Viewing Direction Weighted Bit Plane LSB Data Hiding in 360° Videos
| Autor: | Tran, Dang Ninh, Zepernick, Hans-Juergen, Chu, Thi My Chinh |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Economic and social effects
Least significant bits capacity Viewing directions LSB data hiding bit plane 360° videos viewing direction Least significant bit data hiding Telekommunikation Gaussian Mixture Model non-content-based perceptual SSIM Helmet mounted displays Telecommunications Bit planes Behavioral research Content-based Steganography Data-hiding 360° video |
| Zdroj: | 2021 15th International Conference on Signal Processing and Communication Systems (ICSPCS). |
| Popis: | In this paper, we propose a viewing direction weighted bit plane least significant bit (LSB) data hiding method for 360° videos. Normalized Gaussian mixture models (GMMs) of the distributions of the relative viewing direction frequency for latitude, longitude, and both latitude and longitude are used to describe the human viewing behavior of 360° videos on head-mounted displays (HMDs). Apart from formulating data hiding weight functions to control the amount of secret data to be hidden at given latitudes and longitudes, the GMMs are used in this work also to define viewing direction weighted bit plane functions. These viewing direction weighted bit plane functions specify the number of bit planes to be used for data hiding depending on the latitude and longitude. As humans pay more attention to the central front view of 360° videos when watched on HMDs, the number of engaged bit planes is decreased accordingly from the poles to the equator, and from the west and the east to the front view. A performance assessment of the proposed viewing direction weighted bit plane LSB data hiding method is conducted, showing the trade-offs between capacity and objective perceptual video quality. The results indicate that it is preferable to first utilize a given bit plane for data hiding in an entire 360° video frame before engaging the next higher bit plane subject to the viewing direction weighted bit plane functions. © 2021 IEEE. |
| Databáze: | OpenAIRE |
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