Abstract :
Palm oil with the Latin name Elaeis Guineensis Jacq is an industrial plant that produces many important needs such as cooking oil, industrial oil, and even for vehicle fuel (biodiesel). The use of processed palm oil products as an important need for daily life explains that the intensity of the production of oil palm fruit bunches must be maintained in order to maintain a balance between the number of needs and the amount of production. One way to maintain the production of oil palm fruit bunches is to protect oil palm plants from attacks by the caterpillar, Setothosea asigna. The cause of caterpillar attacks that occur is the lack of supervision of the caterpillar population that grows and breeds in oil palm plantations. Therefore, if there is no supervision in preventing the proliferation of caterpillars, this can damage oil palm plantations resulting in a lack of production of oil palm fruit bunches. In the development of this research program, digital image processing technology will be used to calculate the population of caterpillars.