METHOD AND APPARATUS FOR ENCODING FREQUENCY CONVERSION BLOCK USING FREQUENCY MASK TABLE, AND METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO USING SAME

摘要

One embodiment of the present invention relates to a method and an apparatus for encoding a frequency conversion block using a frequency mask table, and to a method and an apparatus for encoding/decoding video using same. One embodiment of the present invention provides the method and the apparatus for encoding the frequency conversion block using the frequency mask table, and the method and the apparatus for encoding/decoding video using same, comprising the following steps: generating a masked frequency conversion block by masking the frequency conversion block using the frequency mask table; encoding information on the frequency conversion block and the frequency mask table, which is used for masking the frequency conversion block; a decoding end extracting information on the frequency mask table so as to extract a masked quantized frequency coefficient row which is recorded on a bit stream; setting to 0 all of the quantized frequency coefficients in a location that is not recorded on the bitstream by using the extracted information on the frequency mask table, for generating the quantized frequency coefficient row; and reverse-scanning the generated quantized frequency coefficient row for forming and encoding the quantized frequency conversion block.