What are pixels?
pixels are dots used to display an image on a screen or printed matter. The word is a mixture of words pic there and el EMENT. The term usually refers to pixels in a digital context, but may be more generalized to refer to any smallest unit of image.
It is important to note that pixels are not a size of size, although this term is often used as if it were. For example, many digital cameras provide the level of pixels on the thumb (PPI) that have inserted into the created image files. Users then see this measurement and assume that units have a actual size that is evenly valid.
The video monitor consists of many millions of pixels arranged in the grid. The monitors also have a little depth that controls how many gray or colors each pixel is able to display. For example, on an 8 -bit display, each unit can expose colors of 8 -bit colors equal to 2
While pixels are the smallest complete element of the image, they consist of even smaller elements. For example, in a standard RGB monitor, each pixel has three dots in it: red, blue and green dot. Theoretically, all these dots converge at the same point, so it is visibly trouble -free, but in practice there is often some gloom. The level of the total pixels in the picture is referred to as its resolution and the higher the resolution in the small area, the more difficult it is to distinguish between units.
While pixels are often considered a square, because they are usually in the case of computer monitors, it is not always accurate. Many digital video standards such as NTSC and PAL use rectangular pixels with aspect ratio than 1: 1.
The term megapixels is used by digital camera manufacturers to Despte the resolution in which the cameras areable to take pictures. In most computer contexts, the resolution is listed as two dimensions, for example, in the computer resolution of 1600 x 1200, which represents a width of 1600 and a height of 1200 pixels. Digital camera manufacturers take the sum of pixels generated by multiplying both sizes, so the camera capable of producing images at 1600 x 1200 would produce a total of 1,920,000 pixels, or 1.9 megapixels.