Optical system and characteristics of an LCD projector with interleaved pixels using four LCD projectors

Takahashi, Yu; Nomura, Tomoyoshi; Sakai, Shigekazu

doi:10.1109/76.350777

Cited by 4 publications

(1 citation statement)

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“…Takahashi et al 1 proposed a setup in 1995 with four liquid crystal display (LCD) projectors projecting on the same screen with an elaborate mirror-setup. By taking advantage of the small fill factor in the LCD pixels, the overlap between the pixels is very low in this case.…”

Section: Related Workmentioning

confidence: 99%

Preferred image quality metric for shifted superimposition-based resolution-enhanced images

et al. 2018

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Shifted superimposition is a resolution-enhancement method that has gained popularity in the projector industry the last couple of years. This method consists of shifting every other projected frame spatially with subpixel precision, and by doing so creating a new pixel grid on the projected surface with smaller effective pixel pitch. There is still an open question of how well this technique performs in comparison with the native resolution, and how high the effective resolution gain really is. To help investigate these questions, we have developed a framework for simulating different superimposition methods over different image contents, and evaluate the result using several image quality metrics (IQMs). We have also performed a subjective experiment with observers who rate the simulated image content, and calculated the correlation between the subjective results and the IQMs. We found that the visual information fidelity metric is the most suitable to evaluate natural superimposed images when subjective match is desired. However, this metric does not detect the distortion in synthetic images. The multiscale structural similarity metric which is based on the analysis of image structure is better at detecting this distortion.

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Section: Related Workmentioning

confidence: 99%

Preferred image quality metric for shifted superimposition-based resolution-enhanced images

et al. 2018

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P‐9.8: Design Method of LCoS Projection System Based on Multiplexing of Imaging and Illumination Optical Paths

Wu,

Wang,

Yang

et al. 2024

Symp Digest of Tech Papers

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In this paper, we deduce and analyze the relationship between the back working distance and the design difficulty of the telecentric and reverse‐telephoto system in detail, and propose an innovative design idea for the LCoS projection system to solve this limitation. By employing optical path multiplexing in the imaging and illumination systems, the back working distance is reduced, leading to improved imaging performance and reduced system volume. Furthermore, a novel illumination system design method utilizing an independent eccentric microlens array is proposed for the new system configuration. This method achieves comparable illuminating quality with fewer elements and a smaller overall size compared to conventional approaches.

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Research on the task schedule algorithm based on the GA

Xu¹,

Li²,

Yu³

2010

null

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Optical system and characteristics of an LCD projector with interleaved pixels using four LCD projectors

Cited by 4 publications

References 0 publications

Preferred image quality metric for shifted superimposition-based resolution-enhanced images

Preferred image quality metric for shifted superimposition-based resolution-enhanced images

P‐9.8: Design Method of LCoS Projection System Based on Multiplexing of Imaging and Illumination Optical Paths

Research on the task schedule algorithm based on the GA

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