{ "image_type": "人像摄影", "resolution_target": "8K UHD 超高清", "aspect_ratio": "竖屏比例", "frame_composition": { "crop": "胸部以上半身像", "orientation": "纵向构图", "subject_position": "居中构图", "camera_angle": "平视视角", "perspective": "正面视角" } }