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Related Concept Videos

Color Vision01:24

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Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
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Pseudo-random arranged color filter array for controlling moiré patterns in display.

Yangui Zhou, Hang Fan, Sengzhong An

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    A novel pseudo-random color filter array effectively reduces moiré patterns in optical display systems. This innovation enhances display quality for complex systems, including autostereoscopic displays.

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    Area of Science:

    • Optics and Photonics
    • Display Technology
    • Materials Science

    Background:

    • Moiré patterns degrade optical display quality when structured layers are superimposed.
    • Existing display systems are susceptible to moiré interference.

    Purpose of the Study:

    • To introduce a novel pseudo-random arranged color filter array (CFA) to mitigate moiré patterns.
    • To demonstrate the effectiveness of the proposed CFA in reducing moiré in display systems.

    Main Methods:

    • Design and implementation of a pseudo-random arranged CFA with an optimal arrangement.
    • Experimental testing of the novel CFA within a display system.

    Main Results:

    • Significant reduction in moiré pattern appearance was observed.
    • The proposed CFA effectively suppressed moiré interference in the display system.

    Conclusions:

    • The novel pseudo-random CFA offers a viable solution for moiré pattern reduction.
    • This functional optical structure has broad implications for advanced display systems, including autostereoscopic and integrated displays.