Jianbao: Treasures such as antiques and jewels cannot be preserved by three-dimensional technical photography, nor can they be examined in detail by three-dimensional.
Telemedicine: Long-distance surgery requires a sense of distance between eyes, and three-dimensional can provide the best solution. Left-right separation
Left and right separation is also called two-way video, and two-way video is independent. In principle, the effect is the same as that of left-right synthesis and up-and-down synthesis. Actually, not necessarily. Left-right separation is recognized as the best polarized stereoscopic film, which naturally has its reasons. Left and right separation mainly has the following advantages:
Left and right separated videos can be added to the independent track file AC3, and you can change Mandarin, Cantonese and English at will ... As long as there are independent tracks, you can easily join and use them, so that the left and right separated stereo movies can easily practice the left and right tonic, and you can also practice stereo, surround sound, subwoofer and even 7. 1 channel. This is not a dream, and it has become a real 4D commercial effect. Short films in left and right formats also support continuous broadcasting. If the left and right are wrong, it is more convenient to change the name. At the same time, it supports video setting, which is fast and convenient. The best left-right separation movie can reach 1080 HD, which is the best and most popular commercial stereoscopic movie format. The only disadvantage of HD separation is that it requires higher computer host and graphics card, and its volume is also large.
Left-right synthesis
Left-right synthesis combines the left and right channels into a video polarization format and synthesizes audio tracks. The left and right synthetic polarizers are generally in a wide nonstandard format (not necessarily nonstandard compression), so many merchants deceive laymen with the resolution (for example, the resolution of 1280X480, and some merchants also claim that the resolution of 720 HD is 1280X720, while the resolution of the synthetic format of 1280X480 is actually 640X480.
Left-right format
The advantages of left and right formats are: it is most convenient to watch stereo, that is, using storm video to play, or directly watching high-quality stereo with viewfinder or cross-eye, and short films in left and right formats can also be played continuously. The disadvantage is that the independent 5. 1 track AC3 cannot be added, and the video format is standard. High-definition left and right formats have higher requirements for computer hosts and graphics cards.
Upper and lower format
The top and bottom formats are basically the same as the left and right formats, and it is also a video format with nonstandard aspect ratio. Top and bottom formats are arranged up and down. The up-and-down format was originally produced because of the three-dimensional era of red net glasses at that time, because the popular wide-screen 16: 9 three-dimensional movie was made into the up-and-down format, which had a larger viewing area when it was played in 2D. The real analytic algorithm of the upper and lower formats is that the width is constant and the height is divided by 2. The main advantage of the top-down format is that it is also one of the top polarization formats, and it can be made into the top-down format of 1080 HD, which is convenient for the red network to watch. Short films can be played continuously, and video settings can be supported once and for all. The disadvantage is that it is impossible to add an independent 5. 1 track AC3, and the high-definition top and bottom formats have higher requirements for computers and graphics cards.
Interlaced format
This is a staggered format that looks like two shadows, and it is a more scientific and complicated polarization stereo format. The interleaving format of this scanning method uses anti-interleaving technology. Interlaced format is also the only standard in the market. The polarization format of video with standard aspect ratio can be made into standard DVD, which is convenient for signal storage, so stereoscopic movies with interlaced format are produced. It is impossible to make a DVD in left and right formats, except for a movie with poor red and blue colors, which cannot be compared.
The most fatal weakness of progressive interlaced format is that MPG anti-interlacing technology is still used, and the high-definition era is facing great challenges or even elimination, and interlacing above 720 has almost disappeared.
This is a vertical interlaced scanning bar interlaced format, which directly displays the stereoscopic frame of an interlaced field. This kind of movie looks fancy, but it's not. This kind of movie has also been made into a standard DVD format, which can be watched at a certain resolution by connecting staggered three-dimensional displays with DVD players. But because interlaced scanning is an old technology, many settings are unrecognizable in the high-definition era. This interlaced HD movie is not common, but it can't be said that it doesn't exist. This staggered 720 trailer also appeared in Avatar. The resolution algorithm is that the width is constant, the height is divided by 2, and the image is not deformed. It is a more scientific storage format, and may become the next generation radio stereo channel signal standard.
The advantage of interlaced scanning is that it does not need too many computers, and it is easy to play into two independent channels without decoding, so you can practice continuous playback, mixed playback and video message setting. The disadvantage is that the resolution is low, and the effect of 480P is not as good as that of HD red and blue. Apart from the left-right separation format, I naturally don't need to mention the independent audio track. Want to convert to the left and right format, not the average master, unless you use professional software.
Left-right format
As shown below, it can also be called the standard left-right format. This distorted left-right format stereoscopic movie is not uncommon in the market. The aspect ratio of this left-right format is generally standard, which is generally the standard video of 1080P, 720P, 576P and 480P. The algorithm of this video is also the width divided by 2, and the height is unchanged. The aspect ratio of this left-right format is standard, and the video inside is stretched by half. You need to match a 16: 9 or 4: 3 to restore the original shape. The resolution of this film is half that of the same composite resolution, which has little natural advantage and can be played continuously. Video settings have moderate requirements for computers. If there is no resolution above 720, it is definitely not as good as interlaced format except for half. As shown below, it can also be called the standard top-bottom format. This up-down format is also a standard aspect ratio, and the image is stretched and deformed from left to right. This top-down format is not that top-down format, so the resolution should be discounted. Although this resolution is divided by 2, fortunately, the largest one is 1080 HD. If 480P is divided by 2, it is not as simple as red, blue and high definition, but the resolution of this film is not high. Beginners should pay special attention to buying this up-and-down format film.
