Image Storage - Year 9

What are bitmap images made of?

• Vectors

• Bytes

• Shapes

• Pixels

What does each pixel in a bitmap image represent?

• A vector

• A shape

• A binary value for color

• A mathematical instruction

How does scaling affect bitmap images?

• Converts to vector

• Loss of quality

• No effect

• Improves quality

What are vector images created with?

• Pixels

• Binary values

• Mathematical instructions

• Color depth

Why are vector files usually smaller than bitmap files?

• They use mathematical instructions instead of storing each pixel

• They are lower quality

• They contain fewer colors

• They store each pixel individually

What is the formula to calculate the file size of a bitmap image?

• File Size = Resolution + Colour Depth

• File Size = Resolution x Colour Depth

• File Size = Width x Height

• File Size = (Width + Height) x Colour Depth

How many colors can 1 bit represent?

• 2

• 4

• 8

• 16

What does the RGB color model use to represent colors?

• 3 bytes for each color

• 3 bytes in total

• 1 byte for each color

• 2 bytes for each color

What is metadata for images?

• The color model used

• The resolution of the image

• The file size of the image

• Data that describes other data

What does the color depth of 1 byte allow for?

• 16.7 million colors

• 256 colors

• 16 colors

• 1024 colors