In the early 2010s, 3D TVs had been popular for several years. However, as it turned out, there was little 3D content available, so manufacturers promoted these TVs’ ability to convert standard 2D content into 3D. TVs capable of displaying 3D images use special software to convert two-dimensional video into three-dimensional video. Simply put, the 2D image “comes to life” by creating the illusion of depth. To do this, the TV uses software that analyzes the frame, creates duplicates of it, and overlays them in such a way as to create the sensation of three-dimensional space.
The principle of operation involves generating a separate image for each eye. For such a system to work properly, the TV must be equipped with a sufficiently powerful processor capable of processing the video stream in real time and converting it to 3D.
Nuances and features of 2D-to-3D conversion
The conversion process involves certain challenges. The main one is determining the depth of the scene, since not all elements of the frame can be correctly converted to 3D. For example, complex backgrounds, fine details, or fast-moving objects sometimes appear “flat” even after conversion.
For video shot at 24 frames per second (the standard for classic films), it is recommended that the TV increase the frame rate to 120 frames per second. In active 3D mode, additional intermediate frames are generated; simply put, they are duplicated, which makes the actors’ movements appear smooth. This effect is known in the television industry as the “soap opera effect.”
It is also worth noting that modern technologies allow for more accurate conversion of 2D to 3D. However, even with such technologies, fully realistic 3D remains a difficult goal to achieve, and professional filmmakers still prefer to shoot separate 3D versions of their films. Moreover, 3D TVs have not been produced since 2017, partly due to a lack of demand, but the real reason is that with the increase in resolution to 4K, image processing requires enormous computational resources; it makes no sense for manufacturers to increase a TV’s processing power for this reason, as it would significantly raise its price and make it uncompetitive.
