Patent ID: 8861880

Claim:
An image processing device comprising: a significant digit number encoding unit that designates a predetermined number of coefficient data items of a plurality of coefficient data items generated from image data as a set, obtains the maximum number of significant digits which is the number of significant digits of coefficient data having the greatest absolute value in relation to each set every cycle, and encodes information regarding the maximum number of significant digits; an absolute value encoding unit that extracts an absolute value for the maximum number of significant digits of each coefficient data item in a set which has been encoded by the significant digit number encoding unit, and encodes the absolute value at a cycle different from that of encoding of the significant digit number encoding unit; and a sign encoding unit that encodes a positive or negative sign of each coefficient data item whose absolute value is not 0 in a set which has been encoded by the absolute value encoding unit at a cycle different from that of encoding of the absolute value encoding unit.