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Three-dimensional raindrop spectrometer based on light field camera shooting technology and operation process and application thereof

A light field camera, raindrop spectrometer technology, applied in scientific instruments, particle and sedimentation analysis, measurement devices, etc., can solve the problems of short service life, poor measurement accuracy, high occlusion rate, and achieve fast and accurate light field sampling. The effect of high precision and improved detection accuracy

Pending Publication Date: 2021-12-17
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional one-dimensional laser raindrop spectrometer has a high occlusion rate and poor measurement accuracy. Although the two-dimensional raindrop spectrometer 2DVD has high detection accuracy, it is very expensive and has a very high sensitivity. Short, poor durability, difficult to maintain

Method used

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  • Three-dimensional raindrop spectrometer based on light field camera shooting technology and operation process and application thereof
  • Three-dimensional raindrop spectrometer based on light field camera shooting technology and operation process and application thereof
  • Three-dimensional raindrop spectrometer based on light field camera shooting technology and operation process and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A three-dimensional raindrop spectrometer based on light field camera technology, such as figure 1 As shown, there are two sets of light field detection systems with the same structure. The light field detection system includes a light source system 10, two light shields 20, a light field sampling area 30, a light field sampling area housing 40, and a light field receiving and processing system. 50; one end of the two light shields 20 is respectively installed on the opposite sides of the housing 40 of the light field sampling area to prevent external stray light from entering the light field receiving and processing system 50 from the light field sampling area 30 The light source system 10 and the light field receiving and processing system 50 are respectively installed at the other end of the two light shields 20, the light source system 10 provides stable luminous flux for light field detection, and the light field receiving and processing system 50 is used to captur...

Embodiment 2

[0078] This embodiment also includes an image analysis and processing system, the image analysis and processing system is connected to the light field camera 502 of the three-dimensional raindrop spectrometer described in Embodiment 1, based on the image analysis and processing system and the three-dimensional raindrop spectrometer described in Embodiment 1 Image analysis and processing methods, such as Figure 6 As shown, the specific steps are as follows:

[0079] (1) The two mutually perpendicular directions in the three-dimensional raindrop spectrometer are respectively marked as X direction and Y direction, and the image analysis and processing system obtains the four-dimensional light field of the light field camera in the X direction and the Y direction, and in the X direction The light field refocusing process is performed separately from the Y direction, and the light field refocusing algorithm is used. The light field refocusing algorithm is shown in the following fo...

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Abstract

The invention discloses a three-dimensional raindrop spectrometer based on a light field camera shooting technology and an operation process and application thereof. The three-dimensional raindrop spectrometer comprises two sets of light field detection systems with identical structures, wherein each light field detection system comprises a light source system, two light shields, a light field sampling area, a light field sampling area shell and a light field receiving and processing system; one ends of the two light shields in one set are respectively arranged at two opposite sides of the light field sampling area shell, the light source system and the light field receiving and processing system are respectively arranged at the other ends of the two light shields, and the light field sampling area is arranged in the light field sampling area shell; and the two sets of light field detection systems are vertically arranged by taking the same light field sampling area as a central point. The three-dimensional raindrop spectrometer has the advantages of being high in precision, low in cost, easy to operate and the like, automatic observation can be achieved, observation can be conducted in the two vertical directions at the same time, and the three-dimensional raindrop spectrometer is high in detection result precision, easy to maintain, not prone to damage and high in stability.

Description

technical field [0001] The invention belongs to the field of atmospheric detection technology and equipment, and relates to light field imaging technology and raindrop spectrum detection technology, in particular to a three-dimensional raindrop spectrometer based on light field imaging technology and its operating technology and application. Background technique [0002] The raindrop spectrometer is an important scientific instrument for studying precipitation phenomena. It requires accurate measurement of the diameter, falling speed and even shape of the precipitation particles during the precipitation process. Raindrops are the end product of the cloud formation process. The study of raindrop spectrum is very valuable for the study of cloud development process, the physical process of precipitation formation, and the mechanism of precipitation formation. The radar quantitative measurement of precipitation and effect inspection are also of great significance. [0003] The...

Claims

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Application Information

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IPC IPC(8): G01N15/10
CPCG01N15/10Y02A90/10
Inventor 郜海阳赵文川寇蕾蕾廖淑君康佳慧
Owner NANJING UNIV OF INFORMATION SCI & TECH