Question

A camera detector has an array of 4096 by 2048 pixels and uses a colour depth of 16.

Calculate the size of an image taken by this camera; give your answer in MiB.

Answer 1

The number of pixels in the image is 4096 x 2048 = 8388608.

Each pixel uses 16 bits, so the total size of the image is 8388608 x 16 = 134217728 bits.

To convert this to MiB, we divide by 1048576 (since there are 1024 KiB in a MiB), so the size of the image is 131 MiB.

Here is the formula I used:

Size of image (MiB) = Number of pixels x Colour depth (bits/pixel) / 1048576

Step-by-step explanation: