Abstract
Weight is an important parameter in cattle breeding. In determining price of cattle, weight must be known accurately. If the estimation of weight is not accurate, this will cause losses for farmers. On the other hand, traditional farmers don’t have enough money to buy the expensive conventional scale. Even in cattle’s market, more common ranchers estimate cattle's weight only by their feelings. This is not only causes greater potential’s loss, but also does not have a scientific foundation. This study aims to help farmers in estimating cattle's weight. Cattle's weight can be estimated by knowing Within Cow's Breast (WCB) as described in DAHAGA formula discovered by Winoto and friends in 2015. This study aims to implement the DAHAGA formula that has accuracy until 97.9% into an android application. The application runs by using the camera to estimate the object’s height to determine real value of WCB. This calculation is performed using template matching method which compares the real object with image caught on camera. After WCB parameter known, then application will execute DAHAGA formula and issued cattle’s weight as final result. This application is expected to be an easy, inexpensive and accurate solution for farmers in estimating cattle’s weight.Keywords: Cattle, Weight, Android, Camera, Template MatchingAbstrak - Bobot merupakan parameter penting dalam peternakan. Dalam menentukan harga sapi, bobo harus diketahui secara akurat. Apabila perhitungan bobot tidak akurat, maka akan menyebabkan kerugian. Disisi lain, peternak tidak memiliki cukup uang untuk membeli timbangan konvensional. Bahkan di pasar ternak, peternak lebih umum memperkirakan bobot ternak hanya dengan indera. Hal ini bukan hanya menyebabkan potensi kerugian, namun juga tidak memiliki landasan ilmiah. Penelitian ini dilakukan untuk membantu peternak dalam perkiraan bobot ternak. bobot ternak dapat diukur dengan mengetahui besar Dalam Dada (DD). Penelitian ini dilakukan untuk menerapkan rumus DAHAGA yang memiliki akurasi mencapai 97,9% ke dalam sebuah aplikasi android. Aplikasi ini berjalan dengan memanfaatkan kamera untuk memperkirakan tinggi objek untuk menentukan nilai asli dari DD. Perhitungan ini dilakukan dengan memanfaatkan metode template matching yang membandingkan obyek asli dengan citra yang tertangkap kamera. Kemudian aplikasi akan mengeksekusi rumus DAHAGA dan menampilkan bobot sebagai hasil akhir.
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