Storing Images

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Answer

All 14 cards in this set

What are images on a computer made of?: Pixels
If an image uses 1 bit per pixel, how many colours can each pixel be?: 2 colours
What does the colour depth of an image determine?: The number of colours an image can use
How many bits per pixel are used in images taken with a smartphone?: 30 bits per pixel
How do you calculate the file size of an image?: Multiply the width by the height by the colour depth
What happens when you have a lot of pixels in an image?: You can create a detailed image where pixels blend into each other
How is the colour of a pixel stored on a computer?: As a binary number
If an image uses 4 bits per pixel, how many colours can it display?: 16 colours
What is the benefit of using more bits per pixel in an image?: The image can have more colours and a higher quality
What might be a drawback of increasing the number of bits used per pixel?: The image file will use more data and take up more space
How many colours can a pixel display if the image uses 2 bits per pixel?: 4 colours
Why do images from smartphones use 30 bits per pixel?: To allow each pixel to be one of over a billion colours
When calculating the file size of an image, what does the 'colour depth' refer to?: How many bits are stored for each pixel
What does an increase in colour depth do to an image?: It increases the number of possible colours per pixel

Round complete