Light & Engineering Vol. 23, No. 3, pp. 66-72, 2015 Svetotekhnika No. 4, 2015, pp. 35-40 PROVIDING ENERGY EFFICIENCY IN INTERIOR LIGHTING OF OFFICES AND INDUSTRIAL BUILDINGS USING IMAGE PROCESSING TECHNIQUE Musa Demirbas1, Turker Fedai Cavus2 and Cenk Yavuz2 1Arcelik R&D musa.demirbas@arcelik.com 2Eng. <...> Faculty Electrical and Electronics Eng. Dept., Sakarya University tfcavus@sakarya.edu.tr; cyavuz@sakarya.edu.tr ABSTRACT Energy saving approaches for interior lighting, especially for governmental and nongovernmental offi ces, is signifi cant for every country around the world. <...> As energy sources decrease, greenhouse gas emissions increase. <...> So, lighting energy savings should be considered more seriously. <...> In this study, energy saving potential of an offi ce building is examined by using electrical data collected from the camera integrated automated lighting control system and energy consumption is reduced by an image processing technique accordingly. <...> The goal of this study is to improve the system energy parameters and increase the energy saving potential of the lighting system. <...> Keywords: lighting energy savings, lighting control, lighting quality, image processing technique 1. <...> Therefore, effi cient use of energy and energy-saving has been one of the most current topics in recent years. <...> Effi cient use of electrical energy is very important for the development of the national economy and the reduction of dependence on foreign countries. 66 2. <...> With the developing production technologies and exponential researches on the subject, it is proposed to increase the effi ciency of the energy saving in lighting devices and make them more common. <...> Also, energy saving has become a part of the national and international policies [1]. <...> International organizations such as International Energy Agency (IEA), which was founded in 1974, and Commission Internationale de L’йclairage (CIE), which was founded in 1931 and redoubled its recent worldwide activities in the direction of energy effi ciency in lighting, are in a collective work with communities of countries such as the European Union (EU), United Nations (UN) and Organization of Economic Cooperation and Development (OECD) [2]. <...> The overall objective of these studies is to maximize the effi ciency by limiting <...>