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A method and device for obtaining three-dimensional hyperspectral information

A technology of hyperspectral and hyperspectral images, which is applied in the field of obtaining three-dimensional hyperspectral information, can solve problems that need to be further improved, and achieve the effect of overcoming the fusion of three-dimensional models of different bands, high resolution and accuracy, and improving resolution and accuracy.

Active Publication Date: 2020-04-14
ZHEJIANG UNIV
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  • Description
  • Claims
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Problems solved by technology

[0006] However, the imaging resolution and accuracy of the hyperspectral 3D model technology in the existing technology needs to be further improved.

Method used

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  • A method and device for obtaining three-dimensional hyperspectral information
  • A method and device for obtaining three-dimensional hyperspectral information
  • A method and device for obtaining three-dimensional hyperspectral information

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Embodiment Construction

[0054] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] Such as figure 1 As shown, this embodiment takes plants as an example for illustration, and the device for obtaining three-dimensional hyperspectral information of plants in this embodiment includes a mechanical motion system and an image acquisition system.

[0056] The mechanical motion system includes: a mobile platform 10 , a lifting device (z-axis) 11 , a translation device (x-axis) 12 , a through-beam infrared distance measuring sensor 7 and an angle sensor 9 .

[0057] The image acquisition system includes: an RGB industrial camera 1 , a hyperspectral camera 2 , a spectrometer, a device rack 4 and a computer system composed of a display 5 and an industrial computer host 6 .

[0058] According to the size of the plant, the motor-driven translation device (x-axis) 12 is controlled by the industrial computer 6 to move, and the dist...

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Abstract

The invention discloses a method for acquiring three-dimensional hyperspectral information. The method comprises the following steps that (1) a hyperspectral camera and an RGB camera are calibrated; (2) feature point extraction and matching are performed on images which are acquired by the hyperspectral camera and the RGB camera and include an object to be measured, and the feature points approximately meeting the matching condition are eliminated; (3) a three-dimensional model is established; (4) the depth values of the feature points under photographing of two cameras are acquired, and the hyperspectral image and the RGB image are matched according to depth value retrieval; and (5) the hyperspectral image of the required band is selected, matching of the hyperspectral image data is realized according to the step (4) and presented in the obtained three-dimensional model according to grayscale information of each point of the hyperspectral image of the selected band. The invention also discloses a device for acquiring the three-dimensional hyperspectral information. The method and the device have high resolution and precision and overcome the problem of fusion of the three-dimensional models of different bands in case of directly applying the hyperspectral image to perform three-dimensional reconstruction.

Description

technical field [0001] The invention relates to the field of hyperspectral imaging technology and three-dimensional reconstruction technology, in particular to a method and device for acquiring three-dimensional hyperspectral information. Background technique [0002] With the development of science and technology and the continuous deepening of people's cognition of things, the research of modern agricultural development needs more and more information. However, due to the polymorphism and complexity of plants, the two-dimensional images of plants taken by traditional methods can no longer meet the needs of research. Obtaining a large amount of plant spectral information dynamically through hyperspectral imaging technology and visually presenting the 3D model of plants through 3D reconstruction technology have become more and more research hotspots. [0003] Among them, hyperspectral imaging technology is currently applied in the fields of agricultural remote sensing ident...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/33G06T3/40G06T7/80G06T17/00
CPCG06T3/4007G06T7/33G06T7/80G06T17/00G06T2207/10036G06T2207/30188
Inventor 岑海燕麻志宏何勇翁海勇姚洁妮徐海霞
Owner ZHEJIANG UNIV
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