[Method of representing the image data] (1) Extract strings sequentially in units of 4 bits from the bit string of the image data, and then append the 4-bit value “0100” to the beginning of each 4 bits to represent it in 8 bits.
[Method of representing the image data] (1) Extract strings sequentially in units of 4 bits from the bit string of the image data, and then append the 4-bit value “0100” to the beginning of each 4 bits to represent it in 8 bits.