Method for measuring bubbles in water body

A technology of air bubbles and water bodies, applied in image data processing, instruments, calculations, etc., can solve problems such as inaccurate particle size calculation results, and achieve the effects of good real-time performance, high precision, and improved precision

Active Publication Date: 2016-10-12
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

However, affected by external factors such as gravity and seawater tension, the bubble contours extracted from the bubble image may not be completely regular spheres. If the irregular bubble contours are simply calculated according to the particle size calculation method of spherical bubbles Ca

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  • Method for measuring bubbles in water body
  • Method for measuring bubbles in water body
  • Method for measuring bubbles in water body

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] see figure 1 As shown, the bubble measurement method of this embodiment mainly includes a bubble image recognition process S101, a non-spherical bubble equivalent particle size conversion process S102, and a bubble particle size inversion calculation process S103. which, combined with figure 2 As shown, in order to accurately distinguish the air bubbles from the suspended solids in the water body to be tested to obtain an accurate air bubble profile, this embodiment first adopts the bubble modeling method in the bubble image recognition process, as in step S201, using the existing The known bubble image samples are used to generate a bubble library and stored as a template; secondly, the contour recognition method is used, such as step S202, to perform in-situ sampling of the water body to be tested to obtain the image of the bubble s...

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Abstract

The invention discloses a method for measuring bubbles in a water body. The method comprises a bubble image identification process, a non-spherical bubble equivalent particle size conversion process and a bubble particle size inversion calculation process. By use of the bubble image identification process, bubble images and suspension images in the water body can be accurately distinguished from each other, and accurate bubble contours are obtained. By use of the non-spherical bubble equivalent particle size conversion process, errors in an equivalent conversion process can be reduced, and the calculation precision of equivalent spherical bubble particle sizes is improved. By use of the bubble particle size inversion calculation process, physical dimensions of bubble particle sizes are generated through combination of image calibration and inversion calculation. The precision is high, the real-time performance is good, original-position real-time measurement of physical parameters of the bubbles can be realized, and the method is suitable for wide application in such fields as scientific research, teaching, seawater monitoring and the like.

Description

technical field [0001] The invention belongs to the technical field of water sample detection, and in particular relates to a technology for collecting, identifying and calculating particle size parameters of air bubbles dissolved in a water body. Background technique [0002] Bubbles and the ocean are interdependent and inseparable. It plays a pivotal role in ocean remote sensing, ocean acoustics, ocean dynamics, ocean chemistry, marine biology, and marine meteorology, and affects the evolution of many ocean physical processes, such as sea-air exchange, sea surface aerosol formation, Microsurface particle enrichment on the sea surface and evolution of ocean currents, etc. [0003] Existing bubble analysis techniques can be roughly divided into two categories: acoustic and optical. The acoustic method measures the attenuation of the acoustic signal by the bubbles or the change of the sound velocity, and uses the relationship between the acoustic data and the particle size ...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/60
CPCG06T2207/10004
Inventor 张浩杨倩吴承璇曲君乐安泉吕斌陈光源祁国梁贺海靖王秀芬雷卓刘杰董磊
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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