Patent ID: 9088784
Filing Date: 2015-07-21
Classification: H03M,H04N

Abstract:
1. An encoding apparatus for adaptively carrying out field-based or frame-based encoding processing at a macroblock level with image information as an input, the encoding apparatus comprising: a context model generator configured to generate a context model corresponding to motion vector information of a current macroblock based on a sum of an absolute value of motion vector information of macroblocks neighboring the current macroblock, and when the current macroblock is subjected to the field-based encoding and a neighboring macroblock is subjected to frame-based encoding, the motion vector information corresponding to the neighboring macroblock is calculated by converting the vertical component of the motion vector information corresponding to the neighboring macroblock to an equivalent for field-based encoding and is applied to the context model corresponding to the motion vector information of the current macroblock, wherein the context model generator is configured to generate the context model having a value of zero when the sum of the absolute value is less than 3, a value of 2 when the sum of the absolute value is more than 32, and a value of 1 when the sum of the absolute value is greater than or equal to three but less than or equal to 32; and an encoder configured to perform an encoding process using the generated context model corresponding to the motion vector information of the current macroblock.