写实 4K 参考图增强

"基于所提供参考图像的超高清 4K 增强。必须完全忠实于原始面部解剖结构、比例和身份。表情、视线、姿态、相机角度、构图和透视需保持零偏差。服装、头发、皮肤和背景元素的结构、位置和设计必须保持不变。以自然真实感恢复细粒度细节。增强毛孔、细纹、发丝、睫毛、织物编织纹理、接缝和材质边缘，不引入任何风格化处理。精确保留原始色彩科学、白平衡和色调关系，与拍摄时一致。光照方向、强度、对比度和阴影行为必须与源图像完全匹配，仅提升清晰度并扩展动态范围。不得重新打光，不得重塑形体。去除所有颗粒。应用受控锐化和高频细节重建。在保留真实纹理的前提下，消除压缩伪影和噪点。不得平滑处理，不得出现塑料感皮肤，不得产生人工光泽。面部特征在整个图像中必须保持一致，解剖结构连贯，边缘清晰稳定。负面约束：不得扭曲，不得面部漂移，不得添加或缺失解剖结构，不得修改手部，不得变形，不得改变透视，不得添加文字或图形，不得幻构细节，不得进行风格化渲染。输出结果必须呈现为真实可信、照片级真实的放大图像，与参考图像完全一致，仅更清晰、更锐利、分辨率更高。"

"Ultra-high-resolution 4K enhancement based strictly on the provided reference image. Absolute fidelity to original facial anatomy, proportions, and identity. Preserve expression, gaze, pose, camera angle, framing, and perspective with zero deviation. Clothing, hair, skin, and background elements must remain unchanged in structure, placement, and design. Recover fine-grain detail with natural realism. Enhance pores, fine lines, hair strands, eyelashes, fabric weave, seams, and material edges without introducing stylization. Maintain original color science, white balance, and tonal relationships exactly as captured. Lighting direction, intensity, contrast, and shadow behavior must match the source image precisely, with only improved clarity and expanded dynamic range. No relighting, no reshaping. Remove any grain. Apply controlled sharpening and high-frequency detail reconstruction. Remove compression artifacts and noise while retaining authentic texture. No smoothing, no plastic skin, no artificial gloss. Facial features must remain consistent across the entire image with coherent anatomy and clean, stable edges. Negative constraints: no warping, no facial drift, no added or missing anatomy, no altered hands, no distortions, no perspective shift, no text or graphics, no hallucinated detail, no stylized rendering. Output must read as a true-to-life, photorealistic upscale that matches the reference exactly, only clearer, sharper, and higher resolution."