基于多视角偏振光谱成像的三维重构装置
By integrating visible light hyperspectral and polarization direction image acquisition into a 3D reconstruction device, the problem of unstable reconstruction in weak texture regions was solved, achieving the integrity and stability of 3D reconstruction. The hardware structure of polarization spectral imaging was optimized by using a motor to drive the stage rotation and optimizing the incident angle of the light source, thus improving the accuracy and consistency of acquisition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN UNIV OF SCI & TECH
- Filing Date
- 2026-06-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing multi-view 3D reconstruction equipment is unstable in areas with weak texture, monochrome or low contrast, and polarization imaging devices have complex mechanical structures, large size, and are difficult to integrate. The synchronous control of polarization acquisition and multi-view acquisition is unstable, resulting in incomplete reconstruction and significant errors.
A three-dimensional reconstruction device based on multi-view polarization spectral imaging is adopted, which integrates the acquisition of visible light hyperspectral images and polarization direction images. The stage is rotated by a motor, and combined with a tunable filter, phase delayer and camera, it realizes the acquisition of multi-angle, multi-wavelength and multi-polarization images. The incident angle of infrared light source and support structure are optimized, and worm gear mechanism and electrical connection components are used to improve the acquisition stability.
It achieves complete reconstruction of weak texture areas, improves the stability of 3D reconstruction and the accuracy of acquired data, reduces errors caused by angle changes, and enhances the reconstruction effect.
Smart Images
Figure CN224519334U_ABST
Abstract
Claims
1. A three-dimensional reconstruction device based on multi-view polarized spectral imaging, characterized in that, The device includes: The storage module includes a motor and a platform (7), wherein the motor drives the platform (7) to rotate; Lighting module: includes a visible light source (5) and an infrared light source (8). The visible light source (5) is located above the storage module and emits light to cover the storage area of the platform (7). The infrared light source (8) is located on the side of the storage module and emits light to cover the storage area of the platform (7). Imaging module: includes a tunable filter (3), a first phase delay unit (41), a second phase delay unit (42) and a camera (1), used to image the area located on the stage (7); the first phase delay unit (41), the second phase delay unit (42) and the tunable filter (3) are arranged in sequence in the imaging optical path between the camera (1) and the stage (7), and the tunable filter (3) is close to the camera (1). The tunable filter (3) is used to achieve filtering of multiple wavelengths. The first phase delay unit (41) and the second phase delay unit (42) are used to adjust the phase delay of light to achieve polarization direction adjustment. The phase delay of the first phase delay unit (41) and the second phase delay unit (42) are different. 2.The multi-view polarization spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The infrared light source (8) is located on the side of the camera (1), and the angle between the axis of its output beam and the imaging optical path of the imaging module is 15°. 3.The multi-view polarization spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The three-dimensional reconstruction device also includes a housing (14). The storage module, lighting module and imaging module are all located inside the housing (14). 4.The multi-view polarization spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The three-dimensional reconstruction device also includes multiple support components, namely a camera support structure (9), a tunable filter support structure (10), a first phase delay optical rotation adjustment frame (111), a second phase delay optical rotation adjustment frame (112), a first phase delay support structure (121), a second phase delay support structure (122), and an infrared light source support frame (13). The camera support structure (9) is used to fix and support the camera (1). The tunable filter support structure (10) is used to fix and support the tunable filter (3). The first phase delayer support structure (121) is used to support and fix the first phase delayer optical rotation adjustment frame (111), and the first phase delayer optical rotation adjustment frame (111) is used to fix and adjust the angle of the first phase delayer (41); The second phase retarder support structure (122) is used to support and fix the second phase retarder optical rotation adjustment frame (112), and the second phase retarder optical rotation adjustment frame (112) is used to fix and adjust the angle of the second phase retarder (42); The infrared light source support frame (13) is an adjustable angle bracket used to fix and support the infrared light source (8). 5.The multi-view polarization spectral imaging based three-dimensional reconstruction apparatus according to claim 4, wherein, The supporting components are manufactured using CNC machining or laser cutting. 6.The multi-view polarized spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The three-dimensional reconstruction device also includes a speed reducer, through which the motor drives the stage (7) to rotate. 7.The multi-view polarized spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The three-dimensional reconstruction device also includes a worm gear mechanism, through which the motor drives the stage (7) to rotate. 8.The multi-view polarization spectral imaging based three-dimensional reconstruction apparatus according to claim 3, wherein, The three-dimensional reconstruction device also includes an electrical connection component, which is fixed on the side wall of the housing (14). The electrical signal connection terminals of the motor, camera (1), visible light source (5), infrared light source (8), tunable filter (3), first phase delay unit (41), and second phase delay unit (42) are connected to the electrical connection component. 9.The multi-view polarized spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The three-dimensional reconstruction device also includes a power supply module and an overcurrent protection component. The power supply module is used to convert the external input power into a low-voltage DC working power supply to provide working power to the motor, camera (1), visible light source (5), infrared light source (8), tunable filter (3), first phase delay unit (41), and second phase delay unit (42). The overcurrent protection component is connected in series at the external power input terminal of the power supply module. 10.The multi-view polarized spectral imaging based three-dimensional reconstruction apparatus according to claim 1, wherein, The rotation step of the stage (7) is 4°, the wavelength of the visible light source (5) is 450nm~720nm, and the infrared light source (8) adopts an infrared narrowband illumination source.