Direction-Adaptive Partitioned Block Transform for Color Image Coding

- In this report, we investigate the application of Direction Adaptive-Partitioned Block Transform (DA-PBT) to color images and propose a basic framework for DA-PBT Color Image Coding. First, we investigate how DA-PBT performs in color spaces using the SCIELAB color metric. Comparison is also made with the other coding methods. Then, rate allocation schemes are then explored across color components. Possibility of incorporating quantization matrix is also studied. Furthermore, spatial correlation between color components is exploited in joint encoding and faster mode decision. Deblocking filter is also incorporated in the framework for subjective visual quality.

• Type: Journal
• Year: 2010
• Where: TIP
• Authors: Chuo-Ling Chang, Mina Makar, Sam S. Tsai, Bernd Girod
• Keywords: Color, Color Components, DA-PBT Color Image, Education, TIP 2010