Efficient scalable coding concept

US10104386B2 · kind B2 · utility

Assignee

• GE Video Compression, LLC · US

Inventors

• Karsten Suehring · Berlin, DE
• Thomas SCHIERL · Berlin, DE
• Valeri George · Berlin, DE
• Detlev Marpe · Berlin, DE
• Robert SKUPIN · Berlin, DE

Key dates

• Filing date: Jun 29, 2015
• Grant date: Oct 16, 2018
• Expiry date: Jun 23, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/156
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Scalable coding concepts are described. One aspect improves parallel decoding of inter-dependent layers of a multi-layer video data stream by introducing a long-term syntax element structure for guaranteeing that during a predetermined time period the pictures of the dependent layer are subdivided so that borders of the spatial segments of the pictures of the second layer and the spatial segments of the first layer overlay. Another aspect concerns upsampling from base layer to enhancement layer. Another aspect introduces a long-term syntax element structure allowing the decoder to determine the inter-layer offset for a predetermined time period. Another aspect introduces a type indicator field changing a way a layer indicator field within the NAL unit headers is to be interpreted. Another aspect allows different codecs/standards to be used for the different layers. Another aspect concerns a syntax element structure which indicates the inter-layer offset in units of the base layer blocks.