Optimization-Based Pseudo-Analog Transmission Scheme for Wireless Feature Map Transmission

Xu, Naijie; Chen, Xiaohui; Chen, Li; Yin, Huarui; Wang, Weidong

doi:10.1109/iccc56324.2022.10065705

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2023

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“…In particular, the schemes are designed to achieve graceful quality degradation for wireless channels whose conditions may vary unpredictably and drastically. Some of the schemes such as SoftCast [6], ParCast [7], LineCast [8], OmniCast [9], and FeatureCast [10] provide signals which can be transmitted in an analog form with a small amount of digital metadata. The metadata are used to scale power in visual data chunks according to their impact on quality.…”

Section: Introductionmentioning

confidence: 99%

Subsampling of 3D Pixel Blocks as a Video Compression Method for Analog Transmission

Pastuszak

2023

Electronics

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Hybrid digital–analog transmission of video signals enables flexibility in dividing video information into two parts to utilize the available bandwidth better. This study proposes a compression scheme to reduce the utilized bandwidth. The scheme uses different subsampling in three-dimensional (3D) blocks, where subsampling factors are selected to minimize reconstruction distortion. The study evaluates various methods for subsampling and reconstruction to find the best combination in terms of reconstruction quality and complexity. Results show that medium-quality reconstructions can be obtained for compression ratios of about 0.125–0.3 samples per pixel.

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