Encoding/decoding method for video signal and device therefor

An apparatus for encoding a video signal, comprising:

• a memory configured to store the video signal;
• and
• a processor coupled to the memory,
• wherein the processor is configured to:
• derive transform kernels being applied to a current block, wherein the transform kernels include a horizontal transform kernel and a vertical transform kernel;
• determine a non-zero region in which a transform is applied to the current block based on the transform kernels and a width and/or a height of the current block;
• and
• perform a transform on the current block based on the transform kernels;
• generate a transform index specifying which transform kernels are applied along horizontal and vertical directions of the current block based on that a transform skip is not applied to the current block, wherein the transform kernels correspond to at least one of predefined transform types including DCT2, DST7 and DCT8;
• and
• generate a syntax element representing whether the transform skip is applied to the current block.

An apparatus for transmitting data for a video signal, comprising:

• at least one processor configured to obtain a bitstream for the video signal;
• and
• a transmitter configured to transmit the data comprising the bitstream,
• wherein the at least one processor is configured to:
• derive transform kernels being applied to a current block, wherein the transform kernels include a horizontal transform kernel and a vertical transform kernel;
• determine a non-zero region in which a transform is applied to the current block based on the transform kernels and a width and/or a height of the current block;
• and
• perform a transform on the current block based on the transform kernels;
• generate a transform index indicating which transform kernels are applied along horizontal and vertical directions of the current block based on that a transform skip is not applied to the current block, wherein the transform kernels correspond to at least one of predefined transform types including DCT2, DST7 and DCT8;
• and
• generate a syntax element representing whether the transform skip is applied to the current block.