CN-121985107-A - Multi-view naked eye 3D content generation method simulating off-axis camera

Abstract

The invention discloses a multi-view naked eye 3D content generation method for simulating an off-axis camera, which is characterized in that a plurality of wide-angle cameras are arranged at the same horizontal position, camera parameters are calculated by combining an observation visual angle, a shooting distance and the number of viewpoints, a calibration grid is utilized for distortion correction and picture cutting, and finally multi-view 3D content is generated through real shooting.

Inventors

• TAO YANBO
• WANG XIN
• CHENG BOYUAN
• LI XUETAO

Assignees

• 江淮前沿技术协同创新中心

Dates

Publication Date

20260505

Application Date

20260130

Claims (10)

1. 1. The multi-view naked eye 3D content generation method simulating the off-axis camera is characterized by comprising the following steps of: S1, determining an observation visual angle, a shooting distance, a focusing shooting range and a visual point number, and calculating a camera placement range, an adjacent camera distance, a shooting range and a camera half-field angle; s2, placing a plurality of wide-angle cameras at the same horizontal position according to the calculated positions, wherein parameters are consistent; S3, connecting the camera with the acquisition card to realize synchronous acquisition of pictures; s4, determining a zero plane, placing a calibration grid, and carrying out distortion correction and picture cutting; S5, placing a shooting object in a zero plane range for real shooting, and generating multi-view 3D content.
2. 2. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 1, wherein the formula for calculating the camera placement range is: (1) wherein b is the half range of the camera, In order to observe the viewing angle of the view, Is the shooting distance.
3. 3. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 2, wherein the calculation formula of the adjacent camera distance is: (2) Wherein, the I is the number of views, which is the distance between adjacent cameras.
4. 4. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 3, wherein the calculation formula of the camera shooting range is: (3) Wherein, the A is a camera shooting range, and a is a focus shooting range.
5. 5. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 4, wherein the calculation formula of the half field angle of the camera is: (4) Where α is the half field angle of the camera.
6. 6. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 3, wherein the frame cropping range is: The left clipping range of the picture is as follows: (5) The clipping range on the right side of the picture is as follows: (6) Wherein, the As a result of the counting factor, 。
7. 7. The method for generating multi-view naked eye 3D content simulating an off-axis camera according to claim 1, wherein the frame cropping range is smaller than the shooting range of the camera, and all cropping frame resolutions are identical.
8. 8. The method for generating multi-view naked eye 3D content according to claim 1, wherein the distortion correction comprises: keystone correction and fish-eye distortion correction.
9. 9. An electronic device comprising a memory and a processor, characterized in that the memory is for storing a program for enabling the processor to execute a multi-view naked eye 3D content generating method simulating an off-axis camera according to any one of claims 1 to 8, the processor being configured for executing the program stored in the memory.
10. 10. A storage medium having a computer program stored thereon, which when executed by a processor performs the steps of a multi-view naked eye 3D content generating method according to any one of claims 1 to 8.

Description

Multi-view naked eye 3D content generation method simulating off-axis camera Technical Field The invention belongs to the technical field of stereoscopic vision display, and relates to a multi-view naked eye 3D content generation method for simulating an off-axis camera. Background The off-axis camera array is one of the mainstream technologies for generating current multi-view naked eye 3D content, simulates human eye parallax through off-axis arrangement of a plurality of cameras, acquires multi-angle image information, and restores stereoscopic vision by combining a naked eye 3D display technology. The off-axis arrangement is closer to the human eye convergence characteristics than the parallel optical axis array, which can expand the viewing angle coverage and enhance the depth information. However, the off-axis camera array has the following remarkable problems in practical application that 1) a camera optical axis is required to be precisely directed to a scene center, installation deviation is easy to cause visual angle deviation and edge dislocation to influence natural connection of multi-visual angle pictures, 2) parallax size is determined by camera spacing and off-axis angles, viewing dizziness is easy to be caused when the parallax size is too large, stereoscopic impression is weakened when the parallax size is too small, 3) the off-axis camera is difficult to focus on a zero plane (focal plane) to influence picture definition and content accuracy, 4) the camera array is difficult to adjust, compatibility requirements on shooting scenes and display equipment are high, and application range of the camera array is limited. Therefore, there is a need in the art for a multi-view naked eye 3D content generation method that can not only preserve the off-axis capturing advantage, but also avoid the mechanical and optical defects. Disclosure of Invention The technical scheme of the invention is used for solving the problems of high mechanical installation precision requirement of the off-axis camera array and easy occurrence of visual angle deviation and edge dislocation. The invention solves the technical problems through the following technical scheme: The invention provides a multi-view naked eye 3D content generation method for simulating an off-axis camera, which comprises the following steps of: S1, determining an observation visual angle, a shooting distance, a focusing shooting range and a visual point number, and calculating a camera placement range, an adjacent camera distance, a shooting range and a camera half-field angle; s2, placing a plurality of wide-angle cameras at the same horizontal position according to the calculated positions, wherein parameters are consistent; S3, connecting the camera with the acquisition card to realize synchronous acquisition of pictures; s4, determining a zero plane, placing a calibration grid, and carrying out distortion correction and picture cutting; S5, placing a shooting object in a zero plane range for real shooting, and generating multi-view 3D content. Further, the formula for calculating the camera placement range is: (1) wherein b is the half range of the camera, In order to observe the viewing angle of the view,Is the shooting distance. Further, the calculation formula of the adjacent camera distance is as follows: (2) Wherein, the I is the number of views, which is the distance between adjacent cameras. Further, the calculation formula of the shooting range of the camera is as follows: (3) Wherein, the A is a camera shooting range, and a is a focus shooting range. Further, the calculation formula of the half field angle of the camera is as follows: (4) Where α is the half field angle of the camera. Further, the frame cutting range is: The left clipping range of the picture is as follows: (5) The clipping range on the right side of the picture is as follows: (6) Wherein, the As a result of the counting factor,。 Further, the cutting range of the picture is smaller than the shooting range of the camera, and the cutting picture has consistent resolution. Further, the distortion correction includes, but is not limited to, keystone correction and fish eye distortion correction. The invention also provides an electronic device comprising a memory for storing a program supporting the processor to execute the multi-view naked eye 3D content generating method based on the real-time imaging analog off-axis camera, and a processor configured to execute the program stored in the memory. The invention also provides a storage medium, and a computer program is stored on the storage medium, and the computer program executes the steps of the multi-view naked eye 3D content generation method simulating the off-axis camera when being run by a processor. The beneficial effects of the invention are as follows: The technical scheme of the invention avoids visual angle deviation and edge dislocation by horizontally arranging the cameras and accurately cutting, improv