One of the requirements in machine vision applications is that the light source and the environment are selected correctly. If the analyzed object is not properly illuminated, it is inadequate for obtaining the desired result using the captured images. A correct lighting luminaire allows to distinguish the examined object from the environment it interacts with and ensures that its attributes are obtained correctly. In this study an intelligent dynamic lighting system for illumination of a closed area has been developed. The tested luminaire has three arms. Accelerometer readings are used for positioning and orientation. Using the developed system, the positions of the armature can be estimated by bipolar sigmoid technique, according to the point the user wants to illuminate. The system measures the light level with 72 LDR, calibrated with a luxmetre.
ÖZET: Bilgisayarlı görme uygulamaları için aydınlatma ve sahne önemlidir. Nesnelerin özelliklerini belirlemek ve istenilen kalitede görüntü alabilmek, aydınlatma koşullarının olabildiğince sabit ve kontrollü olması ile sağlanır. Çalışmada bilgisayarlı görü uygulamalarında görüntünün dış koşullardan etkilenmemesi için bir ışık havuzu oluşturulmuştur. Sistemindeki LED aydınlatma armatürlerinin sürülmesi, ışık miktarının ve renk yelpazesinin bilgisayar ile kontrol edilmesi sağlanmıştır. Ayrıca iki farklı aydınlatma kaynağı kullanılarak mesafelere göre ışık havuzunun orta noktasına düşen aydınlık düzeyinin hem lüksmetre hem de görüntü işleme teknikleri ile belirlenmiştir.
Anahtar Kelimeler: Bilgisayarlı görme, LED aydınlatma, LED sürücü, ışık havuzu, görüntü
System Design and Control for Computer Vision SystemsABSTRACT: Lighting and environment are important for computer vision applications. It is necessary to determine the properties of the objects and to get the desired quality images. So as to be provided with constant and controlled lighting conditions. In the study, a pool of light was created so that the image was not affected by external conditions in computer vision applications. LED lighting fixtures driver, the amount of light and the color spectrum provided to control the computer in the system. In addition, two different lighting sources were used, and according to the distance of the center of the light pool of the light level was determined by both the luxury meter and the image processing techniques.
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