Judul: Identifikasi Karakter Plat nomor Kendaraan Menggunakan Ekstraksi Fitur ICZ dan ZCZ Dengan Metode Klasifikasi K-NN
Abstrak: Plat nomor merupakan kode unik yang terdiri dari susunan huruf dan nomor. Setiap kendaraan memiliki satu plat nomor yang dijadikan sebagai kode identitas dari kendaraan itu sendiri. Karena plat nomor bersifat unik sehingga sering digunakan untuk keperluan pencatatan seperti di area parkir. Untuk memudahkan pencatatan plat maka dibuatlah identifikasi karakter plat nomor kendaraan secara otomatis yang menggunakan input berupa gambar plat nomor. Klasifikasi K-NN dan ekstraksi ciri ICZ dan ZCZ digunakan dalam identifikasi karakter. Ekstraksi ciri ICZ dan ZCZ mendapatkan ciri dengan menghitung koordinat centroid dan membagi citra ke dalam n zona yang sama besar kemudian menghitung rata-rata jarak centroid terhadap keseluruhan piksel. Akurasi identifikasi per karakter yang dihasilkan dengan menggunakan zona berjumlah 14 dan ektraksi ciri ICZ adalah 97.00% sedangkan akurasi dengan menggunakan ektraksi ciri ICZ+ZCZ adalah 98.17%. Akurasi indentifikasi per plat nomor kendaraan menggunakan ekstraksi ciri ICZ+ZCZ tanpa toleransi kesalahan adalah72.31% dan 89.23% untuk toleransi kesalahan sebanyak 1
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Identifikasi Karakter Pada Plat Nomor Kendaraan Menggunakan Ekstraksi Fitur ICZ dan ZCZ dengan Metode Klasifikasi K-NN
Abstrak: License plate is a unique code consisting of letters and numbers arrangement. Each vehicle has a license plate that serve as the identity code of the vehicle itself. Since license plates are unique, it often used for recording, such as in the parking area. The character identification characters on the license plates are made automatically using the input in the form of license plate images to facilitate the recording process. K-NN classification and feature extraction ICZ and ZCZ used in the identification of character identification. ICZ and ZCZ feature extraction obtain features by computing the character centroids and divide the image into n equal zones then computing the average distance from the character centroid to every pixel in the image. The character identification accuracy using 14 zones and ICZ are 97.00% while using ICZ+ZCZ feature extraction are 98.17%. The license plate identification accuracy using feature extraction plates ICZ+ZCZ are 72.31% for zero tolerance and 89.23% for one fault tolerance.
Keyword: 

Judul: Macroalgae development as feeding stimulants for the adult sea urchin (Tripneustes gratilla Linnaeus 1758)
Abstrak: Development of artificial feed for somatic growth and gonad quality is one of the focus of research on sea urchin aquaculture activities. Palatability is important factor when developing artificial feed for aquaculture diets. This study investigated the effects of macroalgae (Sargassum polycystum, Gracilaria lichenoides, and Ulva reticulata) as feeding stimulants to artificial diets consumption and gonad profile for the adult sea urchin Tripneustes gratilla, by three feeding trials. Previously starved T. gratilla were held in replicated (3X) 50 L aquaria with recirculation water system (in the first feeding trial) and flow through water system (in the second and third feeding trial). In the first feeding trial, preference of T. gratilla for dried macroalgae was assessed in choice feeding experiment. T. gratilla displayed significant preference for the agar containing dried U. reticulata at 20% agar weight over nine other diets treatment when they were offered simultaneously. Total protein, energy and the ratio of protein to energy in the dried macroalgae had no correlation on agar consumption by T. gratilla. Three artificial diets were made by incorporating one of each of these dried macroalgae at 5% feed weight used in the second feeding trial. Although no significant difference in artificial diets containing dried macroalgae, urchins fed diets containing dried macroalgae consumed more than basal diet when they were offered as single diet. These results indicate that dried macroalgae added to the artificial diets act as feeding stimulants and increasing the acceptability of artificial sea urchin diets. The third feeding trial used dried U. reticulata as feeding stimulant to artificial diet. Data suggest that artificial diet containing 10% dried U. reticulata boosting feed consumption and significantly increasing nutrient accumulation, gonad index, egg diameter and fix gonad color.
Keyword: