Granted Patent B2

US 12,452,420 · App. 18/441,207 · Granted Oct 21, 2025

Inventors: Donggyu Sim (Seoul, KR); Yongjo Ahn (Seoul, KR); Seanae Park (Seoul, KR)

Assignee: Koninklijke Philips N.V.

H04N19/119H04N7/18H04N7/183H04N19/124H04N19/176H04N19/44H04N19/46H04N19/70H04N19/91

Abstract

Claims (40)

1. A method for decoding a video signal, with a decoding apparatus, comprising:

determining, with the decoding apparatus, a current block by dividing a coding block,

wherein the coding block is divided recursively based on at least one of a quad-division or a binary-division,

wherein the quad-division is performed without extracting first division information for the quad-division from a bitstream,

wherein the binary-division is performed by using second division information for the binary-division extracted from the bitstream, and

wherein the second division information indicates a division direction of the binary-division;

obtaining, with the decoding apparatus, quantized coefficients from the bitstream;

obtaining, with the decoding apparatus, a residual signal by performing inverse-quantization and inverse-transform on the quantized coefficients;

generating, with the decoding apparatus, a prediction signal of the current block by performing inter prediction based on a motion vector of the current block and a reference picture for the inter prediction; and

reconstructing, with the decoding apparatus, the current block using the residual signal and the prediction signal.

2. The method of claim 1 , wherein the first division information indicates that the coding block is divided into four sub-blocks in horizontal and vertical directions.

3. The method of claim 1 , wherein the division direction is one of a horizontal direction or a vertical direction.

4. The method of claim 3 , wherein two sub-blocks obtained by the binary-division are a same size as each other.

5. A method for encoding a video signal, with an encoding apparatus, comprising:

determining, with the encoding apparatus, a current block by dividing a coding block;

generating, with the encoding apparatus, a prediction signal of the current block by performing inter prediction based on a motion vector of the current block and a reference picture for the inter prediction;

obtaining, with the encoding apparatus, a residual signal of the current block based on the prediction signal;

obtaining, with the encoding apparatus, quantized coefficients by performing transform and quantization on the residual signal; and

encoding, with the encoding apparatus, the quantized coefficients to generate a bitstream,

wherein the coding block is divided recursively based on at least one of a quad-division or a binary-division,

wherein first division information for the quad-division is not encoded into the bitstream,

wherein second division information for the binary-division is encoded into the bitstream, and

wherein the second division information indicates a division direction of the binary-division.

6. The method of claim 5 , wherein the first division information indicates that the coding block is divided into four sub-blocks in horizontal and vertical directions.

7. The method of claim 5 , wherein the division direction is one of a horizontal direction or a vertical direction.

8. The method of claim 7 , wherein two sub-blocks obtained by the binary-division are a same size as each other.

9. A transmission method of a video signal with a transmission apparatus, comprising:

determining, with the transmission apparatus, a current block by dividing a coding block;

generating, with the transmission apparatus, a prediction signal of the current block by performing inter prediction based on a motion vector of the current block and a reference picture for the inter prediction;

obtaining, with the transmission apparatus, a residual signal of the current block based on the prediction signal;

obtaining, with the transmission apparatus, quantized coefficients by performing transform and quantization on the residual signal;

encoding, with the transmission apparatus, the quantized coefficients to generate a bitstream; and

transmitting, with the transmission apparatus, the bitstream including the video signal,

wherein the coding block is divided recursively based on at least one of a quad-division or a binary-division,

wherein first division information for the quad-division is not encoded into the bitstream,

wherein second division information for the binary-division is encoded into the bitstream, and

wherein the second division information indicates a division direction of the binary-division.

10. The transmission method of claim 9 , wherein the first division information indicates that the coding block is divided into four sub-blocks in horizontal and vertical directions.

11. The transmission method of claim 9 , wherein the division direction is one of a horizontal direction or a vertical direction.

12. The transmission method of claim 11 , wherein two sub-blocks obtained by the binary-division are a same size as each other.

Assignments (1)

Priority Claims (1)

Continuity (5)

References Cited (38)