A computational imaging method and device based on a folding mask structure

A computational imaging and masking technology, applied in computing, 2D image generation, image enhancement, etc., which can solve the problems of high sampling rate, large memory consumption, and high computational complexity

Active Publication Date: 2018-12-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] In order to overcome the problems of high sampling rate, high computational complexity and large memory consumption in the above-mentioned existing computation...

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  • A computational imaging method and device based on a folding mask structure
  • A computational imaging method and device based on a folding mask structure
  • A computational imaging method and device based on a folding mask structure

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In one embodiment of the present invention, a computational imaging method based on folded mask construction is provided, figure 1 It is a schematic diagram of the overall flow of the computational imaging method based on the folded mask structure provided by the embodiment of the present invention, the method includes: S101, generating a mask sequence by shrinking the symmetrical and symmetrical reversed folds;

[0031] Among them, the mask is a matrix composed of 0 and 1. Assuming that the pixel size of the target object to be imaged is p×q, where p and q are both even numbers, the size of each mask is also p×q. Let the initial mask, ie the first mask, be a sing...

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Abstract

The invention provides a computational imaging method and device based on a folding mask structure. The method comprises the following steps: generating a mask sequence by reducing symmetry and symmetry reverse folding; according to the number of connected regions in each mask of the mask sequence, performing abnormal correction on the mask sequence to obtain an optimal mask sequence; selecting apreset number of masks from the optimal mask sequence for complementary difference measurement and image reconstruction. According to the contribution degree of the mask to the reconstruction qualityof the object to be imaged, a mask sequence is constructed by using a mask reducing symmetry and symmetry reverse fold, and the abnormal order of the mask is corrected according to the increasing order of the number of the connected regions of the mask so that the probability of emergence of masks with the same number of connected regions is reduced and the uncertainty of masks is reduced; the mask structure is optimized, and the optimized mask sequence is used for image reconstruction, which improves the quality and efficiency of image reconstruction; and the method has the advantages of supersampling, supersensitivity, low sampling dimension, high speed and real-time.

Description

technical field [0001] The invention belongs to the technical field of computational imaging, and more particularly relates to a computational imaging method and device based on a folded mask structure. Background technique [0002] Optical imaging is the most common and effective way to collect information. Traditional imaging technologies using array detectors, ie pixelated sensors or point-scan sampling, have developed relatively maturely. However, there are still many limitations in the imaging conditions of extremely weak light and non-visible light. [0003] In recent years, scientists have developed computational imaging technology, which can calculate the reconstructed image of an object by using the coincidence between the measured value and the modulated speckle on a single point detector without spatial resolution, so it is often called "single Pixel imaging", while the point detector measures the sum of light intensities at modulated selected pixels across the ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T11/00
CPCG06T5/001G06T11/00
Inventor 俞文凯
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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