"Design a comprehensive computer vision system for retail analytics, incorporating advanced object detection, tracking, and data analysis functionalities. Provide a detailed, step-by-step technical guide, including diagrams and examples, tailored for advanced users. Ensure the explanation reflects a sophisticated understanding of the subject matter,** covering considerations such as:** ## 1.** System Architecture:** Outline the overall system design, including hardware and software components. ## 2.** Object Detection:** Explain the chosen detection algorithm and its implementation, including any necessary pre-processing steps. ## 3.** Object Tracking:** Describe the tracking methodology, including how to handle occlusions and varying lighting conditions. ## 4.** Data Analysis:** Discuss how to integrate the detected and tracked data into actionable retail analytics, including metrics and visualizations. ## 5.** Technical Considerations:** Address potential challenges, such as data privacy, system scalability, and integration with existing retail systems. Clearly articulate the thought process and technical rationale behind each design decision, using technical terminology and concepts relevant to advanced users."