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High spectral imaging system for breast preset electrical level-raised square wave frequency coding

A hyperspectral imaging and wave frequency technology, applied in the field of imaging systems, can solve the problems affecting the overall signal-to-noise ratio of the image and the low signal-to-noise ratio of digital signals, and achieve high-precision imaging with improved signal-to-noise ratio, improved quality, and large information. Effect

Inactive Publication Date: 2017-03-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, when a pure square wave is used as the excitation signal, the signal-to-noise ratio of the digital signal obtained in the low-level part of the square wave is very low, which affects the overall signal-to-noise ratio of the image.

Method used

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  • High spectral imaging system for breast preset electrical level-raised square wave frequency coding
  • High spectral imaging system for breast preset electrical level-raised square wave frequency coding
  • High spectral imaging system for breast preset electrical level-raised square wave frequency coding

Examples

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Effect test

Embodiment 1

[0026] A hyperspectral imaging system applied to breast elevation preset level square wave frequency encoding, see figure 1 and figure 2 , The imaging system includes: a group of n monochromatic light sources 1 (indicated by LD, the wavelength of the monochromatic light source is between 600-1200nm, this wavelength band is an "optical window", and the penetration depth is relatively deep) and a camera 4 .

[0027] Wherein, the specific value of n is related to the sensitivity of the breast tissue sample 3 to different wavelengths, which is not limited in this embodiment of the present invention. A group of monochromatic light sources 1 are distributed on one side of the breast tissue sample 3, and a camera 4 is distributed on the other side of the breast tissue sample 3;

[0028] Wherein, each monochromatic light source LD in a group of monochromatic light sources 1 1 …LD n Arranged in a linear manner, the lens 2 is used to gather a beam of light to form a linear light sou...

Embodiment 2

[0056] A hyperspectral imaging system applied to breast elevation preset level square wave frequency encoding, see figure 1 and figure 2 , this embodiment uses a laser diode as a monochromatic light source LD 1 …LD n Take this as an example.

[0057] Each laser diode LD in a group of monochromatic light sources 1 is respectively driven by a square wave with different frequencies and a ratio of 2 times to raise the preset level i , each pixel in the camera 4 receives each laser diode LD i Monochromatic Light Combination I Through Breast Tissue Sample 3 ij ; Combination of monochromatic light I by computer ij Separation can obtain monochromatic light combination I ij Each laser diode LD in the i Based on the contribution of the breast tissue sample 3, transmission hyperspectral imaging can be performed.

[0058] The computer processing steps in this embodiment are the same as those in Embodiment 1, and will not be repeated here in this embodiment.

[0059] In the embod...

Embodiment 3

[0062] A hyperspectral imaging system applied to breast elevation preset level square wave frequency encoding, see figure 1 and figure 2 , this embodiment uses a monochromatic diode as a monochromatic light source LD 1 …LD n Take this as an example.

[0063] Each monochromatic diode LD in a group of monochromatic light sources 1 is respectively driven by a square wave with different frequencies and a 2-fold ratio to raise the preset level i , each pixel in the camera 4 receives each monochromatic diode LD i Monochromatic Light Combination I Through Breast Tissue Sample 3 ij ; Combination of monochromatic light I by computer ij Separation can obtain monochromatic light combination I ij Each monochrome diode LD in the i Based on the contribution of the breast tissue sample 3, transmission hyperspectral imaging can be performed.

[0064] The computer processing steps in this embodiment are the same as those in Embodiment 1, and will not be repeated here in this embodimen...

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Abstract

The invention discloses a high spectral imaging system for breast preset electrical level-raised square wave frequency coding. The high spectral imaging system includes driving all the single-color light sources by using preset electrical level-raised square waves with different frequencies, wherein each pixel point of an image received by a camera is a combination of single-color light of each single-color light source penetrating a breast tissue sample. When the camera acquires the image, the noise level does not change, a square signal as a drive is raised in a preset electrical level, the square signal is more obvious in improvement than noise in a low electrical level part of the square signal, the signal to noise ratio of the image acquired by the camera is improved in a low electrical level segment of the square signal, and then the precision of the combination of the single-color light input in a computer can be improved; and the computer can separate the combination of the single-color light so as to acquire a contribution of each single-color light source in the combination of the single-color light, and accordingly, imaging of transmission high spectrogram of the breast tissue sample can be achieved.

Description

technical field [0001] The invention relates to the field of imaging systems, in particular to a hyperspectral imaging system applied to breast elevation preset level square wave frequency coding. Background technique [0002] In the prior art, imaging the interior of objects, especially the interior of the human body, has the outstanding advantages of being non-destructive, non-invasive, and non-radiative through light, but so far there is no mammary gland transmission imaging optical measurement system that can be used at home for frequent tumors The reason for the self-examination is that the existing breast imaging system has high cost, complex operation, and limited precision, which cannot meet the needs of breast self-examination in practical applications. [0003] In order to improve image measurement quality, the patent application in the prior art with the notification number CN 1049203CN1703 A and the announcement date being September 23, 2015 uses square waves as ...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/0075A61B5/0082
Inventor 李刚杨雪林凌
Owner TIANJIN UNIV
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