Video rate spectral imaging using a coded aperture snapshot spectral imager.

By Ashwin A. Wagadarikar, Nikos P. Pitsianis, Xiaobai Sun, David J. Brady. Optics Express, 2009

348 citations recorded by the source corpus.

We have previously reported on coded aperture snapshot spectral imagers (CASSI) that can capture a full frame spectral image in a snapshot. Here we describe the use of CASSI for spectral imaging of a dynamic scene at video rate. We describe significant advances in the design of the optical system, system calibration procedures and reconstruction method. The new optical system uses a double Amici prism to achieve an in-line, direct view configuration, resulting in a substantial improvement in image quality. We describe NeAREst, an algorithm for estimating the instantaneous three-dimensional spatio-spectral data cube from CASSI's two-dimensional array of encoded and compressed measurements. We utilize CASSI's snapshot ability to demonstrate a spectral image video of multi-colored candles with live flames captured at 30 frames per second.

Subfields: Analytical Chemistry, Biophysics, Radiology, Nuclear Medicine and Imaging

View Paper: https://www.semanticscholar.org/paper/494417a6db9089a63507aa2df4ad3e3d0b0885d1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Analytical Chemistry

1. Xin Yuan
2. David J. Brady
3. Qionghai Dai

In Biophysics

1. Xin Yuan
2. David J. Brady
3. David S. Kittle
4. Hanspeter Pfister
5. Qionghai Dai
6. Luc Van Gool
7. Radu Timofte
8. Yulun Zhang

In Radiology, Nuclear Medicine and Imaging

1. Xin Yuan
2. David J. Brady
3. Qionghai Dai
4. Luc Van Gool

Citations in the corpus

• Generalized alternating projection based total variation minimization for compressive sensing (2015, methodology): “For the hyperspectral image CS, we follow the architecture in the coded aperture snapshot spectral imaging (CASSI) [7, 32], where the formulation is similar to CACTI discussed in Section 4.2.”
• Review of snapshot spectral imaging technologies (2013, neutral): “148 More recent algorithms are much faster.”
• Mask-guided Spectral-wise Transformer for Efficient Hyperspectral Image Reconstruction (2021, background): “Among current existing SCI systems [8, 14, 29, 45, 47, 59], the coded aperture snapshot spectral imaging (CASSI) [33, 45] stands out and forms one promising mainstream research direction.”
• MST++: Multi-stage Spectral-wise Transformer for Efficient Spectral Reconstruction (2022, background): “To address these limitations, researchers have developed SCI systems [18, 26, 50, 71, 72] to capture HSIs, where the 3D HSI cube is compressed into a single 2D measurement [81].”
• Rank Minimization for Snapshot Compressive Imaging (2018, methodology): “ in the algorithmic development (details in Sec.4.3) by using this structure. Most importantly, this structure is inherent in the hardware development of SCI, such as the video CS [5] and spectral CS [11]. 1.1 Motivation Without loss of generality, we use video CS as an example below to describe the”
• Multiframe image estimation for coded aperture snapshot spectral imagers. (2010, methodology): “2 was changed from the original system [6] by increasing the magnification of the aperture code on the detector from two pixels to three pixels, which altered the total dispersion from 33 to 53 pixels, increasing the number of spectral channels.”