The article shows the design and implementation of an artificial vision system capable to obtain in real time the position of an object (working piece or an end-effector of a robot manipulator) within an enclosed environment like a manufacturing cell using graphical symbols "wall marks" recognition to obtain location. The system comprises a digital camera with pan-tilte movements attached to the object as the non-contact sensor to get its location; the object might be a working piece, the end effector of a robot-arm or any other mobil object subject of a current manufacturing application. The system obtains the location and position of the camera by way of performing an observation around the walls, the system finds "wall marks" which indicates where the object is and which its position.
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