Error diffusion method with optimized weighting coefficients for binary hologram generation

Yang Gao; Jiao Shuming; Liu Jung-Ping; Lei Ting; Yuan Xiaocong

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Error diffusion method with optimized weighting coefficients for binary hologram generation

机译：二元全息图的优化加权系数的误差扩散方法

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The error diffusion method can effectively reduce quality degradation by propagating thresholding errors to neighboring pixels in the conversion of a gray-scale hologram to a binary hologram. In previous works, the four weighting coefficients in error diffusion are mostly set as the Floyd-Steinberg coefficient, which was determined empirically and originally proposed for photograph processing. In this work, we point out that the Floyd-Steinberg coefficients can be suboptimal for hologram error diffusion binarization. Furthermore, the weighting coefficients are optimized for each different hologram adaptively. Compared with conventional coefficients, our optimized coefficients can better preserve the fidelity of a reconstructed image after a hologram is binarized. (C) 2019 Optical Society of America

机译：误差扩散方法可以通过将阈值误差传播到相邻像素来有效地降低质量劣化，在灰度全息图转换为二进制全息图中。在以前的作品中，误差扩散中的四个加权系数大多被设定为弗洛伊德 - Steinberg系数，其经验确定和最初提出用于照片处理。在这项工作中，我们指出了弗洛伊德 - Steinberg系数可以是全息图误差扩散二值化的次优。此外，加权系数适自适应地针对每个不同的全息图进行了优化。与传统系数相比，我们的优化系数可以在全息图二值化之后更好地保留重建图像的保真度。（c）2019年光学学会

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来源
《Applied optics》 |2019年第20期|共9页
作者
Yang Gao; Jiao Shuming; Liu Jung-Ping; Lei Ting; Yuan Xiaocong;
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Shenzhen Univ Wanophoton Res Ctr Shenzhen 518060 Guangdong Peoples R China;

Shenzhen Univ Wanophoton Res Ctr Shenzhen 518060 Guangdong Peoples R China;

Feng Chia Univ Dept Photon Taiwan 40724 Peoples R China;

Shenzhen Univ Wanophoton Res Ctr Shenzhen 518060 Guangdong Peoples R China;

Shenzhen Univ Wanophoton Res Ctr Shenzhen 518060 Guangdong Peoples R China;

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Error diffusion method with optimized weighting coefficients for binary hologram generation

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