For the public, 360-degree videos are more accessible than other VR technologies because they can be viewed on many common devices, including head-mounted display (HMD) VR headsets, computers, and mobile devices, and because of the technology used to create them. Given the rapid change in digital technology, future research can use this knowledge to design and implement 360-degree video studies more effectively.Īn accessible form of virtual reality (VR) technology is 360-degree video. We describe the challenges and lessons learned in designing and implementing a 360-degree video as part of an online experiment focused on inducing empathy among clinicians for understanding patient experience. As a case study on how this technology may be used for health-related information and its effect on health care providers, we created a 360-degree video that portrays the experience of a migraine sufferer to be used as a stimulus in an online study. Increasingly, 360-degree videos are being employed in health marketing because they have the potential to enhance health-related attitudes and behaviors. D.WARP, this dynamic content aware stitching is the first of its kind and is on the forefront of 360 stitching.Due to the accessibility of omnidirectional cameras to record 360-degree videos and the technology to view the videos via mobile phones and other devices, 360-degree videos are being used more frequently to place people in different contexts and convey health-related information. This is all done dynamically and in a time coherent manner which is key for video. Our proprietary D.WARP algorithm transforms these fisheye images into the spherical space, by understanding depth to minimizing visual artifacts coming for viewpoint difference. The resulting files are fisheye representations of the captured scene again from 2 slightly different viewpoints. Since Fusion has two lenses, one on each side, the camera produces two video files, one corresponding to each lens, from 2 slightly different viewpoints. It’s more than just lining up each image, pixel by pixel- this requires several advanced algorithms to account for a number of variations that could disrupt the immersive experience. Introducing D.WARP: While stitching the images together is a complex process, making them appear as an accurate representation of a 360 scene is an even more nuanced operation. Visible stitch lines can interrupt the immersive experience- and that is why our team has labored to create the most advanced stitching technology called D.WARP that not only joins the two image files, it composes them into a seamless, unified whole…and that means an immersive experience. In a high quality, stitched image, that seam is invisible. While you now have one piece of fabric, there is a seam that joins the two together. As the thread brings the two pieces together, you transform the two pieces into one. In order to connect them you must stitch them together. Once you have captured all 360-degrees of a scene, you must now bring the two images together. The combination of that offset and >180 degree field of view makes it possible to create a high quality, immersive spherical image that is seamless. Of course, each lens on Fusion captures >180 degrees in field of view. This orientation of the lenses is more effective if we consider the stitch as a part of the equation. The offset lens design used in Fusion allows the use of the best lenses, which are typically a little longer, while reducing the image disparity between the lenses. While a back-to-back lens orientation would be straight forward, it increases the disparity resulting in stitching issues. The lenses are offset on each side to ensure that, together, all 360 degrees are captured in any given scene. The first key feature of GoPro’s new spherical camera, GoPro Fusion, is its offset lenses. In order to create a seamless 360-degree image, it is essential that the entire space around any given scene is captured.
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