Imaging device and three-dimensional fish modeling method based on orthogonal polarization dual-view imaging
An orthogonal polarization and three-dimensional modeling technology, which is applied in the fields of imaging devices and fish body three-dimensional modeling based on orthogonal polarization dual-view imaging, underwater imaging devices and target three-dimensional modeling, can solve the problem of low three-dimensional reconstruction accuracy, large Issues such as noise and wrong samples
Active Publication Date: 2022-06-28
NANJING HYDRAULIC RES INST
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However, a large number of studies have proved that: under water, the increase of data volume will introduce a large number of noise and error samples, which will lead to a significant decrease in the accuracy of 3D reconstruction
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[0018] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.
[0019] like figure 1 As shown, the underwater orthogonal polarization dual-view imaging device includes two sets of polarization imagers, which are used for side-view imaging and top-view imaging respectively. Each set of polarization imagers contains a light source, an imaging sensor, light source and imaging sensor Both are equipped with polarization filters, and the light source band selects the blue-green light band with a light wavelength of 450-570 nanometers. The polarization imager for top...
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The invention discloses an imaging device and a three-dimensional modeling method of a fish body based on orthogonal polarization dual-view imaging. The top view and the side view of the fish body in the orthogonal polarization direction are simultaneously acquired through the imaging device. On this basis, the depth point cloud of the side view of the fish is obtained based on the dark channel depth estimation technology. Using the depth point cloud of the single-side view, combined with the mirror symmetry of the fish body, judge the fish ridge line according to the top view, and then obtain the depth point cloud of the fish body on the opposite side, and integrate the depth point clouds of the fish body on both sides to realize the fish body. Three-dimensional reconstruction. The technology disclosed in the invention can stably and reliably describe the three-dimensional shape and structure of the fish body in the underwater scene.
Description
technical field [0001] The invention relates to an underwater imaging device and a three-dimensional modeling method for a target, in particular to an imaging device and a three-dimensional modeling method for a fish body based on orthogonal polarization dual-view imaging, belonging to the technical field of target detection under the condition of underwater stereo vision . Background technique [0002] The 3D modeling of fish body based on imaging can identify fish species and measure fish body size in a non-contact manner, and provide basic data for fish population investigation, ecological environment and protection of fishery resources. At present, the commonly used 3D modeling methods mainly include binocular stereo vision and three-view methods, etc., which have high requirements for the calibration and calibration of imaging equipment. However, under the influence of the buoyancy of the water body and the surge of waves and currents, the optical calibration and calib...
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IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 周克发杨德玮刘晓杰陈伟陈莹颖
Owner NANJING HYDRAULIC RES INST