Mohamad Solahudin

Machine Vision-Based Analysis for Black Tea Quality Evaluation

Currently, visual quality evaluation of black tea production depends only on expert labor judgement. This allows biases and inconsistency in the end product caused by unstandardized methods. Therefore, it is proposed that machine vision could be applied in order to standardize the quality evaluation method. The goal of this research is to build a machine vision-based system to classify quality classes of black tea. In this research black tea classes used are class I, class II, and class III without considering the grade for each class. A neural network classifier was used to classify black tea images with seven nodes, one hidden layer. Ten features were used as an input for the classifier, RGB, index RGB, R/G, R/B, magenta, and yellow. From the results, the system achieved an accuracy of 100%. Application of machine vision technology in black tea production could not only support sustainability in agriculture, but also can also be used for precision agriculture in practical fields.

ASPEK LINGKUNGAN DAN PRODUKTIVITAS AYAM BROILER PADA SISTEM TRANSPORTASI TERTUTUP DAN KONVENSIONAL

Population of broiler chicken increase continuously every year. This situation indicated broiler farm in Indonesia has been transformed as a poultry industry. Broiler farm concentrated in one place far from human to anticipate the potency of air pollution. Transportations are used to mobilize broiler from farm to slaughter house or market. The transportation should con- sider the condition of broiler and environment to minimize the air pollution and negative effect in broiler performance. This re- search was aimed to evaluate effect of covered and conventional transportation system on environmental aspect and broiler per- formance. Sixty broilers was used in this research and divided into two treatments. Data was analyzed by t-Test with α 0.05. The result indicated that covered system better to reduce the potency of ammonia pollution than conventional system. Weight loss of broiler transported with covered system significantly lower (P<0.05) than conventional system. There were no mortality both in conventional and covered system. Distribution of temperature in covered system was significantly lower (P<0.05) than conven- tional system. Covered system, poultry transportation system based on animal welfare aspect showed lower in vocalization than conventional system.