Patent ID: 11882315
Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A non-transitory computer-readable medium storing a bitstream generated by an encoding method, the method comprising:
obtaining coefficient information of a current transform block, the coefficient information including absolute value information of a current transform coefficient in the current transform block, the absolute value information indicating whether an absolute value of the current transform coefficient is greater than 3; and
generating a bitstream by encoding the coefficient information of the current transform block,
wherein encoding the coefficient information comprises entropy-encoding the absolute value information of the current transform coefficient, and
wherein entropy-encoding the absolute value information of the current transform coefficient comprises:
determining probability information of the absolute value information of the current transform coefficient based on significant coefficient flag information of neighboring transform coefficients of the current transform coefficient, the significant coefficient flag information indicating whether a neighboring transform coefficient is non-zero or not; and
encoding the absolute value information of the current transform coefficient based on the probability information,

wherein the neighboring transform coefficients include coefficients with coordinates of (x+2, y), (x+1, y+1), and (x, y+2), and
wherein x and y are representative of coordinates of the current transform coefficient.