| Title |
Objective Image Quality Metric for Block-Based DCT Image Coder Using Structural Distortion Measurement |
| Keywords |
Image Quality metric ; vision model ; human visual system ; blocking artifacts ; ringing artifacts |
| Abstract |
This paper proposes a new quantitative and objective image quality metric which is essential to verify the performance of block-based DCT image coding. The proposed metric considers not only global distortion of coded image such as spatial frequency sensitivity and channel masking using HVS based multi-channel model, but also structural distortions caused block-based coding. The experimental results show a strong correlation between proposed metric and subjective metric. |