Abstract Among the techniques developed to enhance the resolution of a projector beyond its native resolution, a number of techniques use sequential superimposition of low resolution images with sub-pixel shift to produce a resulting high-resolution image on the wall. This work investigates different low-resolution subframe image generation techniques used for this purpose. Along with that, two new subframe generation techniques have been developed with the aim to prioritize darker and/or bright pixels in an image. We have also extended a Single-subframe iterative technique to Two-subframe iterative technique to evaluate its full potential. Detailed simulations, visual image quality analysis, image quality metric assessment and measurement results of the existing and the newly developed methods have been carried out. A comparative study of the techniques suggests that iterative subframe generation techniques give the best overall image quality, but their high computational cost could make them less practical.

中文翻译：

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用于提高投影仪分辨率的叠加技术的比较研究：模拟与实验

摘要 在为将投影仪的分辨率提高到超出其原始分辨率而开发的技术中，许多技术使用具有亚像素偏移的低分辨率图像的顺序叠加来在墙上产生高分辨率图像。这项工作研究了用于此目的的不同低分辨率子帧图像生成技术。除此之外，还开发了两种新的子帧生成技术，旨在优先处理图像中较暗和/或较亮的像素。我们还将单子帧迭代技术扩展到双子帧迭代技术，以评估其全部潜力。对现有和新开发的方法进行了详细的模拟、视觉图像质量分析、图像质量度量评估和测量结果。