CN-224203712-U - Physical supporting platform for calibrating light field camera

Abstract

The application relates to a light field camera calibration physical support platform of a light field camera calibration device, which comprises a bracket for bearing the light field camera and a calibration assembly, wherein the calibration assembly comprises a lifting device arranged right below the light field camera and a calibration piece with an adjustable angle arranged on the lifting device, so as to adjust the angle of the calibration piece and adjust the distance between the light field camera and the calibration piece. According to the application, the light field camera can be arranged on the bracket, the definition of the calibration piece acquired by the light field camera is consistent by adjusting the angle of the calibration piece arranged under the light field camera, and then the distance between the calibration piece and the light field camera is adjusted by the lifting device, so that the light field camera acquires external information in the shooting process to accurately calibrate the light field camera.

Inventors

• ZHAO WENJIN
• ZHANG BAICHUN

Assignees

• 深圳市百旸科技有限公司

Dates

Publication Date

20260505

Application Date

20241114

Claims (6)

1. 1. The light field camera calibration physical support platform is characterized by comprising a bracket for bearing a light field camera and a calibration assembly (3), wherein the calibration assembly (3) comprises a lifting device (3222) arranged right below the light field camera and a calibration piece (31) which is arranged on the lifting device (3222) in an angle adjustable manner so as to adjust the angle of the calibration piece (31) and adjust the distance between the light field camera and the calibration piece (31); The calibration piece (31) is mounted on the lifting device (3222) through an XY-axis pitching device (3221).
2. 2. The physical support platform of claim 1, wherein the light field camera is movably disposed to the stand in a vertical direction.
3. 3. The physical support platform according to claim 2, wherein the stand comprises a base (11) and a support portion comprising a pillar (121) mounted to the base (11) and extending vertically upwards and a support stand (122) located above the pillar and extending in a horizontal direction, the light field camera being mounted to the support stand (122).
4. 4. A physical support platform according to claim 3, wherein the light field camera is mounted to the support table (122) by a slide mechanism (22).
5. 5. The physical support platform according to claim 1, characterized in that a light source (321) is arranged below the calibration piece (31) emitting light towards the light field camera, wherein the light emitting area of the light source (321) is larger than the calibration piece (31).
6. 6. A physical support platform according to claim 1, characterized in that the surface of the calibration element (31) has a checkerboard or circular grid structure.

Description

Physical supporting platform for calibrating light field camera Technical Field The application relates to the technical field of light field imaging, in particular to a light field camera calibration physical support platform. Background With the tremendous development of the field of computer science under the support of high-precision technology, the light field imaging technology is very widely applied. There are many different implementations of light field imaging systems including camera arrays, microlens arrays, masks, objective lens arrays, and the like. Among them, the microlens array light field camera is most cost effective and thus widely used in academic research and commercial fields. And the micro-lens array is utilized to carry out defocusing or secondary imaging on the image of the main lens by the light field camera based on the micro-lens array, so that the light angle information coding is realized. How to accurately calibrate the light field camera, thereby realizing the decoding of the light field camera, is the basis of a plurality of applications of the light field camera. The accuracy and stability of calibration directly affect the subsequent application. Because of manufacturing and assembling errors, especially defects, of the microlens array in the production process, obvious deviation is caused to the imaging result. Therefore, how to achieve the purpose that the light field camera obtains external information in the shooting process, so that the light field camera is accurately calibrated becomes a technical problem to be solved by the application. Disclosure of utility model The application provides a physical supporting platform for calibrating a light field camera so as to solve the problems. According to the application, a physical support platform for calibrating a light field camera is provided, the physical support platform comprises a bracket and a calibration assembly, wherein the bracket is used for bearing the light field camera, the calibration assembly comprises a lifting device arranged right below the light field camera and a calibration piece which is arranged on the lifting device in an angle adjustable manner, so as to adjust the angle of the calibration piece and adjust the distance between the light field camera and the calibration piece. Preferably, the calibration member is mounted to the lifting device by an XY axis pitching device. Preferably, the light field camera is movably arranged on the bracket along the vertical direction. Preferably, the stand includes a base and a support portion including a pillar mounted to the base and extending vertically upward, and a support stand positioned above the pillar and extending in a horizontal direction, and the light field camera is mounted to the support stand. Preferably, the light field camera is mounted on the supporting table through a sliding table mechanism. Preferably, a light source emitting light towards the light field camera is arranged below the calibration piece, wherein the light emitting area of the light source is larger than the calibration piece. Preferably, the surface of the calibration element has a checkerboard or circular grid structure. According to the application, the light field camera can be arranged on the bracket, the definition of the calibration piece acquired by the light field camera is consistent by adjusting the angle of the calibration piece arranged under the light field camera, and then the distance between the calibration piece and the light field camera is adjusted by the lifting device, so that the light field camera acquires external information in the shooting process to accurately calibrate the light field camera. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model. In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort. One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated. Fig. 1 is a schematic diagram of a light field camera according to an embodiment of the present application. Detailed Description In order to more clearly illustrate the specific embodiments, technical solutions and advantages thereof, the technical solutions will be explained in detail herein with reference to the accompanying drawings. It should be noted that the embod