{ "task": "写实产品视觉图", "input": { "reference_image": "用户上传图片", "preserve_product_identity": "保持产品特征", "preserve_label_text": "保留标签文字", "preserve_object_shape": "保持物体形状", "preserve_centered_composition": "保持居中构图" }, "scene": { "environment": "高调摄影棚 (high-key studio)", "background": "纯白背景" } }