farooq
NIKOLAOS NIKOLOUDAKISNIKOLAOS NIKOLOUDAKIS
NIKOLAOS NIKOLOUDAKIS
DKDr Nauman Khalid
Dr Nauman Khalid

1 August 2020 in Plant Physiology and Biochemistry
Verified
Journal Article
Closed access
Dimitrios FanourakisDimitrios Fanourakis
Dimitrios Fanourakis
SASasan Aliniaeifard
Sasan Aliniaeifard
ASArne Sellin
Arne Sellin
HGHabtamu Giday
Habtamu Giday
Oliver KörnerOliver Körner
Oliver Körner
GTGeorgios Tsaniklidis
Georgios Tsaniklidis

8 August 2021 in Plants
Verified
Journal Article
Open access
PDF file
ANAmin Nasiri
Amin Nasiri
Amin Taheri-GaravandAmin Taheri-Garavand
Amin Taheri-Garavand
Dimitrios FanourakisDimitrios Fanourakis
Dimitrios Fanourakis
Yudong ZhangYudong Zhang
Yudong Zhang
NIKOLAOS NIKOLOUDAKISNIKOLAOS NIKOLOUDAKIS
NIKOLAOS NIKOLOUDAKIS
Extending over millennia, grapevine cultivation encompasses several thousand cultivars. Cultivar (cultivated variety) identification is traditionally dealt by ampelography, requiring repeated observations by experts along the growth cycle of fruiting plants. For on-time evaluations, molecular genetics have been successfully performed, though in many instances, they are limited by the lack of referable data or the cost element. This paper presents a convolutional neural network (CNN) framework for automatic identification of grapevine cultivar by using leaf images in the visible spectrum (400–700 nm). The VGG16 architecture was modified by a global average pooling layer, dense layers, a batch normalization layer, and a dropout layer. Distinguishing the intricate visual features of diverse grapevine varieties, and recognizing them according to these features was conceivable by the obtained model. A five-fold cross-validation was performed to evaluate the uncertainty and predictive efficiency of the CNN model. The modified deep learning model was able to recognize different grapevine varieties with an average classification accuracy of over 99%. The obtained model offers a rapid, low-cost and high-throughput grapevine cultivar identification. The ambition of the obtained tool is not to substitute but complement ampelography and quantitative genetics, and in this way, assist cultivar identification services.

9 July 2021 in Plants
Verified
Journal Article
Open access
PDF file
Amin Taheri-GaravandAmin Taheri-Garavand
Amin Taheri-Garavand
ANAmin Nasiri
Amin Nasiri
Dimitrios FanourakisDimitrios Fanourakis
Dimitrios Fanourakis
SFSoodabeh Fatahi
Soodabeh Fatahi
MOMahmoud Omid
Mahmoud Omid
NIKOLAOS NIKOLOUDAKISNIKOLAOS NIKOLOUDAKIS
NIKOLAOS NIKOLOUDAKIS
On-time seed variety recognition is critical to limit qualitative and quantitative yield loss and asynchronous crop production. The conventional method is a subjective and error-prone process, since it relies on human experts and usually requires accredited seed material. This paper presents a convolutional neural network (CNN) framework for automatic identification of chickpea varieties by using seed images in the visible spectrum (400–700 nm). Two low-cost devices were employed for image acquisition. Lighting and imaging (background, focus, angle, and camera-to-sample distance) conditions were variable. The VGG16 architecture was modified by a global average pooling layer, dense layers, a batch normalization layer, and a dropout layer. Distinguishing the intricate visual features of the diverse chickpea varieties and recognizing them according to these features was conceivable by the obtained model. A five-fold cross-validation was performed to evaluate the uncertainty and predictive efficiency of the CNN model. The modified deep learning model was able to recognize different chickpea seed varieties with an average classification accuracy of over 94%. In addition, the proposed vision-based model was very robust in seed variety identification, and independent of image acquisition device, light environment, and imaging settings. This opens the avenue for the extension into novel applications using mobile phones to acquire and process information in situ. The proposed procedure derives possibilities for deployment in the seed industry and mobile applications for fast and robust automated seed identification practices.

1 February 2020 in Gene
Verified
Journal Article
Closed access
GTGeorgios Tsaniklidis
Georgios Tsaniklidis
PPPolyxeni Pappi
Polyxeni Pappi
ATAthanasios Tsafouros
Athanasios Tsafouros
SCSpyridoula N. Charova
Spyridoula N. Charova
NIKOLAOS NIKOLOUDAKISNIKOLAOS NIKOLOUDAKIS
NIKOLAOS NIKOLOUDAKIS
Costas DelisCostas Delis
Costas Delis

1 February 2005 in Plant Science
Verified
Journal Article
Closed access
GBGeorgios Banilas
Georgios Banilas
AMAnastassios Moressis
Anastassios Moressis
NIKOLAOS NIKOLOUDAKISNIKOLAOS NIKOLOUDAKIS
NIKOLAOS NIKOLOUDAKIS
PHPolydefkis Hatzopoulos
Polydefkis Hatzopoulos