Image processing device and method

An image processing method comprising:

• performing filter processing on neighboring pixels that are adjacently located to a current block for intra prediction using filter coefficients with values set according to a block size of the current block for the intra prediction;
• controlling the filter processing so as to perform the filter processing turned on or off as to the neighboring pixels on the basis of a mode number of an intra prediction mode;
• and
• performing intra prediction on a current pixel within the current block using the neighboring pixels as reference pixels for the intra prediction to generate a prediction image.

A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to perform an image processing method, the method comprising:

• performing filter processing on neighboring pixels that are adjacently located to a current block for intra prediction using filter coefficients with values set according to a block size of the current block for the intra prediction;
• controlling the filter processing so as to perform the filter processing turned on or off as to the neighboring pixels on the basis of a mode number of an intra prediction mode;
• and
• performing intra prediction on a current pixel within the current block using the neighboring pixels as reference pixels for the intra prediction to generate a prediction image.

An image processing apparatus comprising:

• circuitry configured to
• select, from a plurality of blocks with different sizes, a block with predetermined size as a current block for intra prediction,
• perform filter processing on neighboring pixels that are adjacently located to the current block for intra prediction using filter coefficients with values set according to a block size of the current block for the intra prediction,
• control the filter processing so as to perform the filter processing turned on or off as to the neighboring pixels on the basis of a mode number of an intra prediction mode,
• perform intra prediction on a current pixel within the current block using the neighboring pixels as reference pixels for the intra prediction to generate a prediction image, and
• encode image data using the prediction image.