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为了解决当环境亮度较暗时平板显示器(FPD)表现低灰度图像信息不够细腻的问题,提出了基于韦伯定律的动态非线性变换算法,构建了基于韦伯定律的动态非线性变换算法模型,给出了算法的实现步骤。把该算法应用在分辨率为640×480的LED显示屏上,在亮度为30 nit的实验室中设置了一组实验,用来验证该算法。实验结果表明,当环境亮度为30 nit时采用动态非线性变换,人眼能识别的最小灰度比采用查表法非线性变换时的最小灰度低2级。
In order to solve the problem that the FPD display is not delicate enough when the ambient light is dark, a dynamic nonlinear transformation algorithm based on Weber’s law is proposed, and a dynamic non-linear transformation algorithm model based on Weber’s law Out of the algorithm implementation steps. The algorithm was applied to a LED display with a resolution of 640 × 480 and a set of experiments was set up in a laboratory with a brightness of 30 nit to verify the algorithm. The experimental results show that when the ambient brightness is 30 nit, the minimum nonlinearity can be identified by the human eye, which is 2 orders lower than the minimum grayscale when the look-up table is adopted.