Batch steganography aims at properly allocating a large payload to multiple covers, so as to keep the whole covert communication at a satisfactory level of security. JPEG is currently one of the most widely used formats for image storage and transmission. This paper presents an efficient JPEG batch steganographic scheme, which allocates the payload in a linear manner w.r.t. a new heuristic measure - the intrinsic energy of JPEG image contents, in which more concerns are with the high frequency components, and the proposed measure could also be easily generalized to cover selection in batch steganographic applications. And a calibration strategy is elaborately designed to balance the security level when JPEG covers of various QFs are involved in JPEG batch steganography. In this way, the proposed scheme can effectively resolve the problem that the statistical undetectability fluctuates dramatically w.r.t. the size and quality factor when the batch set is involved with various image parameters, and consequently maintains the overall security of the practical JPEG batch steganographic system. Experimental results show that the proposed method exhibits security performance superior or comparable to the state-of-the-art batch schemes while maintaining a low computational cost.

中文翻译：

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使用图像内容的内在能量的高效 JPEG 批量隐写术

批量隐写旨在将大量有效载荷适当地分配给多个封面，从而使整个隐蔽通信保持在令人满意的安全级别。JPEG 是目前使用最广泛的图像存储和传输格式之一。本文提出了一种高效的 JPEG 批量隐写方案，该方案以线性方式分配有效载荷，并采用了一种新的启发式度量 - JPEG 图像内容的内在能量，其中更多关注高频分量，并且所提出的度量也可以是很容易推广以涵盖批量隐写应用中的选择。并精心设计了校准策略，以平衡JPEG批量隐写涉及各种QF的JPEG覆盖时的安全级别。通过这种方式，所提出的方案可以有效地解决当批量集涉及各种图像参数时统计不可检测性随大小和质量因子波动剧烈的问题，从而保持了实用JPEG批量隐写系统的整体安全性。实验结果表明，所提出的方法在保持低计算成本的同时，表现出优于或可比于最先进的批处理方案的安全性能。