| 摘要 |
Provided is an encoding method capable of reducing a blocking phenomenon that occurs when moving-images are encoded and decoded. The method includes: performing a first encoding operation (710) on an input image using a first quantization coefficient; generating a reconstructed image (720) of the encoded image; calculating a difference (730) between corresponding partial images of the reconstructed image and the input image; and performing a second encoding operation (740) on the calculated difference using a second quantization coefficient smaller than the first quantization coefficient. Using the second encoded difference, a decoding unit can reconstruct an image of a block boundary portion more elaborately with a small number of bits, thereby significantly reducing the blocking phenomenon in the decoding operation. Provided is an encoding method capable of reducing a blocking phenomenon that occurs when moving-images are encoded and decoded. The method includes: performing a first encoding operation (710) on an input image using a first quantization coefficient; generating a reconstructed image (720) of the encoded image; calculating a difference (730) between corresponding partial images of the reconstructed image and the input image; and performing a second encoding operation (740) on the calculated difference using a second quantization coefficient smaller than the first quantization coefficient. Using the second encoded difference, a decoding unit can reconstruct an image of a block boundary portion more elaborately with a small number of bits, thereby significantly reducing the blocking phenomenon in the decoding operation. |
