FILE SIZE

• height x width x colour depth = file size in bits
• eg 5 x 5 x 2


  = 50 bits
• divide bits by 8 to find bytes
• How many bits are needed per pixel for 256 colors?

  8 bits per pixel
• How is the image data calculated for an image of size 1024 x 768 pixels with 8 bits per pixel?

  Image data = 1024 x 768 pixels x 8 bits/pixel
• How many bytes are equivalent to 6,291,456 bits?

  786,432 bytes
• How is the final file size calculated considering the overhead?

  Image file size = 786,432 bytes * 1.2
• What percentage overhead is accounted for due to metadata?

  20% overhead
• What is the total number of colors that can be represented with 8 bits per pixel?

  256 colors
• file size 


  sampling rate x sample resolution x length (s)