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The byte size of an image is calculated by multiplying the number of pixels in the image by the number of bytes required to store each pixel's color information.
To determine the number of pixels in an image, you can multiply the image's width in pixels by its height in pixels. For example, an image that is 1000 pixels wide by 800 pixels tall would contain a total of 800,000 pixels.
The number of bytes required to store each pixel's color information depends on the color depth of the image. The color depth specifies the number of bits that are used to represent each color channel (red, green, and blue) in a pixel. For example, an 8-bit color depth allows for 256 possible values for each color channel, while a 24-bit color depth allows for 16.7 million possible values for each color channel.
To calculate the byte size of an image, you can use the following formula:
Byte Size = Number of Pixels x Number of Bytes per Pixel
For example, let's say you have an image with a resolution of 1000 x 800 pixels and a color depth of 24 bits (8 bits per color channel). To calculate the byte size of this image, you would use the following formula:
Byte Size = 1000 x 800 x (24 / 8) Byte Size = 1000 x 800 x 3 Byte Size = 2,400,000 bytes (or 2.4 megabytes)
So the byte size of this image would be 2.4 megabytes.