Abstract
This paper presents a novel efficient algorithm to reduce redundant DCT and quantization computations for H.264 encoding. A theoretical analysis is performed to study the sufficient condition for DCT coefficients to be quantized to zeros in H.264. As a result, a more tight sufficient condition is derived to early detect all-zero 4x4 DCT blocks. Compared with other algorithms, the proposed algorithm provides a more precise and efficient condition to predict all-zero DCT blocks. The experimental results demonstrate that the proposed algorithm outperforms other algorithms in terms of all the evaluated performances. ©2006 IEEE.
Original language | English |
---|---|
Title of host publication | Proceedings - International Conference on Image Processing, ICIP |
Pages | 1329-1332 |
DOIs | |
Publication status | Published - 2006 |
Externally published | Yes |
Keywords
- All-zero DCT blocks
- H.264
- Integer DCT