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Apparatus and method 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: 2016-04-13
RAMOT AT TEL AVIV UNIV LTD
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  • 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 method for snapshot spectral imaging
  • Apparatus and method for snapshot spectral imaging
  • Apparatus and method for snapshot spectral imaging

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Embodiment Construction

[0039] SSI device without randomizer

[0040] Figure 1A and 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 imag...

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Abstract

Apparatus and method for obtaining a plurality of spectral images of a source object in a snapshot using comprising two-dimensional compressed sensing data cube reconstruction (2D CS- SCR) applied to a dispersed-diffused snapshot image. In some embodiments, the snapshot image is obtained through a RIP diffuser. In some embodiments, a randomizer is used to further randomized the dispersed-diffused snapshot image. The 2D CS-SCR includes applying a 2D framelet transform separately to arrays representing different wavebands of spectral cube data derived from the snapshot image. The application of the 2D framelet transform separately to the arrays representing the different wavebands includes application of direct and inverse 2D framelet transforms to the arrays. In some embodiments, the direct and inverse framelet transforms are included in a split Bregman iteration.

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 Applications(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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