5 A bitmap image has the following resolution: 1140 × 1080 pixels. The image uses a colour depth of 24 bits. a Explain the term pixel. [1] b Explain the term colour depth. [1] c Calculate how many of these images could be stored on a 32-GiB memory stick. [3] d Describe how it would be possible to increase the number of these images which could be stored on this memory stick.

A pixel is the smallest individual unit of a digital image or graphic that can be displayed on a digital screen, typically represented as a tiny square of color.

Colour depth refers to the number of bits used to represent the color of a single pixel in an image, determining the total number of distinct colors that can be displayed.

9302 images
Steps:

To increase the number of images stored, you could:

1. Reduce the image resolution: Decrease the number of pixels (e.g., from 1140x1080 to a lower resolution).
2. Reduce the colour depth: Use fewer bits per pixel (e.g., from 24 bits to 16 bits or 8 bits), which would reduce the range of available colors.
3. Compress the images: Apply image compression techniques (e.g., using formats like JPEG for lossy compression or PNG for lossless compression) to reduce file size.