What characterizes bitmap images compared to vector graphics?

Bitmap images are characterized by being created using a grid of pixels, which are individual points of color that collectively form an image. This structure means that bitmap images rely on a fixed resolution, and each pixel represents specific information about the color in that part of the image. As a result, when a bitmap image is enlarged, it can become pixelated or blurry because the pixels themselves do not change in density or information; more space is used to display the same number of pixels.

In contrast, characteristics like smooth lines and curves pertain more to vector graphics, which utilize mathematical equations to create shapes and can scale infinitely without losing quality. Resizing a bitmap image typically results in loss of quality, unlike vector graphics, which maintain clarity. Additionally, bitmap images are not restricted to being monochrome; they can display a wide range of colors based on pixel data. Therefore, the defining feature of bitmap images compared to vector graphics is indeed that they are created using a grid of pixels.