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Apparatus and methods for snapshot spectral imaging

A spectral image and equipment technology, applied in the field of spectral imaging equipment, can solve problems such as difficult to meet

Inactive Publication Date: 2017-10-31
RAMOT AT TEL AVIV UNIV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been found that the RIP conditions corresponding to block Toeplitz matrices are more difficult to satisfy than those corresponding to random matrices in terms of the required sparsity of the signal one wishes to reconstruct

Method used

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  • Apparatus and methods for snapshot spectral imaging
  • Apparatus and methods for snapshot spectral imaging
  • Apparatus and methods for snapshot spectral imaging

Examples

Experimental program
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Embodiment Construction

[0039] SSI device without randomizer

[0040] Figure 1A with 1B One embodiment 100 of a snapshot spectral imaging (SSI) device based on a digital camera with a RIP diffuser is schematically shown. The device 100 can be considered to be optically coupled to a source object ( Figure 1B 106) between the RIP diffuser 104 and the digital camera 102. Camera 102 may include components of a conventional digital camera, such as a lens (not shown), image sensor 108 and digital processor 110 . The digital camera may be any known camera, such as an SLR camera, a video camera, a cell phone camera or a miniaturized camera of the type used in gastroscopes or endoscopes. A "digital video camera" as used herein may include only the basic elements and functionality of the imaging portion required to obtain an image of a source subject on a pixelated image sensor. Thus, a lens / sensor combination coupled to an image processor such as found in a smartphone camera should be considered the ima...

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Abstract

The present invention relates to a device and a method for obtaining multiple spectral images of a source object in a snapshot, including the use of two-dimensional compressed sensing data cube reconstruction (2D CS-SCR) applied to the divergent-diffuse snapshot image. In some embodiments, the snapshot image is obtained through a RIP diffuser. In some embodiments, a randomizer is used to further randomize the divergence-diffuse snapshot images. 2D CS‑SCR consists of applying a 2D framelet transform individually to each array representing the different bands of spectral cube data derived from snapshot images. Applying the 2D small frame transformation individually to each array representing the different bands includes applying a direct and an inverse 2D small frame transformation to each array. In some embodiments, the direct and inverse small frame transformations are included in split Bregman iterations.

Description

[0001] Cross References to Related Applications [0002] This application is related to and claims priority from US Provisional Patent Application No. 61 / 836,218 of the same title, filed June 18, 2013, which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments disclosed herein relate generally to spectral imaging (SI) devices, systems, and methods, and in particular to snapshots (“single shot” using digital cameras and compressed sensing (CS) based spatial-spectral cube reconstruction (SCR) algorithms ) hyperspectral imaging (HSI). Background technique [0004] "Spectral imaging" is generally understood to mean imaging with a limited number of wavelengths (eg, up to 10 wavelengths) within a given wavelength range, such as the visible ("VIS") range or near Infrared ("NIR") range. "Hyperspectral imaging" is generally understood to mean imaging with a greater number of wavelengths within a given wavelength range, for example between 10 and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/02
CPCG01J3/027G01J3/0205G01J3/2823G01J3/36G01J2003/2826
Inventor 迈克尔·格鲁布梅纳赫姆·内森阿米尔·艾沃布驰罗曼·马林斯基瓦列里·哲卢德夫
Owner RAMOT AT TEL AVIV UNIV LTD
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