Image encoding/decoding method and device, and recording medium storing bitstream

A method of encoding an image, the method comprising:

• obtaining transform coefficients of a current block from a residual block of the current block;
• determining a scanning unit and a scanning order of the current block;
• and
• entropy encoding the transform coefficients of the current block by scanning the same in the determined scanning unit and scanning order.

A recording medium, wherein the recording medium stores a bitstream generated by an encoding method including:

• obtaining transform coefficients of a current block from a residual block of the current block;
• determining a scanning unit and a scanning order of the current block;
• and
• entropy encoding the transform coefficients of the current block by scanning the same in the determined scanning unit and scanning order.