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"The purpose of this paper is to classification of three main types of Malaysian honey (Acacia, Kelulut and Tualang) according to their botanical origin using UV–Vis Spectroscopy and digital camera. This paper presented the classification of the honey based on two characteristics from three (3) types of local honey, namely the antioxidant contents and colour variations. The former uses the UV spectroscopy of selected wavelength range, and the latter using RGB digital camera. Principal Component Analysis (PCA) was used for both methods to reduce the dimension of extracted data. The Support Vector Machine (SVM) was used for the classification of honey. The assessment was done separately for each of the methods, and also on the fusion of both data after features extraction and association. This paper shows that classification of the fusion method improved significantly compared to single modality Honey classification based on the fusion method was able to achieve 94% accuracy. Hence, the proposed methods have the ability to provide accurate and rapid classification of honey products in terms of origin. The proposed system can be applied in Malaysia honey industry and further improve the quality assessment and provide traceability."

"Skripsi ini membahas tentang analisis distorsi kamera digital pada Fujifilm X-T30 Mark II dengan lensa wide 16 mm. Parameter orientasi dan kesalahan citra kamera digital melibatkan kalibrasi diri dengan perangkat lunak berbasis phyton: Google Colab untuk memproses gambar yang diperoleh dari gambar pola papan catur. Hasil pengukuran kontrol untuk jarak objek yang diperiksa 2 meter di atas bidang papan catur, keduanya memiliki jarak pandang yang signifikan jumlah yang diperoleh memungkinkan peneliti untuk memperoleh analisis perbedaan distorsi untuk masing-masing hasil. Studi yang dilakukan menunjukkan bahwa dalam hal pengukuran fotogrametri yang sangat presisi yang dilakukan dengan menggunakan lensa Fujinon XF 16mm yang dipasang pada kamera, adalah optimal untuk melakukan kalibrasi di bidang uji fotografi. Hasil eksperimen dengan jelas menunjukkan hubungan antara akurasi kalibrasi kamera dan perhitungan area bingkai yang diisi dengan bidang uji. Metode yang penulis usulkan memerlukan beberapa perhitungan dan kami menghitungnya secara independen, metode ini sederhana sehingga distorsi lensa dapat dihitung dengan cepat. Eksperimen dilakukan untuk kedua metode, yang hasilnya menunjukkan bahwa metode yang diusulkan memiliki kinerja yang lebih baik dibandingkan dengan metode optimasi penuh waktu non-nyata

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This thesis deals with the distortion analysis of digital camera on the Fujifilm X-T30 Mark II with a 16 mm wide lens. The orientation parameters and the image errors of the digital camera involved self-calibration with phyton based software: Google Colab to process the images obtained from chessboard pattern image. The results of the control measurement for the examined object distance of 2 meters above chessboard field, both has significant range of point of view the obtained amount may allow the researcher to gain analyzed the differences of the distortion for each of the results. The conducted studies showed that in the case of very precise photogrammetric measurements performed by means of the Fujinon XF 16mm lens equipped on the camera, it is optimal to conduct calibration in a photography test field. The results of the experiments clearly show a relation between the accuracy of the camera calibrations and the calculation of the frame area filled with the test field. The methods that the writer propose required a few calculations and we calculated it independently, these methods are simple that the lens distortion can be rapidly calculated. Experiments were carried out for both methods, results of which show that the proposed methods are favorably comparable in performance with the non-real-time full optimization method."

