公开(公告)号：US20200154142A1

公开(公告)日：2020-05-14

申请号：US16744384

申请日：2020-01-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeong-Il SEO ,  Wook-Joong Kim ,  Kyu-Heon Kim ,  Kyeong-OK Kang ,  Jin-Woo Hong ,  Yung-Lyul Lee ,  Ki-Hun Han ,  Jae-Ho Hur ,  Dong-Gyu Sim ,  Seoung-Jun Oh

IPC: H04N19/61 ,  H04N19/129 ,  H04N19/176 ,  H04N19/159

Abstract: Provided is an apparatus and method for encoding/decoding a moving picture based on adaptive scanning. The moving picture apparatus and method can increase a compression rate based on adaptive scanning by performing intra prediction onto blocks of a predetermined size, and scanning coefficients acquired from Discrete Cosine Transform (DCT) of a residue signal and quantization differently according to the intra prediction mode. The moving picture encoding apparatus includes: a mode selector for selecting and outputting a prediction mode; a predictor for predicting pixel values of pixels to be encoded of an input video based on the prediction mode to thereby output a residue signal block; a transform/quantization unit for performing DCT onto the residue signal block and quantizing the transformed residue signal block; and an encoder for adaptively scanning and encoding the quantized residue signal block based on the prediction mode.