Green red format
The green-red format is also called the green magenta format, and the green rose is red. This kind of stereoscopic film has been very popular in the last two years. The more common movies are Journey to the Center of the Earth, My Bloody Valentine's Day, Caroline (ghost mother) and so on, and I believe they will become the new favorite of complementary films. The main reason is that the picture is softer. Compared with red-blue movies, the display of red is more vivid, because green and magenta are complementary colors. These two complementary colors are not dark and can show softer details. I hereby recommend it. Note: the effect of complementary color movies is similar, depending on personal preference and color perception, but I objectively evaluate the green magenta format as a better and more scientific complementary color movie, hoping not to argue about this meaningless topic.
Red and blue format
Red-cyan format is the most widely used complementary color format, which is what we call red-cyan format. It mainly uses red to store the information on the left and cyan to store the information on the right. Of course, the correct information includes green and blue information, and the correct information is abundant. Since everyone calls it red and blue format, I'm not saying that I'm indiscriminate. Of course, I am also an expert in this field. I don't mean to blame you. Actually, I don't know when we call red and blue movies and red and blue glasses. I just want to correct the scientific name here. There is nothing special about red and blue movies. Compared with red and blue, its color filter is not so dark, and its tolerance is greater and stronger. There are still some shortcomings. Red is the primary color and one of the key colors that constitute nature. Of course, it is dizzy to save the left image as a primary color. Anyway, seeing the other person's color is dizzy, but the red-green complementary color format gives the brain a strong sense of three-dimensionality, which is also the advantage of the green magenta film.
Red and blue formats
Compared with the red and blue format, Shine on You is not as blue at all. Red and blue are primary colors. Red stores information on the left and blue stores information on the right. Red and blue are not complementary colors (complementary colors are red, yellow, blue or a combination of red, green and blue). In addition, blue itself is relatively dark, and red is not only dark, but also very dizzy, so the red-blue format is less and less recognized by others. I think so. (More stereoscopic formats) Dynamic Cinema
The emergence of three-dimensional movies has made the long-suppressed film industry have a gratifying scene in the second spring, and cinemas have once been valued by people. The rise of every technology will inevitably lead to the development of related industries. It was at this time that dynamic cinemas appeared one after another. Because of the realistic film and television effects and novel viewing methods, it firmly grasped the hearts of many viewers as soon as it appeared.
The 3D stereoscopic cinema is based on the ordinary projection of digital movies, and displays the source images of the left and right eye channels in the form of 3D stereoscopic shooting. The projected images of each channel use two projectors to project related images. Through polarizing lens and polarizing lens, the left and right eye images of the source are projected to the left and right eyes of the audience respectively, thus producing a three-dimensional on-the-spot effect. 3D cinemas are generally designed in the form of arc curtains, which has a stronger three-dimensional effect. The equipment of 3D stereoscopic cinema is mainly composed of film source playback equipment, multi-channel fusion processing equipment, projector (number of left and right channels ×2), projection arc screen, polarizer, polarizing film, audio and other equipment.
Compared with the 3D stereoscopic cinema, the 4D cinema is called 4D on the basis of the 3D stereoscopic cinema, plus various special effects of the surrounding environment of the audience. Environmental special effects generally refer to lightning simulation/rain simulation/snowfall simulation/smoke simulation/bubble simulation/water droplet falling/vibration/spray simulation/air injection/spray/leg sweeping/ear wind/ear sound/wind blowing and so on. The equipment composition of 4D cinema is relatively complicated. On the basis of 3D stereo equipment, special effects auxiliary equipment such as special effects seats are added. 4D movie-This concept is very close to 4D movie, but the difference is vague. 4D dynamic cinema mainly emphasizes the word "dynamic", which is reflected in more freedom of seats and stronger dynamic effect, not just the simple bump and vibration effect of 4D cinema. There are also so-called 5d cinemas, which are basically classified as gimmicks and have no practical significance. According to this definition, more 6d, 7d or even more may be produced in the future. Someone has tried this game: close one eye, see with the other eye, and try to put two fingertips together. If you do this, you will find it difficult. In fact, binocular vision is the key to people's three-dimensional sense. When you open and close your left and right eyes alternately, you will find that the object you see will shift, which is parallax. When the images of the left and right eyes return to the brain, the brain will automatically synthesize and analyze the distance between the objects it sees and itself according to the different images seen by the two eyes. Therefore, 3D display devices must be able to generate bird's-eye views of the left and right wings, and submit them to the appropriate eyes respectively. This is the most important aspect of 3D display. People's research and development of 3D display is also more around this point.
It should be noted that the objects seen by both eyes are not only in different positions, but also in different angles-the left eye can only see the left side of the nose, and the right eye can only see the right side. Therefore, these two pictures need to contain more details. This is also an important factor that restricts the development of 3D movies.
The second factor that people judge distance is coloring and shadow. The distant objects are not obvious, and the brightness is poor, so they have a hazy feeling, while the nearby objects are clearer and brighter under the same illumination.
In addition, people will use line angle and motion parallax to judge distance. The farther away the object is, the smaller the parallax is until it is difficult to judge the real distance. For example, when people look at clouds, the parallax factor is very small, and people can only judge the distance by linear angle, that is, near big and far small, and different scenes and references obtained by shaking their heads. In this case, people can judge the relative distance between two objects, but the accuracy of judgment is very poor.
Successful 3D display must consider parallax, coloring and shadow, linear angle and motion parallax. This requires that the hardware can bring different pictures to the eyes, and at the same time, more details (different sides and different brightness) are needed in the image content, so it is a test for both hardware and software.