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[HTT21-P01] Utilization of Single Content and Applying to Education and Vocational Training, Stereoscopic Viewer for the Geographical Informational Application
Keywords:Stereo vision, Crossing method, Geological map, Hypertext Markup Language, Virtual Reality, Digital Transformation
1. Introduction
The geographic information has been enriched year by year. They are available in Geographical Survey Institute Map Globe (GSI, 2017). SVw (Stereoscopic Viewer) shown in Fig. 1, displays this information. That has facilitated the understanding of geological information which appears on topographic maps and aerial photographs (Ryoki, 2019a). This viewer allows for stereoscopic viewing of a single image of a rotating object (Ryoki, 2019b). This application is being used in higher education and professional development with the advent of DX (Ryoki, 2019c). This paper describes that stereopsis can be achieved even for images other than rotational images, as long as the viewpoint position moves. And, the paper introduces applications for stereoscopic viewing of VR (Virtual Reality) contents provided on You Tube (2022), mp4 videos taken from moving drones which stored on local machines or published on the WWW.
2. Overview of the Stereoscopic Viewer
When viewing a three-dimensional image from both pupil positions, each eye perceives a separate image. The brain performs higher-order processing on both images. These images are recognized as 3D (Tanabe and Fujita, 2004). GSI (2021) gave a full detail of the method for stereoscopic viewing by looking at two images with parallax is described. Ryoki (2019a) pointed out that it is possible to see stereoscopic images by viewing with both eyes respectively, when someone saw two videos of a rotating object, which taken with a single device, staggered in time and played back side-by-side. Then, SVw was released on the World Wide Web (Ryoki, 2021). SVw was written in HTML and JS. It was a viewer that be able to also view stereoscopic images of rotating objects or images for VR provided by You Tube (2022), as shown in Fig. 2.
3. Stereoscopic Viewing of Images Taken by Moving in Any Direction
Ryoki (2019b) stated that a single image which moved or rotated in the horizontal direction could be used on SVw. Also, Ryoki (2020) pointed out that it was possible to view vertically moving images stereoscopically if they were converted to the horizontal direction by a video processing application. However, it is cumbersome to convert a vertically moving image into a horizontally moving one, and it is not practical in educational and other fields. To solve this problem, Ryoki (2022) coded SVd (Stereoscopic Video), an application that rotates the video display of SVw and plays it back as a horizontally moving video (Fig. 3). By adjusting the rotation angle of the playback image, SVd is able to play back an image that was shot in an arbitrary direction as if it were moving horizontally. It is also possible to change the rotation angle during playback. In SVw, files on the local machine could not be viewed due to HTML restrictions, but in SVd, both Web and local files can be used. Although in SVw, files on the local machine could not be viewed due to HTML restrictions, yet in SVd, both Web and local files can be used.
4. Problems of stereopsis using a single image and further prospects for SVw or SVw
Software for creating three-dimensional images of chemical structures, such as VESTA (Momma and Izumi, 2019), may draw individual atoms identically in size. When someone play back the image of a rotating object created by such an application in an ordinary viewer, in spite of they keep watching an image that is originally right-handed, it becomes suddenly appear to be rotating backwards. This misperception is thought to originate from the brain's "wrong impression," similar to the cognitive process of the "optical illusion," which has been a hot topic in recent years. The hollow mask optical illusion introduced by Ito (2021) is one of them. If this video is viewed with SVw or SVd, such optical illusion is hardly observed. Thus, SVw or SVd be able to use not only in the natural sciences for education and training, but also in the humanities, such as psychology.
The geographic information has been enriched year by year. They are available in Geographical Survey Institute Map Globe (GSI, 2017). SVw (Stereoscopic Viewer) shown in Fig. 1, displays this information. That has facilitated the understanding of geological information which appears on topographic maps and aerial photographs (Ryoki, 2019a). This viewer allows for stereoscopic viewing of a single image of a rotating object (Ryoki, 2019b). This application is being used in higher education and professional development with the advent of DX (Ryoki, 2019c). This paper describes that stereopsis can be achieved even for images other than rotational images, as long as the viewpoint position moves. And, the paper introduces applications for stereoscopic viewing of VR (Virtual Reality) contents provided on You Tube (2022), mp4 videos taken from moving drones which stored on local machines or published on the WWW.
2. Overview of the Stereoscopic Viewer
When viewing a three-dimensional image from both pupil positions, each eye perceives a separate image. The brain performs higher-order processing on both images. These images are recognized as 3D (Tanabe and Fujita, 2004). GSI (2021) gave a full detail of the method for stereoscopic viewing by looking at two images with parallax is described. Ryoki (2019a) pointed out that it is possible to see stereoscopic images by viewing with both eyes respectively, when someone saw two videos of a rotating object, which taken with a single device, staggered in time and played back side-by-side. Then, SVw was released on the World Wide Web (Ryoki, 2021). SVw was written in HTML and JS. It was a viewer that be able to also view stereoscopic images of rotating objects or images for VR provided by You Tube (2022), as shown in Fig. 2.
3. Stereoscopic Viewing of Images Taken by Moving in Any Direction
Ryoki (2019b) stated that a single image which moved or rotated in the horizontal direction could be used on SVw. Also, Ryoki (2020) pointed out that it was possible to view vertically moving images stereoscopically if they were converted to the horizontal direction by a video processing application. However, it is cumbersome to convert a vertically moving image into a horizontally moving one, and it is not practical in educational and other fields. To solve this problem, Ryoki (2022) coded SVd (Stereoscopic Video), an application that rotates the video display of SVw and plays it back as a horizontally moving video (Fig. 3). By adjusting the rotation angle of the playback image, SVd is able to play back an image that was shot in an arbitrary direction as if it were moving horizontally. It is also possible to change the rotation angle during playback. In SVw, files on the local machine could not be viewed due to HTML restrictions, but in SVd, both Web and local files can be used. Although in SVw, files on the local machine could not be viewed due to HTML restrictions, yet in SVd, both Web and local files can be used.
4. Problems of stereopsis using a single image and further prospects for SVw or SVw
Software for creating three-dimensional images of chemical structures, such as VESTA (Momma and Izumi, 2019), may draw individual atoms identically in size. When someone play back the image of a rotating object created by such an application in an ordinary viewer, in spite of they keep watching an image that is originally right-handed, it becomes suddenly appear to be rotating backwards. This misperception is thought to originate from the brain's "wrong impression," similar to the cognitive process of the "optical illusion," which has been a hot topic in recent years. The hollow mask optical illusion introduced by Ito (2021) is one of them. If this video is viewed with SVw or SVd, such optical illusion is hardly observed. Thus, SVw or SVd be able to use not only in the natural sciences for education and training, but also in the humanities, such as psychology.