To make an analogy, fisheye stitching technology is like tailoring, which can stitch multiple fisheye images into a panoramic image, providing users with a wider field of view and a full range of observation experience. Fisheye stitching technology has important applications in many fields, such as virtual reality(VR), providing users with a richer and more realistic experience.
1. The working principle of fisheye splicing technology
Fisheye lens is an ultra-wide-angle lens with an angle of 180° or more, with a wide field of view, but the image edge is severely distorted. The core of fisheye stitching technology is to correct these distortions and seamlessly stitch multiple images together through image processing and geometric transformation.
In short, the working principle of fisheye stitching technology mainly consists of the following steps:
①Image acquisition. Use a fisheye lens to capture multiple images around a central point, ensuring that there is enough overlap between adjacent images. Pay attention to the consistency of lighting during shooting to facilitate subsequent stitching.
②Distortion correction. Fisheye lenses produce severe barrel distortion, which causes objects at the edge of the image to be stretched and distorted. Before stitching, the image needs to be corrected for distortion to expand the “spherical field of view” into a flat image.
③Feature matching. Use algorithms to detect feature points in images, identify overlapping areas of adjacent images (such as corners and window frames), and align stitching locations.
④Fusion processing. Based on the matched feature points, the geometric transformation relationship between the images is calculated, the transformed images are stitched together, and fused to eliminate seams and lighting differences. Color differences and ghosting at the seams are eliminated to generate a smooth panorama.
Application principle of fisheye stitching technology
2.Application of fisheye stitching technology in virtual reality
In virtual reality, fisheye stitching technology is widely used to create immersive virtual environments, providing users with a more realistic and comprehensive experience. The application of fisheye stitching technology in virtual reality includes but is not limited to the following aspects:
(1)360° immersive experience
Fisheye stitching technology can provide a full range of visual experience, which is crucial for virtual reality applications. By stitching multiple fisheye images into a complete panorama, full-view coverage is achieved, and users can experience a 360-degree panoramic view, enhancing the sense of immersion.
(2)Virtual tourism experience
Through fisheye stitching technology, panoramic images of multiple scenic spots can be stitched together to achieve a virtual tourism experience. Therefore, through virtual reality equipment, users can realize virtual travel in different geographical locations, as if they were actually exploring scenic spots around the world.
For example, the Mogao Grottoes in Dunhuang have established a digital archive through fisheye stitching, and tourists can use VR tours to zoom in on the details of the murals, just like experiencing them on site.
Virtual tourism experience through fisheye stitching technology
(3)Virtual gaming experience
Fisheye cameras can quickly scan real scenes (such as castles and forests) and transform them into game maps after stitching. Therefore, using fisheye stitching technology, game developers can add a larger field of view and a more realistic environment to virtual reality games, create more realistic game scenes, and let players feel immersive gaming experience and enhance immersion.
(4)Education and training
In the field of education and training, fisheye stitching technology can be used to create realistic virtual reality scenes to help students better understand abstract concepts or practical skills.
For example, in the medical field, virtual reality technology can be used to simulate surgical procedures, allowing students to practice in a safe environment. For example, after the endoscopic surgery process is processed by fisheye stitching technology, students can observe the doctor’s operating techniques in 360 degrees and learn in a more intuitive way.
Fisheye stitching technology can also be used for education and training
(5)Virtual performances and shows
Artists and performers can use fisheye stitching technology to perform creative performances and artistic displays in virtual reality, and the audience can participate in the interaction or watch in real time.
(6)Real-time video and 3D fusion
Fisheye stitching technology can also be applied to real-time video and integrated with 3D scenes to provide users with a three-dimensional, intuitive, real-time and realistic dynamic system.
In short, fisheye stitching technology is like the “visual nerve” of virtual reality, which can transform fragmented images into a coherent space-time experience. In the virtual world created by fisheye stitching technology, we may not be able to tell whether we are in the real world or the virtual world.
Final Thoughts:
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Post time: Jun-10-2025
