H.265/HEVC video steganography method based on directional mapping and multi-region embedding.

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Bibliographic Details
Title:	H.265/HEVC video steganography method based on directional mapping and multi-region embedding.
Authors:	XIE, Jiachen¹, ZHANG, Xiang¹ zhangxiang@nuist.edu.cn, FU, Daoyong¹, HE, Ziwen¹, LI, Ziqiang¹
Source:	Computer Engineering & Science / Jisuanji Gongcheng yu Kexue. May2026, Vol. 48 Issue 5, p854-864. 11p.
Subjects:	MPEG (Video coding standard), Mathematical mappings, Video compression, Cryptography
Abstract:	In recent years, video steganography for H.265/HEVC attracted considerable attention. Among them, video methods that employ prediction unit (PU) as embedding carriers have become a research focus in this field. Such methods achieve information hiding by designing mapping rules between secret messages and PU. However, since the embedding of secret information induces substantial modifications to the prediction units, their resistance to steganalysis is relatively weak. To address this issue, this paper proposes a H.265/HEVC video steganography method based on PU directional mapping and multi-region embedding. The proposed method first extracts the partition mode combinations of two adjacent PU from 8x8 and 16x16 coding unit (CU), and maps them to a two-dimensional coordinate through directional mapping. Then, for different PU partition mode combinations, a multi-region embedding strategy is further designed to achieve high-capacity adaptive steganography with minimal modification distortion, thereby enhancing the method's resistance to steganalysis. Experimental results demonstrate that the proposed method out-performs existing PU-based video steganography methods in terms of visual quality, bitrate control, and resistance to steganalysis. This method holds significant potential for applications in covert video communication. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	In recent years, video steganography for H.265/HEVC attracted considerable attention. Among them, video methods that employ prediction unit (PU) as embedding carriers have become a research focus in this field. Such methods achieve information hiding by designing mapping rules between secret messages and PU. However, since the embedding of secret information induces substantial modifications to the prediction units, their resistance to steganalysis is relatively weak. To address this issue, this paper proposes a H.265/HEVC video steganography method based on PU directional mapping and multi-region embedding. The proposed method first extracts the partition mode combinations of two adjacent PU from 8x8 and 16x16 coding unit (CU), and maps them to a two-dimensional coordinate through directional mapping. Then, for different PU partition mode combinations, a multi-region embedding strategy is further designed to achieve high-capacity adaptive steganography with minimal modification distortion, thereby enhancing the method's resistance to steganalysis. Experimental results demonstrate that the proposed method out-performs existing PU-based video steganography methods in terms of visual quality, bitrate control, and resistance to steganalysis. This method holds significant potential for applications in covert video communication. [ABSTRACT FROM AUTHOR]
ISSN:	1007130X
DOI:	10.3969/j.issn.1007-130X.2026.05.009