بررسی مدل های کالیبراسیون لنزهای fisheye جهت تولید تصاویر spherical panorama

Panorama Measurement Based on Spherical Projective Geometry

Previous panoramic studies focused on image stitching and the panoramic camera development. In recent years, people began to focus on panoramic scalability issues, the existed methods adopt traditional photogrammetric methods for data processing based on a multi-directional panorama images, using a large number of control points and combined bundle adjustment. Indeed, panorama itself is a kind ...

Fisheye Lenses Calibration Using Straight-Line Spherical Perspective Projection Constraint

Fisheye lenses are often used to enlarge the field of view (FOV) of a conventional camera. But the images taken with fisheye lenses have severe distortions. This paper proposes a novel calibration method for fisheye lenses using images of space lines in a single fisheye image. Since some fisheye cameras’ FOV are around 180 degrees, the spherical perspective projection model is employed. It is w...

Virtual endoscopy using spherical QuickTime-VR panorama views.

Virtual endoscopy needs some precomputation of the data (segmentation, path finding) before the diagnostic process can take place. We propose a method that precomputes multinode spherical panorama movies using Quick-Time VR. This technique allows almost the same navigation and visualization capabilities as a real endoscopic procedure, a significant reduction of interaction input is achieved and...

Exploring 3d Virtual Environments through Optimised Spherical Panorama Navigation

Commonly, immersive and virtual reality systems simulate real environments exploiting 3D computer graphics. This entails a considerable work to be done in models development and objects textures mapping in order to obtain a good degree of realism. Furthermore, the excessive complexity and the high rendering quality of the models can compromise system performance, especially in a web environment...

Real-Time Spherical Panorama Image Stitching Using OpenCL

This paper presents a webcam-based spherical coordinate conversion system using OpenCL massive parallel computing for panorama video image stitching. With multi-core architecture and its high-bandwidth data transmission rate of memory accesses, modern programmable GPU makes it possible to process multiple video images in parallel for real-time interaction. To get a panorama view of 360 degrees,...

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