Broadband high-resolution terahertz single-pixel imaging
Adam Vallés, Jiahuan He, Seigo Ohno, Takashige Omatsu, Katsuhiko Miyamoto
Abstract
We report a simple single-pixel imaging system with a low mean squared error in the entire terahertz frequency region (3-13 THz) that employs a thin metallic ring with a series of directly perforated random masks and a subpixel mask digitization technique. This imaging system produces high pixel resolution reconstructed images, up to 1200 × 1200 pixels, and imaging area of 32 × 32 mm 2 . It can be extended to develop advanced imaging systems in the near-ultraviolet to terahertz region.
Topics & Concepts
Subpixel renderingTerahertz radiationOpticsMaterials sciencePixelBroadbandMicrowave imagingImage resolutionImage processingMedical imagingResolution (logic)Iterative reconstructionImage qualityPoint spread functionTerahertz spectroscopy and technologySpectral imagingSuperresolutionOptical coherence tomographyDeconvolutionDigital imagingPhysicsPtychographySignal-to-noise ratio (imaging)Phase-contrast imagingTomographic reconstructionImage sensorDigital image processingRefractive indexSignal processingImaging techniqueOptical imagingTransmission (telecommunications)Random lasers and scattering mediaTerahertz technology and applicationsMetamaterials and Metasurfaces Applications