A system and method for automatic measurement of forest volume based on depth sensor

Abstract

The invention relates to a timber volume automatic scaling system based on a depth sensor, which comprises an embedded processing module, and a camera module, an optical calibration module, a mobile phone communication module, a built-in file module, a liquid crystal display screen and an input keyboard connected with the embedded processing module. Thus, the timber volume calculation precision can be effectively improved.

Description

technical field [0001] The invention relates to the field of forest volume detection, in particular to a depth sensor-based automatic forest volume detection system and method. Background technique [0002] At present, most of the timber volume inspections used in my country rely on manual work, which has disadvantages such as low efficiency, high labor intensity, and large error in measuring rulers; The phenomenon of "less driving and more luck" in code slips. Although some wood measuring instruments have appeared, they have not yet been commercialized on a large scale, indicating that most of the wood measuring devices have complex operations, involve many hardware devices, image signal calibration, and image data processing. It is obviously not in line with the actual situation that the scale inspectors are required to have high professional knowledge. For example, Li Bohao, Yin Xiaoping, Niu Jingfei and others from Changshu Import and Export Inspection and Quarantine Bu...

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Problems solved by technology

[0002] At present, most of the timber volume inspections used in my country rely on manual work, which has disadvantages such as low efficiency, high labor intensity, and large error in measuring rulers; The phenomenon of "less driving and more luck" in code slips

Although some wood measuring instruments have appeared, they have not yet been commercialized on a large scale, indicating that most of the wood measuring devices have complex operations, involve many hardware devices, image signal calibration, and image data processing. Requires rulers to have high professional knowledge, which is obviously not in line with the actual situation

For example, Li Bohao, Yin Xiaoping, Niu Jingfei and others from Changshu Import and Export Inspection and Quarantine Bureau developed and designed a portable wood automatic ruler measuring instrument. Their paper described the length and short diameter detection of wood end faces based on computer vision processing, but did not consider the complex situation. The end face of the wood, and the experimental results are limited to the wood factory, so the reliability is not great. On the other hand, the supervision of the test results and the differences in the detection of different woods are not considered, and the work efficiency of the wood rulers is still very low.

In addition, An Zhen and Fan Junxiong from the School of Material Science and Art Design of Inner Mongolia Agricultural University have developed and designed a paper on the automatic ruler detector for wood. Judging from the results of recognizing the profile image of the end face of the wood, the recognition accuracy is not high. This is because The color camera only obtains the 2D information of the end face of the wood. The actual wood inspection scale environment is complex. The end face of the wood and the background are often similar and are interfered by the mud and dirt of the wood itself. Therefore, it is only segmented from the color image. Or the contour of the end face cannot be accurately segmented using the depth image

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