Název:	Improved Lossless Depth Image Compression
Autoři:	Fischer, Roland Dittmann, Philipp Schröder, Christoph Zachmann, Gabriel
Citace zdrojového dokumentu:	Journal of WSCG. 2020, vol. 28, no. 1-2, p.168-176.
Datum vydání:	2020
Nakladatel:	Václav Skala - UNION Agency
Typ dokumentu:	článek article
URI:	http://wscg.zcu.cz/WSCG2020/2020-J_WSCG-1-2.pdf http://hdl.handle.net/11025/38439
ISSN:	1213-6972 (print) 1213-6980 (CD-ROM) 1213-6964 (on-line)
Klíčová slova:	bezeztrátová komprese;hloubková komprese obrazu;streamování RGB-D;Azure Kinect
Klíčová slova v dalším jazyce:	lossless Compression;Depth Image Compression;RGB-D Streaming;Azure Kinect
Abstrakt v dalším jazyce:	Since RGB-D sensors became massively popular and are used in a wide range of applications, depth data compression became an important research topic. Live-streaming of depth data requires quick compression and decompression. Accurate preservation of information is crucial in order to prevent geometric distortions. Custom algorithms are needed considering the unique characteristics of depth images. We propose a real-time, lossless algorithm which can achieve significantly higher compression ratios than RVL. The core elements are an adaptive span-wise intra-image prediction, and parallelization. Additionally, we extend the algorithm by inter-frame difference computation and evaluate the performance regarding different conditions. Lastly, the compression ratio can be further increased by a second encoder, circumventing the lower limit of four-bit per valid pixel of the original RVL algorithm.
Práva:	© Václav Skala - UNION Agency
Vyskytuje se v kolekcích:	Volume 28, Number 1-2 (2020)

Všechny záznamy v DSpace jsou chráněny autorskými právy, všechna práva vyhrazena.