What is single-pixel imaging?
Single-pixel imaging is an emerging paradigm that allows high-quality images to be provided by a device that is only equipped with a single point detector. A common implementation of the single-pixel camera relies on the use of a digital micromirror device, which is a spatial light modulator (see Figure below).
What is a terahertz camera?
Terahertz cameras offer imaging based on terahertz radiation, which can e.g. penetrate clothes. A typical application is in airport security. Other applications are in medical imaging, spectroscopy and astronomy.
How does a single pixel camera work?
A single pixel camera works by reflecting the image off of a digital micromirror device (DMD) through a lens and onto a photodiode. A DMD is an array of microscopic mirrors which can be individually tilted ±15°. However, even at this speed the camera could be used for many non-video applications.
What is a bucket detector?
Finally a bucket detector is utilized to record the correlated lights. In the subsequent reconstruction process, different spectral response signals are decoded by Fourier decomposition, while the spatial information are demodulated by a compressive sensing based reconstruction algorithm.
Is terahertz harmful?
Short yet powerful bursts of terahertz radiation can damage DNA and also increase the production of proteins that help the cells to repair this damage. As a result, low-intensity terahertz pulses are believed to be harmless to living organisms.
What is a single pixel detector?
A single-pixel detector is used to collect that light. Different object types, or classes of data, are then assigned to different wavelengths. An automated all-optical classification process classifies the input images, using the output spectrum detected by a single pixel.
How many pixels make a megapixel?
one million pixels
One megapixel (commonly abbreviated to MP) is one million pixels. Megapixels are a way to measure quantity and have little to do with quality.
What is Ghost imagery?
What Does Ghost Imaging Mean? Ghost imaging is the process of creating data images of the content and configuration of a computer, server or similar device. It is part of the data backup process that enables the creation of replica images or instances of an entire computing device.
What is a quantum ghost?
In the terminology of quantum field theory, a ghost, ghost field, ghost particle, or gauge ghost is an unphysical state in a gauge theory. Ghosts are necessary to keep gauge invariance in theories where the local fields exceed a number of physical degrees of freedom.
Is 6G terahertz?
SEOUL, Aug. 19, 2021 — LG Electronics (LG) successfully demonstrated the transmission and reception of wireless 6G terahertz (THz) data over 100 meters in an outdoor setting.
What is a terahertz spectrometer used for?
Spectroscopic analysis. Terahertz has been used for the spectroscopic characterization of various materials. The sensitivity of terahertz radiation to resonances in different molecules has been exploited for the characterization of various compounds.