Pixels & Resolution
INFO&MORE
What is a pixel?
Short for Picture Element, a pixel is a single point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected.
What is resolution?
Refers to the sharpness and clarity of an image. The term is most often used to describe monitors, printers, and bit-mapped graphic images. In the case of dot-matrix and laser printers, the resolution indicates the number of dots per inch. For example, a 300-dpi (dots per inch) printer is one that is capable of printing 300 distinct dots in a line 1 inch long. This means it can print 90,000 dots per square inch.
What is metadata?
Data about data. Metadata describes how and when and by whom a particular set of data was collected, and how the data is formatted. Metadata is essential for understanding information stored in data warehouses and has become increasingly important in XML-based Web applications.
256 bit per inch
This picture has 150 PPI. As you can telll this picture is a lot more clear as opposed to the other picture. this is because the more pixels it has, the more clearer it is.
4 bit per inch
This picture has 20 PPI. This picture is a lot less clear and therefore slightly blurred. This is because there is less pixels in the image.