Autofocusing of Fresnel zone aperture lensless imaging for QR code recognition.
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DOI: 10.1364/oe.489157
Abstract: Fresnel zone aperture (FZA) lensless imaging encodes the incident light into a hologram-like pattern, so that the scene image can be numerically focused at a long imaging range by the back propagation method. However, the… read more here.
Keywords: recognition; fresnel zone; zone aperture; lensless ... See more keywords