Adaptive Resolution Management Signaling for Video Bitstream Encoding

The video frame is divided into blocks, and scaling is applied independently to each block based on motion characteristics. This segmentation allows selective resolution management where only certain blocks require scaling operations, reducing overall bitrate while maintaining quality in important regions.

Different scaling factors are applied to different blocks based on their local motion characteristics and importance. Blocks with high motion or high importance receive higher resolution treatment, while less important blocks use lower resolution, optimizing the balance between bitrate and quality locally.

Scaling factors are signaled in advance within the bitstream during encoding, allowing the decoder to prepare scaling operations beforehand. This preliminary action enables efficient decoding automation by providing all necessary parameters before the actual reconstruction process begins.

The scaling factors and resolution management parameters are copied into the bitstream as metadata, allowing the decoder to replicate the encoder's resolution management decisions without requiring complex real-time analysis, thus simplifying automated decoding.

The patent extracts the resolution management function from the traditional group-of-pictures re-coding approach. Instead of re-coding entire GOPs, only the necessary scaling factors for individual blocks are extracted and signaled, eliminating the overhead of intra-frames while maintaining encoding simplicity.

Instead of applying full re-coding to entire groups of pictures, the patent applies partial action by selectively scaling only the blocks that require resolution adjustment. This partial approach reduces bitrate and improves quality without the excessive complexity of complete re-coding.