"ABSTRAKSaat ini, pengukuran dimensi zona inhibisi masih menggunakan alat pengukur manual seperti penggaris atau jangka sorong. Kini dengan perkembangan teknologi memungkinkan pengukuran dilakukan dengan berbasis kamera digital dan pengolahan citra. Adanya perangkat penunjang lain seperti sumber cahaya, dapat menyebabkan posisi kamera tidak tegak lurus terhadap objek pengukuran. Pada penelitian ini diperkenalkan sistem koreksi tilting pada pengukuran zona inhibisi berbasis kamera. Sistem yang dikembangkan terdiri dari perangkat keras (instrumen pengukuran dan kamera) dan perangkat lunak. Teknik pengolahan citra seperti transformasi, deteksi tepi, dan deteksi garis yang digunakan untuk membangun sistem koreksi tilting secara otomatis ini. Pengujian telah dilakukan dengan menggunakan objek kalibrator checkerboard standar dan objek zona inhibisi, pada berbagai variasi orientasi sudut kemiringan dan rotasi objek. Secara umum, berdasarkan hasil pengujian, sistem yang dibangun telah berhasil diimplementasikan untuk pengukuran dimensi zona inhibisi secara tidak tegak lurus. Koreksi tilting mampu memperbaiki performa sistem pengukuran dengan penurunan kesalahan hingga 39,6%. Sudut maksimal dengan tingkat toleransi yang masih dapat diterima adalah 40°.

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ABSTRAKCurrently, the measurements of the Zone of Inhibition are still using manual measurement tools such as a ruler or caliper. Now with the development of technology enables this measurement based on digital cameras and image processing. The presence of another supporting devices such as light sources, causing the camera position not perpendicular to the object. This study introduces the tilt correction system on camera-based measurement of the inhibition zones, which consists of hardware (measuring instruments and cameras) and software. Image processing techniques such as geometrical transformations, edge detection, and line detection is used to build the automated tilt correction system. The experiments have been conducted using standard checkerboard calibrator objects and Zone of Inhibition objects at various orientations and the angle of rotation of the object. In general, based on experiment results, the system has been successfully implemented for not perpendicular dimensional measurements of zone of inhibition. Tilt correction system improves the measurement system performance with a reduction in estimated errors up to 39,6%. The maximum angle with a tolerance level that is acceptable is 40°."

"ABSTRAKLatar belakang penelitian : Penentuan warna gigi dapat dilakukan dengan beberapa cara yaitu dengan teknik langsung seperti dengan penggunaan shade guide ,yaitu mengamati langsung gigi geligi dan menetapkan warna sesuai dengan shade tab. Akan tetapi cara ini memiliki kekurangan karena penentuan warna tersebut subjektif, perbedaan persepsi warna antara operator juga dapat dipengaruhi oleh cahaya ruangan. Cara lain pada penentuan warna dapat menggunakan spektrofotometer, suatu alat yang digunakan untuk mengukur warna dengan cara melewatkan cahaya dengan panjang gelombang tertentu pada suatu objek. Alat ini memiliki akurasi tinggi dalam penentuan warna akan tetapi masih sangat mahal harganya. Pada perkembangan terakhir kamera digital dengan tambahan lensa makro dan ring flash telah dijadikan standar dalam penentuan warna gigi karena memiliki nilai akurasi yang sangat tinggi. Penggunaan kamera jenis lain saat ini banyak digunakan oleh dokter gigi namun setiap jenis kamera memiliki tingkat akurasi yang berbeda beda. Tujuan : Penelitian ini dilaksanakan untuk menganalisis penentuan warna gigi yang diperoleh dari beberapa jenis kamera digital. Metode : Penelitian dilakukan pada hasil foto gigi anterior dari 87 subjek yang diperoleh dengan menggunakan kamera DSLR, kamera mirrorless, kamera prosumer dan kamera smartphone. kemudian dilakukan pengukuran nilai CIE L a b pada warna hasil foto tersebut menggunakan perangkat lunak adobe photoshop CS 6 Hasil : Hasil uji bivariat Kruskal ndash; Wallis dengan post hoc Mann Whitney dengan nilai p < 0,05 didapatkan bahwa hasil pengukuran CIE L a b dari kamera DSLR, kamera mirrorless, prosumer dan kamera smartphone berbeda bermakna. Kesimpulan : Berdasarkan penelitian ini secara umum dapat disimpulkan bahwa terdapat perbedaan nilai ketepatan warna gigi anterior yang diperoleh kamera DSLR, kamera mirrorless, kamera prosumer dan kamera pada smartphone.

