ESA Certified Alarm Technician Practice Exam

What term refers to images made up of squares or rectangles in video technology?

1. Vectors

2. Pixels

3. Bitmaps

4. Frames

The correct answer is: Pixels

The term that refers to images made up of squares or rectangles in video technology is pixels. Pixels are the smallest units of a digital image or display, and they represent the building blocks of digital visuals. Each pixel can be thought of as a tiny box that contains color information, and when many of these boxes are combined, they form the complete image that you see on a screen. In video technology, images displayed are composed of thousands or millions of these pixels, which work together to create high-resolution pictures. The concept is fundamental to understanding how digital images are created and manipulated, as each pixel is addressed individually in digital image processing and display. Vectors, on the other hand, are based on mathematical formulas and are used to represent images in a way that allows for scaling without loss of quality. Bitmaps are a type of image file that uses pixels to represent images, often synonymous with raster graphics. Frames usually refer to individual still images in a video sequence and are not focused on the pixel structure itself. Therefore, while all these related terms have implications in video technology, pixels specifically denote the rectangular or square components that construct images.