![]() ![]() Nowhere is the question asked: Do pixel “virtualization” algorithms lead to a deterioration in picture quality? Is the proposed algorithm capable of assessing how much the quality of a given picture can improve (thereby negating the need for any modification if improvement cannot be achieved)? The Price of "Virtualization"ĭespite the fact that the pixel is virtual, its implementation requires very real (and expensive) LEDs. This would indicate a real breakthrough in image processing. No one has yet presented the example of two monochrome (blue, for example) parallel lines that can be visually approximated using virtual pixel technology. Unfortunately, we don’t have any specific and objective information about the applied image processing methods. As such, color distortions at the edges of the image are possible. All LEDs are not involved in the formation of the image, only a part of the neighboring pixel is. ![]() If you just change the color of the displayed letters, the example crumbles.įurthermore, even the black and white image does not take into account the color balance at the edges of the image. Manufacturers who give examples of their implementation of the virtual pixel method illustrate their point by smoothing the edges on a black and white image of letters or numbers. What’s the Resultant Quality of the Picture? However, it is necessary to weigh the pros and cons of this method. This approach is perfectly valid and legitimate. The level of improvement of the image depends on the geometry of the pixels and the actual algorithm. The implementation of such an algorithm can be carried out in real time or previously by processing the image in some modified form. Generally speaking, for an LED screen with a given resolution and some specific pixel geometry, an algorithm is presented that allows, in some cases, to improve the detail of individual image fragments. Different manufacturers explain and implement this technology differently. Now consider the technology known as "virtual pixel", "dynamic pixel”, or "virtual resolution" of the video screen. Some "pseudo-producers" and unscrupulous vendors sell video screens with a lower resolution at almost the same price as screens with a normal physical resolution, and they explain the cost by stating that they are using "virtual pixel" technology. When choosing an LED screen, you should check the screen’s actual resolution - the physical distance in millimeters between two adjacent LED pixels - by consulting the manufacturer or supplier. ![]()
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