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ABSTRACTPurpose To analyze differences in anterior teeth color accuracy taken by several digital cameras, which are DSLR, mirrorless, prosumer and smartphone cameras. Background Tooth color can be determined in several ways, the first one is by matching shade guide directly to the patient rsquo s teeth. This method has it rsquo s limitations, such as the difference in color perception among operators, room lighting, and ambience from surrounding environment. Another way is by using a spectrophotometer to assess the color by exposing the teeth with light of a specific wavelength. This tool is very accurate, but also very expensive. Therefore digital cameras with macro lens and additional light ring flash have been used lately as a standard since it is very accurate in determining the color of teeth. Dentists nowadays have been using different types of cameras, but the accuracy of each type to assess color is still debatable. Objective This study was conducted to analyze the accuracy of tooth color determination by several types of digital cameras. Method This study was conducted on 87 subjects. Photograph of anterior teeth on 87 subject was taken with DSLR, mirrorless, prosumer and smartphone cameras. Value of CIE L a b on anterior teeth rsquo s color, measured with Adobe Photoshop CS 6. Results Kruskal Wallis bivariate test with post hoc Mann Whitney at the measurement of CIE L a b from DSLR cameras, prosumer, mirrorless cameras and smartphone cameras showed a result that is significantly different p "

"This book provides a straightforward, comprehensive introduction to photography for the digital photographer. Detailed step-by-step photo sequences and concise discussions show you how to execute photography processes and special techniques using actual equipment and materials, while a full chapter on troubleshooting provides help when you need it. Numerous high-quality, full-color and duotone reproductions of works by well-known photographers such as Ansel Adams and Alfred Stieglitz offer inspiration and guidance. From "seeing" and composing the shot to applying special techniques and working in Photoshop, this information-packed book covers everything you need to know to become a successful digital photographer -- Source other than Library of Congress"

"ABSTRAKKemampuan inhibitor Imidazoline dalam menginhibisi baja karbon API 5L Grade B dalam lingkungan NaCl 3.5% diinvestigasi dengan menggunakan metode Electrochemical impedance spectroscopy (EIS) dalam berbagai variasi konsentrasi. Konsentrasi yang digunakan pada penelitian kali ini adalah 0 ppm, 50 ppm, 10 ppm, 150 ppm, 200 ppm, dan 250 ppm. Hasil pengujian menunjukkan bahwa ketika melewati konsentrasi optimum (100 ppm), nilai Rct dan efisiensi inhibitor akan berada pada nilai yang konstan, yang masing-masing nilainya adalah 503 Ω dan 40.76%. Plot impedansi vs frekuensi yang ditunjukkan oleh kurva Bode Modulus mendukung hasil analisis data sebelumnya yang menunjukkan nilai ketahanan pada konsentrasi 100 ppm memiliki ketahanan yang paling besar pada frekuensi rendah maupun tinggi, yang nilainya hampir mencapai 400 Ω pada frekuensi rendah dan 15 Ω pada frekuensi tinggi.

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ABSTRACT

The performance of Imidazoline based commercial corrosion inhibitor on carbon steel API 5L Grade B on NacL 3.5% solution was investigated using Electrochemical Impedance Spectroscopy methods. Inhibitor concentration which used in these experiments was 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, and 250 ppm. Experimental results showed that when the concentration is above the optimum’s one (100 ppm), Rct and inhibitor efficiency value would be on a constant value, which each value is 503 Ω and 40.76%. Plot of impedance vs frequency which showed by Bode Modulus curve support the previous data analysis, that the impedance value on 100 ppm had the highest impedance, at the low and high frequency, which has almost 400 Ω at low frequency and 15 Ω at high frequency."