The Efficient Coding Tools based 3-Dimensional Transform in H.264/AVC

In this paper, we propose 3DTE(3-Dimensional Transform Environment) that is based on 3DT(Dimensional Transform) that performs 2-dimensional integer DCT(Discrete Cosine Transform) based on 4x4 block and 1-dimensional integer DCT based on 4x1 block after collecting same frequency coefficients in neighboring 4x4 block and supports it's additional coding tools for high performance. The transform of 3DT can keep prediction error by using 4x4 block and reduce spatial redundancy additionally. The proposed 3DTE can provide coding tools to improve the coding efficiency with using 3DT. The performance of 3DTE compared to JM11.0 is average 3.58% and 5.40% bit savings for all test sequences and HD sequences, respectively, with keeping subjective video quality in High profile.