A PD Feed-back Rate Control Algorithm for Multiple Video Object Coding

Object-based video coding, such as MPEG-4, supports the encoding and manipulating of individual video object. Rate control algorithm for multiple video object coding shall adapt to the perceptual importance of the video object. For this purpose, we present a joint rate control algorithm for coding multiple video objects. The proposed algorithm is aiming to obtain superior quality for the video objects with higher perceptual importance, while squeezing bits from the video objects with lower perceptual importance. The quality gaps between video objects is regulated to the target level through the proportional-derivative feedback design.