Method for signaling image information, and method for decoding image information using same

A picture decoding method, by a decoding apparatus, the method comprising:

• receiving picture information, wherein the picture information includes a skip flag, a merge flag, prediction mode information and partition mode information;
• decoding the skip flag indicating whether a skip mode is applied to a current block;
• decoding the prediction mode information and the partition mode information for the current block, based on a value of the skip flag being 0;
• determining a prediction mode and a partition type of the current block, based on the prediction mode information and the partition mode information, wherein the prediction mode information indicates an inter prediction mode or an intra prediction mode, and the partition mode information indicates one of partition types including 2N×2N partition type, 2N×N partition type, and N×2N partition type;
• decoding the merge flag indicating whether a merge mode is applied to a partition of the current block which is partitioned based on the partition type, based on the skip flag and the prediction mode, wherein the value of the skip flag is 0 and the prediction mode is the inter prediction mode;
• and
• performing inter prediction on the partition of the current block, based on the merge flag,
• wherein decoding of the partition mode information is performed between decoding of the skip flag and decoding of the merge flag,
• wherein a binary code for the 2N×2N partition type is “1”, a binary code for the 2N×N partition type is “01”, and a binary code for the N×2N partition type is “001”.

A picture encoding method, by an encoding apparatus, the method comprising:

• generating a skip flag indicating whether a skip mode is applied to a current block;
• determining a prediction mode and a partition type of the current block, wherein the prediction mode is determined as one of an inter prediction mode or an intra prediction mode, and the partition mode is determined as one of partition types including 2N×2N partition type, 2N×N partition type, and N×2N partition type;
• generating prediction mode information and partition mode information based on the prediction mode and the partition type of the current block, based on a value of the skip flag being 0;
• generating a merge flag indicating whether a merge mode is applied to a partition of the current block which is partitioned based on the partition type, based on the skip flag and the prediction mode, wherein the value of the skip flag is 0 and the prediction mode is the inter prediction mode;
• and
• encoding picture information including the skip flag, the merge flag, the prediction mode information and the partition mode information,
• wherein in the encoded picture information, the partition mode information is configured to be decoded between decoding of the skip flag and decoding of the merge flag,
• wherein a binary code for the 2N×2N partition type is “1”, a binary code for the 2N×N partition type is “01”, and a binary code for the N×2N partition type is “001”.

A non-transitory computer-readable storage medium storing encoded picture information generated by performing:

• generating a skip flag indicating whether a skip mode is applied to a current block;
• determining a prediction mode and a partition type of the current block, wherein the prediction mode is determined as one of an inter prediction mode or an intra prediction mode, and the partition mode is determined as one of partition types including 2N×2N partition type, 2N×N partition type, and N×2N partition type;
• generating prediction mode information and partition mode information based on the prediction mode and the partition type of the current block, based on a value of the skip flag being 0;
• generating a merge flag indicating whether a merge mode is applied to a partition of the current block which is partitioned based on the partition type, based on the skip flag and the prediction mode, wherein the value of the skip flag is 0 and the prediction mode is the inter prediction mode;
• and
• encoding picture information including the skip flag, the merge flag, the prediction mode information and the partition mode information,
• wherein in the encoded picture information, the partition mode information is configured to be decoded between decoding of the skip flag and decoding of the merge flag,
• wherein a binary code for the 2N×2N partition type is “1”, a binary code for the 2N×N partition type is “01”, and a binary code for the N×2N partition type is “001”.