Pixels

Pixels

Picture element 

Pixel is a term that comes from picture element. A pixel is the smallest portion of an image or display that a computer is capable of printing or displaying. As you zoom into an image, the pixels become more and more apparent. This is because the closer you get the less quality the picture has. To the right is a picture example of a pixel.


Image resolution
Image resolution describes the detail an image holds. This term applies to raster images, film images and other images. The higher resolution, the higher amount of detail. Basically, resolution means how close lines can be together and still be visibly resolved. Resolution units can be connected to the overall size of a picture (lines per height), to physical sizes (lines per inch, lines per mm). A resolution of 10 lines per millimeter means 5 dark lines with 5 light lines, or 5 line pairs per millimeter. It is usually quoted as width × height, with the units in pixels: for example, "1024x768" means the width is 1024 pixels and the height is 768 pixels. Basically in computer games the higher the resolution the game the better it looks.

Intensity
The intensity is the number of pixels stacked on any one place, the more pixels you have stacked there the higher intensity it is.