A statistical feedforward/fedback buffer control for the transmission of digital video signals compressed by...

Area of Science:

• Digital video compression
• Signal processing
• Computer vision

Background:

• Intrafield coding is crucial for video signal processing.
• Effective buffer control is essential for maintaining consistent video bit rates.
• Scene changes present challenges for traditional video coding methods.

Purpose of the Study:

• To introduce a new buffer-control policy for intrafield video coding.
• To enhance bit rate predictability and control, especially during scene transitions.
• To present a simple yet effective solution for video compression optimization.

Main Methods:

• The proposed method utilizes two statistical bit rate predictors: feedback and feedforward.
• A feedback predictor is employed for stationary image sequence portions.
• A feedforward predictor is specifically used to manage bit rates at scene changes.

Main Results:

• The buffer-control policy demonstrates effective control over the output bit rate.
• The method proves capable of managing bit rates efficiently even when scene changes occur.
• Implementation simplicity is a key characteristic of the presented policy.

Conclusions:

• The new buffer-control policy offers a robust solution for intrafield video coding.
• The dual-predictor approach effectively addresses the challenges posed by scene changes.
• This policy provides a practical and efficient means to control video bit rates.