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提出了用归一化灰度线性度误差来评价体全息再现图像的灰度保真度，并在此基础上实验研究了光折变晶体中全息存储的灰度保真度与记录物参光强比的关系，结果与理论预期符合得很好；研究了全息存储过程灰度线性度误差随记录时间演变，表明只要选择适当的记录物参光强比，即使记录时间较短（衍射效率较低）也能获得较高的灰度保真度。
The normalized grayscale linearity error is proposed to evaluate the grayscale fidelity of volume holographic reconstructed image. On the basis of this, the relationship between the grayscale fidelity of holographic storage in photorefractive crystal The results are in good agreement with the theoretical predictions. The error of linearity of grayscale in holographic storage evolves with the recording time, which shows that as long as the appropriate ratio of light intensity to light intensity is recorded, even if the recording time is shorter Low) can also get higher gray fidelity.