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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bandoh, Y. Hayase, K. Takamura, S. Kamikura, K. Yashima, Y. |
| Copyright Year | 2008 |
| Description | Author affiliation: NTT Cyber Space Labs., NTT Corp., Yokosuka (Bandoh, Y.; Hayase, K.; Takamura, S.; Kamikura, K.; Yashima, Y.) |
| Abstract | It is really important to use the proper coding mode in the H.264 encoder, since it offers many more modes than the conventional methods such as MPEG-2. Typical H.264 encoders like JM and JSVM use squared error as the criterion of distortion for mode decision. However, squared error does not always provide a correct measure of the distortion from the viewpoint of subjective quality. In this paper, we investigate a mode decision algorithm based on the spatio-temporal contrast sensitivity model in order to improve the H.264 encoder. Our algorithm is designed considering the direction dependency of spatio-temporal frequency. Experiments show that our method can achieve average bit-rate savings of the order of 4.0 to 5.5% compared to the original JSVM. We confirm that both methods yield reconstructed images that basically have the same subjective image quality. |
| Starting Page | 2124 |
| Ending Page | 2127 |
| File Size | 185335 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424417650 |
| ISSN | 15224880 |
| DOI | 10.1109/ICIP.2008.4712207 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-10-12 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Automatic voltage control Cost function Frequency Digital multimedia broadcasting Image reconstruction Visual system Digital video broadcasting Degradation Quantization Distortion measurement Video signal processing Video codecs |
| Content Type | Text |
| Resource Type | Article |
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