HDR image watermarking using saliency detection and quantization index modulation

• URL: http://arxiv.org/abs/2302.11361v2
• Date: Thu, 23 Feb 2023 08:55:04 GMT
• Title: HDR image watermarking using saliency detection and quantization index modulation
• Authors: Ahmed Khan, Minoru Kuribayashi, KokSheik Wong, Vishnu Monn Baskaran
• Abstract summary: A novel saliency (eye-catching object) detection based trade-off independent HDR-IW is proposed to improve robustness, imperceptibility and payload. Experimental results suggest that the proposed work outperforms state-of-the-art methods in terms of improving the conflicting requirements.
• Score: 19.092206155893773
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: High-dynamic range (HDR) images are circulated rapidly over the internet with risks of being exploited for unauthorized usage. To protect these images, some HDR image based watermarking (HDR-IW) methods were put forward. However, they inherited the same problem faced by conventional IW methods for standard dynamic range (SDR) images, where only trade-offs among conflicting requirements are managed instead of simultaneous improvement. In this paper, a novel saliency (eye-catching object) detection based trade-off independent HDR-IW is proposed, to simultaneously improve robustness, imperceptibility and payload. First, the host image goes through our proposed salient object detection model to produce a saliency map, which is, in turn, exploited to segment the foreground and background of the host image. Next, the binary watermark is partitioned into the foregrounds and backgrounds using the same mask and scrambled using a random permutation algorithm. Finally, the watermark segments are embedded into selected bit-plane of the corresponding host segments using quantized indexed modulation. Experimental results suggest that the proposed work outperforms state-of-the-art methods in terms of improving the conflicting requirements.

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