How can I watch a regular movie in 3D
In the last decade, the creators of modern films, and indeed video materials, began to lean towards the 3D format. Various devices were invented, for example, video cameras with two lenses, televisions with the ability to view in volume without glasses, and the like. And stereoscopic photographs are taken a long time ago. Many people remember how in childhood they looked at books with stereo images using anaglyph glasses. Nowadays, a striking example in this area is the success of the movie "Avatar", which, in fact, initiated the development of an entire industry of surround cinema. The modern world of entertainment - games, music, video - is sometimes always associated with the effects of presence. The options for viewing surround video are just the sea, they are all based on working with stereo pairs .
In this article I want to share an interesting solution for those who want to see volumetric video without glasses on a regular monitor using some trick, which will be described below.
Nature has given us binocular vision, which allows us to determine the distance to objects. Thanks to this, when we review the situation and keep it in our memory, we get a sense of ourselves in space and control our movements. We even developed a geometric perception, which gives us the opportunity to represent objects that are not physically present - we usually call this imagination.
Our eyes act like telescopes, constantly aiming at objects and focusing on them. If we focus, for example, on the monitor, the hand in front of it will be blurred, defocused, and this blur is determined by the distance from the plane of the monitor to the hand on the line of sight. Our brain can estimate the distance by blurring the image, but for unusual objects, uncertainty arises whether the object is in front of the focus or behind it. Conversely, the use of prevailing images is often used to create illusions in photographs .
The relative movement of the observer can easily destroy such illusions, since it allows you to determine the distance to the object.
For example, astronomers take advantage of this and determine the distance to nearby stars, using, figuratively speaking, two positions of the Earth as eyes and fixing a change in the position of nearby stars relative to the celestial sphere. Such a change in the apparent position of the object relative to the background is called parallax .
When we watch a movie with both eyes, we determine the distance to the monitor, and this, in fact, interferes with our perception of volume. If you close any eye while watching a video, you can see a three-dimensional image due to parallax when moving objects. This is the main idea. Blurring the image on the front and back background complements the picture. When the movement stops, the stereoscopic effect is weakened, although it may remain with a defocused background or foreground. It is also important that you need to concentrate on viewing, since in this process our imagination begins to work intensely. You may even notice that with this perception you get a greater information flow. The author of this article, while watching films, received a more acute sensation from constantly inspecting the scenes - more details create a more voluminous image. Since the depth of the scene and involvement in the video image is determined by our imagination, it seems that some people may not observe such an effect of presence, or vice versa, have long been accustomed to such a voluminous imagination.
A quick camera fly over characters and landscapes, especially loved by directors, enhances the sense of presence. The constant movement of the camera with strong focusing accents in the film is a business card in order to see a three-dimensional image with one eye. You can verify the above using the example below. Of course, it is recommended to view in Full HD in full screen.
In addition, you can watch modern trailers on the network or something else, for example, slices from the same Avatar .
Volumetric imagination when using one eye is included in films with camera movement and strong defocuses. Perhaps this can help people with problems with one eye to see the video in volume.
For comfortable viewing, the highest possible resolution, a sufficient number of frames per second (fps) and a large widescreen monitor to fill the field of view are desirable. And to enhance it is better to watch in the dark, especially for monitors that give glare.
Imitation of modern shooting techniques, i.e. with the constant use of defocused objects in front and behind the focus, as well as the movement of the camera, allows you to do amateur shooting with the effects of presence on conventional cameras. True, these should be quite good devices in terms of parameters, because it is very important to reduce noise and increase detail.
I would like to draw attention to the fact that the eye strain in the conditions of the described viewing methodology becomes uneven, and this can lead to different consequences. On the one hand, the eyes can be alternated and this gives rest to the eyes, on the other hand, it is difficult to track this alternation when you are strongly involved in the process.
There can be many questions and problems, which prompted the author to write a post. The topic concerns, first of all, psychophysiology, but technological ideas may also arise. I would like to learn from readers about the proposed approach.
Walk more and take care of your eyes!
In this article I want to share an interesting solution for those who want to see volumetric video without glasses on a regular monitor using some trick, which will be described below.
A bit about vision
Nature has given us binocular vision, which allows us to determine the distance to objects. Thanks to this, when we review the situation and keep it in our memory, we get a sense of ourselves in space and control our movements. We even developed a geometric perception, which gives us the opportunity to represent objects that are not physically present - we usually call this imagination.
Our eyes act like telescopes, constantly aiming at objects and focusing on them. If we focus, for example, on the monitor, the hand in front of it will be blurred, defocused, and this blur is determined by the distance from the plane of the monitor to the hand on the line of sight. Our brain can estimate the distance by blurring the image, but for unusual objects, uncertainty arises whether the object is in front of the focus or behind it. Conversely, the use of prevailing images is often used to create illusions in photographs .
The relative movement of the observer can easily destroy such illusions, since it allows you to determine the distance to the object.
For example, astronomers take advantage of this and determine the distance to nearby stars, using, figuratively speaking, two positions of the Earth as eyes and fixing a change in the position of nearby stars relative to the celestial sphere. Such a change in the apparent position of the object relative to the background is called parallax .
The idea itself
When we watch a movie with both eyes, we determine the distance to the monitor, and this, in fact, interferes with our perception of volume. If you close any eye while watching a video, you can see a three-dimensional image due to parallax when moving objects. This is the main idea. Blurring the image on the front and back background complements the picture. When the movement stops, the stereoscopic effect is weakened, although it may remain with a defocused background or foreground. It is also important that you need to concentrate on viewing, since in this process our imagination begins to work intensely. You may even notice that with this perception you get a greater information flow. The author of this article, while watching films, received a more acute sensation from constantly inspecting the scenes - more details create a more voluminous image. Since the depth of the scene and involvement in the video image is determined by our imagination, it seems that some people may not observe such an effect of presence, or vice versa, have long been accustomed to such a voluminous imagination.
A quick camera fly over characters and landscapes, especially loved by directors, enhances the sense of presence. The constant movement of the camera with strong focusing accents in the film is a business card in order to see a three-dimensional image with one eye. You can verify the above using the example below. Of course, it is recommended to view in Full HD in full screen.
In addition, you can watch modern trailers on the network or something else, for example, slices from the same Avatar .
Conclusion
Volumetric imagination when using one eye is included in films with camera movement and strong defocuses. Perhaps this can help people with problems with one eye to see the video in volume.
For comfortable viewing, the highest possible resolution, a sufficient number of frames per second (fps) and a large widescreen monitor to fill the field of view are desirable. And to enhance it is better to watch in the dark, especially for monitors that give glare.
Imitation of modern shooting techniques, i.e. with the constant use of defocused objects in front and behind the focus, as well as the movement of the camera, allows you to do amateur shooting with the effects of presence on conventional cameras. True, these should be quite good devices in terms of parameters, because it is very important to reduce noise and increase detail.
I would like to draw attention to the fact that the eye strain in the conditions of the described viewing methodology becomes uneven, and this can lead to different consequences. On the one hand, the eyes can be alternated and this gives rest to the eyes, on the other hand, it is difficult to track this alternation when you are strongly involved in the process.
There can be many questions and problems, which prompted the author to write a post. The topic concerns, first of all, psychophysiology, but technological ideas may also arise. I would like to learn from readers about the proposed approach.
Walk more and take care of your eyes!