Water surface target measuring method
A technology of water surface target and measurement method, applied in the field of three-dimensional measurement, can solve the problems of complex measurement method, time-consuming, labor-intensive, unsafe, etc.
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Embodiment 1
[0104] The first step is to configure the equipment for surface target measurement:
[0105] These devices include a video camera 2, a calibration device 1 with leveling, a tripod 3, and a rectangular piece of wood with a length of 1 m and a width of 5 cm; The front of the device 1, after adjusting the angle, shoots the water surface target,
[0106] The above-mentioned calibration device 1 with leveling includes a reference plane 5, a checkerboard 6 and two level rulers 4, a square plastic plate with a specification of 50cm * 50cm is used as the reference plane 5, and a checkerboard 6 and two levels are fixed on it. A horizontal ruler 4, the checkerboard grid 6 is composed of 9×7 black and white squares of 28mm×28mm, placed on the lower right of the middle of the reference plane 5, the length of the two horizontal rulers 4 is 40cm, and the two horizontal rulers 4 They are perpendicular to each other and are respectively fixed on the left side and the top of the reference pla...
Embodiment 2
[0177] This embodiment is to increase the area measurement function of the water surface target in embodiment 1. The specific operation method is: find two points corresponding to the length of the water surface target and two points of the width of the water surface target according to the image, according to the sixth step and the second step in embodiment 1 The seven-step method solves the length and width of the water surface target, and obtains the area of the water surface target=length×width.
Embodiment 3
[0179] This embodiment is to increase the volume measurement function of the water surface target in embodiment 1. The specific operation method is: find two points corresponding to the length of the water surface target and two points corresponding to the width of the water surface target according to the image. For the accuracy of measurement, use two According to the method of the sixth step and the seventh step in embodiment 1, the length and width of the water surface target are solved, and the point representing the height of the target is found from the image, and the method of intersecting two straight lines is used to obtain The vertical point of this point on the water surface, according to the fifth step, the sixth step and the seventh step in the embodiment 1, solves the height of the target, and obtains the volume=length*width*height of the water surface target.
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