Abstract
Background subtraction is one of several image segmentation techniques. This technique is used in conditions where the background is boring and static, such as in video surveillance. The codebook model is one of the latest and best techniques utilized for background subtraction. Implementing this technique for robotic soccer vision is a good idea. However, the robotic soccer application needs very fast and robust image pre-processing for image segmentation. We slightly modified the codebook algorithm to get the best performance to be implemented in robotic soccer vision. The result of the experiment shows that the performance of the algorithm becomes better.