Ekstraksi Fitur Circularity untuk Pengenalan Varietas Kopi Arabika

AbstrakKopi merupakan salah satu minuman yang sangat populer di dunia dan digemari oleh banyak orang termasuk di Indonesia. Kopi terdiri dari berbagai varietas, salah satunya adalah varietas arabika. Varietas kopi dapat memiliki kenampakan yang berbeda – beda misalnya seperti perbedaan warna, bentuk, ataupun tekstur. Oleh karena itu, terkadang petani ataupun pemilik coffee shop dapat melakukan kesalahan dalam mengenali varietas kopi arabika yang dijual ataupun yang dibeli. Hal ini juga akan mempengaruhi penentuan harga kopi tersebut, karena masing-masing varietas kopi arabika memiliki harga yang berbeda-beda. Untuk itu, diperlukan sistem yang juga mampu mengenali varietas kopi arabika secara akurat sehingga dapat digunakan sebagai second opinion bagi para petani ataupun pemilik coffee shop dalam mengenali varietas kopi arabika. Salah satu cara yang dapat dilakukan adalah dengan metode pencitraan. Tahap awal yang dilakukan adalah praproses yaitu cropping citra yang dilakukan secara manual, kemudian segmentasi menggunakan metode Otsu. Tahap selanjutnya adalah ekstraksi fitur bentuk menggunakan circularity dan klasifikasi menggunakan MultiLayer Perceptron. Hasil klasifikasi menunjukkan tingkat akurasi yang diperoleh sebesar 80%, sensitivitas 83,33% dan spesifisitas 76,7%.Kata kunci: ekstraksi fitur, kopi, klasifikasi, segmentasiAbstractCoffee is one of the most popular beverages in the world  and is favored by many people including Indonesians. Coffee consists of many variety, one of them is arabica. Coffee variety can have different features such as differences in color, shape, or texture. Therefore, sometimes farmers of coffee shop owners can make mistakes in recognizing the variety of arabica coffee that are sold or purchased. This will also affect the determination of coffee’s price, because each variety of arabica coffee have different prices. Hence, a capable system which can recognize arabica coffee accurately is required to be used as a second opinion for farmers or coffee shop owners in recognizing these variety. One of the methods that can be done is imaging. The initial stage is pre-processing by cropping the images manually, followed by segmentation using Otsu method. The next stage is shape based feature extraction using circularity and the last is classification using MultiLayer Perceptron. Classification results show 80% level of accuracy, 83.33% sensitivity, and 76.7% specificity.Keywords: feature extraction, coffee, classification, segmentatio

Effect of curing conditions and harvesting stage of maturity on Ethiopian onion bulb drying properties

The study was conducted to investigate the impact of curing conditions and harvesting stageson the drying quality of onion bulbs. The onion bulbs (Bombay Red cultivar) were harvested at three harvesting stages (early, optimum, and late maturity) and cured at three different temperatures (30, 40 and 50 oC) and relative humidity (30, 50 and 70%). The results revealed that curing temperature, RH, and maturity stage had significant effects on all measuredattributesexcept total soluble solids

Colour coded

This 300 word publication to be published by the Society of Dyers and Colourists (SDC) is a collection of the best papers from a 4-year European project that has considered colour from the perspective of both the arts and sciences.The notion of art and science and the crossovers between the two resulted in application and funding for cross disciplinary research to host a series of training events between 2006 and 2010 Marie Curie Conferences & Training Courses (SCF) Call Identifier: FP6-Mobility-4, Euros 532,363.80 CREATE – Colour Research for European Advanced Technology Employment. The research crossovers between the fields of art, science and technology was also a subject that was initiated through Bristol’s Festival if Ideas events in May 2009. The author coordinated and chaired an event during which the C.P Snow lecture “On Two Cultures’ (1959) was re-presented by Actor Simon Cook and then a lecture made by Raymond Tallis on the notion of the Polymath. The CREATE project has a worldwide impact for researchers, academics and scientists. Between January and October 2009, the site has received 221, 414 visits. The most popular route into the site is via the welcome page. The main groups of visitors originate in the UK (including Northern Ireland), Italy, France, Finland, Norway, Hungary, USA, Finland and Spain. A basic percentage breakdown of the traffic over ten months indicates: USA -15%; UK - 16%; Italy - 13%; France -12%; Hungary - 10%; Spain - 6%; Finland - 9%; Norway - 5%. The remaining approximate 14% of visitors are from other countries including Belgium, The Netherlands and Germany (approx 3%). A discussion group has been initiated by the author as part of the CREATE project to facilitate an ongoing dialogue between artists and scientists. http://createcolour.ning.com/group/artandscience www.create.uwe.ac.uk.Related papers to this research: A report on the CREATE Italian event: Colour in cultural heritage.C. Parraman, A. Rizzi, ‘Developing the CREATE network in Europe’, in Colour in Art, Design and Nature, Edinburgh, 24 October 2008.C. Parraman, “Mixing and describing colour”. CREATE (Training event 1), France, 2008

Intelligent Circuits and Systems

ICICS-2020 is the third conference initiated by the School of Electronics and Electrical Engineering at Lovely Professional University that explored recent innovations of researchers working for the development of smart and green technologies in the fields of Energy, Electronics, Communications, Computers, and Control. ICICS provides innovators to identify new opportunities for the social and economic benefits of society.　 This conference bridges the gap between academics and R&D institutions, social visionaries, and experts from all strata of society to present their ongoing research activities and foster research relations between them. It provides opportunities for the exchange of new ideas, applications, and experiences in the field of smart technologies and finding global partners for future collaboration. The ICICS-2020 was conducted in two broad categories, Intelligent Circuits & Intelligent Systems and Emerging Technologies in Electrical Engineering