Preferential flow determination method, apparatus and system based on high definition image

A high-definition image and measurement method technology, applied in the field of soil physics, can solve the problem of poor measurement effect of preferential flow morphology, and achieve the effect of improving the measurement effect

Inactive Publication Date: 2019-02-01
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a method, device and system for measuring preferential flow patterns based on high-de...

Method used

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  • Preferential flow determination method, apparatus and system based on high definition image
  • Preferential flow determination method, apparatus and system based on high definition image
  • Preferential flow determination method, apparatus and system based on high definition image

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Experimental program
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Embodiment 1

[0040] figure 1 It is a flow chart of steps of a high-definition image-based preferential flow morphological determination method provided in the embodiment of the present application.

[0041] refer to figure 1 As shown, the method for determining the preferential flow morphology provided in this embodiment is based on the high-definition image after staining the soil on the soil slope, and specifically includes the following steps:

[0042] S1. Collect high-definition images of the stained soil slope.

[0043] The soil slope here refers to the soil slope formed by the soil to be studied, for example, the cutting surface formed by cutting in the soil layer, on which the preferential flow channel can be formed after the dye seepage. After the soil slope is formed, a high-definition camera or video camera can be used to take pictures of it, so as to obtain a high-definition image of the soil slope.

[0044] In addition, in order to enable the high-definition image to be accu...

Embodiment 2

[0058] Figure 4 It is a structural block diagram of a high-definition image-based preferential flow morphology measurement device provided in the embodiment of the present application.

[0059] refer to Figure 4 As shown, the preferential flow morphology measurement device provided in this embodiment is based on the high-definition image after staining the soil on the soil slope, and specifically includes an image acquisition module 10, a color replacement module 20, a first conversion module 30, and a second conversion module 40 and a statistical calculation module 50 .

[0060] The image acquisition module is used to acquire high-definition images of the stained soil slope.

[0061] The soil slope here refers to the soil slope formed by the soil to be studied, for example, the cutting surface formed by cutting in the soil layer, on which the preferential flow channel can be formed after the dye seepage. After the soil slope is formed, a high-definition camera or video c...

Embodiment 3

[0075] This embodiment provides a high-definition image-based priority stream morphology measurement system, the system includes at least one processor and a memory, the two are connected through a data bus, the memory is used to store computer programs or instructions, and the processor is used to execute the computer program or instructions to enable the Priority Flow Morphometric System to:

[0076] Obtain high-resolution images of stained soil slopes;

[0077] Perform color replacement on the high-definition image, replace the dyed part with black, and replace the undyed part with white, so as to obtain a black and white image;

[0078] Convert the black and white image to a raster file, the raster file includes multiple numbers, and the multiple numbers include three adjacent values;

[0079] Convert the raster file to a text format file, the text format file includes multiple numbers;

[0080] The number in the text format file is counted and proportional operation is ...

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Abstract

Embodiments of the invention provide a preferential flow pattern determination method, apparatus and system based on a high definition image. The method comprises the following steps: capturing the high definition image of a dyed soil slope; performing color replacement on the high definition image, replacing a dyed portion with black, and replacing an undyed portion with white, thereby obtaininga black-and-white image; converting the black-and-white image into a raster file, the raster file comprising a plurality of numbers, and the plurality of numbers comprising three adjacent values; converting the raster file into a text format file, the text format file comprising a plurality of numbers; and counting and proportionally calculating a plurality of numbers in the text format file to obtain a dyeing percentage of the soil slope, wherein the dyeing percentage is used to reflect the preferential flow pattern of the soil slope. Because the three-valued numeralization method is adoptedin the scheme, a processing result of the high definition image is more consistent with an actual preferential flow channel, and the determination effect of the preferential flow pattern is improved.

Description

technical field [0001] The invention relates to the technical field of soil physics, in particular to a high-definition image-based method, device and system for measuring preferential flow patterns. Background technique [0002] Preferential flow refers to the flow channel formed by soil water along preferential flow channels such as large pores, cracks, wormholes, and crop roots, and is a key parameter of soil infiltration and runoff. Dye-tracing method is widely used in the study of macropore preferential flow, and dye-tracing method is based on high-definition image analysis, and the effect of image processing will directly determine the evaluation effect of preferential flow shape. [0003] The current research is only based on "colored - uncolored" binary digitization of "0,1". In the early stage of dyeing, the dyeing agent passes through the preferential flow channel at a fast speed and the flow rate is large, making the dyed channel dark; but as the dyeing time incr...

Claims

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Application Information

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IPC IPC(8): G01N13/04G01N15/08G01M10/00
Inventor 贾仰文龚家国苏辉东牛存稳赵思远姚懿真张灿王建伟
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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