PICTURE CODING METHOD AND PICTURE DECODING METHOD

摘要

THE METHOD INCLUDES THE FOLLOWING UNITS: A COEFFICIENT NUMBER DETECTING UNIT (109) FOR DETECTING THE NUMBER OF COEFFICIENTS WHICH HAS A VALUE OTHER THAN O FOR EACH BLOCK ACCORDING TO THE GENERATED COEFFICIENT, A COEFFICIENT NUMBER STORING UNIT (110) FOR STORING THE NUMBER OF COEFFICIENTS DETECTED, A COEFFICIENT NUMBER CODING UNIT (111) FOR SELECTING A TABLE FOR VARIABLE LENGTH CODING BASED ON THE NUMBERS OF COEFFICIENTS IN THE CODED BLOCKS LOCATED ON THE PERIPHERY OF A CURRENT BLOCK TO BE CODED WITH REFERENCE TO THE SELECTED TABLE FOR VARIABLE LENGTH CODING SO AS TO PERFORM VARIABLE LENGTH CODING FOR THE NUMBER OF COEFFICIENTS.