Image-technique-based artificial wetland plant growth information extracting method

A technology for artificial wetlands and plant growth, which is applied in image analysis, image data processing, measurement devices, etc., and can solve the problem of inconsistent imaging reduction ratio

Inactive Publication Date: 2011-04-20
NANKAI UNIV
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AI Technical Summary

Problems solved by technology

A digital camera is used to collect background and reference images of the artificial wetland plants in order to avoid the influence of background variegation on information extraction, and to minimize the impact caused by factors such as shooting distance and focus adjustment during the photographing process. Inconsistent image reduction ratio
2) Image import and contour extraction

Method used

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  • Image-technique-based artificial wetland plant growth information extracting method

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Embodiment Construction

[0015] Image acquisition and image processing are two main points of the present invention. Below, the present invention will be described in more detail by taking the artificial wetland plant image (converted into a BMP bitmap file) collected by the above-mentioned background reference method as an example.

[0016] In the image acquisition part, prepare the background and reference objects as described in the content of the invention above, use a (ordinary) digital camera, select a certain shooting distance, and shoot directly at the plants. Due to the universality of the software, there is no strict requirement on the size of the image, and the image file in JPEG format can be correctly imported into the computer and converted into a 24-bit bitmap format, which can be read into the software for processing.

[0017] There are two types of bitmap formats under the Windows operating system - GDI (Graphics Device Interface, graphics device interface) bitmap and DIB (Device-Indep...

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Abstract

The invention discloses an image-technique-based artificial wetland plant growth and form change information extracting method, which comprises that: wetland plant image files (digital photos) which are acquired periodically are imported into a program and displayed on the screen of a computer, and the program converts a screen coordinate into an actual coordinate; a user acquires the plant profiles (by image edge recognition) and plant size (by plant projection area representation) through software operation for man-machine interaction; and by representing the information on images of the same group relative to a time axis, the growth curve of the plants on the artificial wetland can be drawn. The method has the advantage that by combining a digital imaging principle and adopting a computer image technique, software is designed and developed in a Visual C++ environment to monitor the growth of the plants on the artificial wetland without damaging the plants on the artificial wetland.

Description

technical field [0001] The method and program for extracting the growth and morphological change information of artificial wetland plants based on computer image technology involved in the present invention realize the "non-damaging" monitoring of artificial wetland plants. Background technique [0002] Constructed wetland was produced in the 1950s and developed in the 1970s and 1980s. It is a new type of sewage treatment technology with strong impact load resistance, strong system configuration plasticity, low investment and operation costs, and remarkable ecological benefits. Wetland plants are one of the important components of constructed wetland beds; for the study of plant growth in constructed wetlands, the traditional method is to dig out the whole plant and weigh the dry weight before and after sewage treatment, or cut it into roots, stems and leaves Three-stage measurement of pollutant enrichment. This method cannot monitor the process of plant growth. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01B11/28G06T7/60G06F9/44
Inventor 黄岁樑唐婷芳子
Owner NANKAI UNIV
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