Device, system and method for measuring canopy density of blueberry
A technology of canopy density and tree canopy, which is applied in the field of devices for measuring blueberry canopy density, can solve the problems of high computer image analysis skills, can only be used by professionals, and is expensive, so as to improve the level of refined management and calculation results. Intuitive and cost-effective results
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Embodiment 1
[0049] The present embodiment provides a kind of device of measuring and calculating the canopy density of blueberry tree, comprising: Android mobile phone, selfie stick and fisheye lens; The back side of Android mobile phone is clamped upwards on the selfie stick, adopts bluetooth to connect between described Android mobile phone and selfie stick , the fisheye lens is clamped on the camera on the back of the Android phone, and the selfie stick adjusts its length according to the needs of taking pictures.
Embodiment 2
[0051] The present embodiment provides a system for measuring the canopy density of blueberry trees, including:
[0052] The image acquisition module is used to obtain the fisheye photo and record the sensor value of the smart device at the same time;
[0053] The image rotation module uses three parameters of X, Y, and Z to describe the rotation state of the smart device, where X represents the azimuth of the horizontal rotation of the smart device, and rotates the photo according to the X value recorded when taking pictures;
[0054] The image preprocessing module removes the images of the ground, weeds under blueberry trees and other trees in the fisheye image, and extracts the canopy photos;
[0055] In the fisheye image segmentation module, the combination operator R-G-B is selected as the feature quantity for algebraic operation, and the obtained grayscale image is used as input, and the threshold segmentation is performed using the Otsu maximum inter-class variance meth...
Embodiment 3
[0061] The present embodiment provides a kind of method of measuring and calculating the canopy density of blueberry canopy, specifically comprising:
[0062] S1, to obtain a 180° full-frame fisheye image: select the morning before the sun comes out, with the fisheye lens up, lean over and hold the selfie stick, and extend the mobile phone into a certain height inside the blueberry tree canopy, adjust the mobile phone to make it horizontal, when When the phone prompts with vibration and sound, press the camera button on the selfie stick to take a fisheye photo, and record the value of the phone's orientation sensor at the same time. Fisheye photos should be checked after shooting to ensure the quality of the photos is acceptable.
[0063] S2. Rotate the image: According to the azimuth value of the direction sensor when taking the photo, rotate the photo clockwise. At this time, the photo is up north and down south, left west and right east, which is in line with the user's hab...
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