A MEASURING WEIGHT MODEL OF TIMOR'S BEEF CATTLE BASED ON IMAGE Deddy B. Lasfeto #1 , Markus DaudLetik *2 #1 Electrical Engineering, State Polytechnic of Kupang, Kupang, Indonesia *2 Electrical Engineering, State Polytechnic of Kupang, Kupang, Indonesia #1 deddy_lasfeto@yahoo.co.id, * 2 md_letik@yahoo.com Abstract ---This study uses a digital camera to take pictures of Beef Cattle and do image processing to determine the physical size of the body of Beef cattle that looked. On the input image that captured by the camera will do the process of image segmentation to separate the image of beef cattle from the background and eliminates the other objects in the image that are nuisance. Furthermore, with computer vision made the process of identifying specific points of physical of Cattle that used to determine body weight (computational) of Beef Cattle automatically. Determining the weight of Timor’s Beef cattle based on image, is presented by the physical characteristics of cattle that is looked: the body length and width of the chest of cattle, and compute cattle weight based on conversion formula that standardized and generally recognized. This Image analysis system is able to actualize the value of body length and width of chest from the pixel values shown in the image. The system has built two models namely Manual models and Maximum Expectations models. On manual models, the user can input a defining point of body length and width of chest in the image that appears on the computer system. In the maximum expectation, users no longer need to input these points but this image-based analysis system will do the computation automatically. Keywords : Image Processing, Beef Cattle,Computer Vision, Manual Mode, Maximun expectation I. INTRODUCTION Sale and purchase of cattle between farmers and buyers are often found in Timor Island Indonesia, is still based on rough estimates in determining body weight. Generally agreed price through bargaining is not based on actual body weight. In addition, to the official animal markets, measurement facilities of the weigth of Beef Cattle are not always there. Sales of cattle that are not through weighing in advance may result in damages to the breeder or buyer. Using mechanical weighing scales still have obstacles faced in conducting weighting cattle bodies, Lasfeto, et al (2008) [1] , that are: - Keep proper calibration of measuring instruments in order to know the actual weight of cattle; - When cattle forced to climb the scales then stress conditions can also affect to cattle, besides cattle is not in a fixed position and always moving can affect the reading of the actual value in the designation of measuring instruments; - Need to steer cattle to climb the scales are provided, it also requires a sizeable human assistance; - Measure the weight of cattle which is done mechanically, which generally results in cattle experienced stress, can lose weight of cattle (± 2%), in addition to other factors, such as the possibility of injuries due to friction barrier enclosure. To get a more practical and more economical, Electrical and Information Technology can be applied to provide solutions to these problems, by using image processing to determine the physical size of the body of the Beef cattle that looks and its weight. This study aims to find another way instead of mechanical scales to measure the weight of Beef cattle. Specific targets are expected to be achieved has information technology products more efficiently and economically effective (in terms of: time, cost, and manpower) used the society, especially farmers on Timor island to measure the weight of Beef Cattle. II. LITERATURE REVIEW AND HYPOTHESIS A. Literature Review Some research in the field of animal husbandry, especially in breeding beef cattle, theorized that the determination of body weight of beef cattle can be done by measuring the chest circumference and body length of the animal. Between body length, chest circumference and body weight of cattle has a linear relationship (McNitt, 1983) [2] . According to Soenarjo (1988) [3] , the chest circumference and body weight of cattle there is a ISSN (Print) : 2319-8613 ISSN (Online) : 0975-4024 Deddy B. Lasfeto et al. / International Journal of Engineering and Technology (IJET) DOI: 10.21817/ijet/2017/v9i2/170902089 Vol 9 No 2 Apr-May 2017 677