Create a high-quality, crisp, and detailed photorealistic image of a park filled with people walking with their children. The season is autumn, but the weather is sunny and pleasant. Some trees have yellow or orange leaves, while the grass remains green. The park should feature various elements such as benches, pathways, and playgrounds, showcasing a lively and vibrant atmosphere. The image should be suitable for use as a desktop wallpaper. Materials like tree bark, grass, and leaves should be textured and realistic, capturing the essence of a beautiful autumn day.