Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video

doi:10.1007/s12204-014-1513-7

上海交通大学学报（英文版） ›› 2014, Vol. 19 ›› Issue (4): 385-391.doi: 10.1007/s12204-014-1513-7

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Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video

GUO Jie*(郭捷), XU Jia-yun (徐家运), BAO Jia-li (鲍佳立)

(College of Information Security, Shanghai Jiaotong University, Shanghai 200240, China)

出版日期:2014-08-30 发布日期:2014-10-13
通讯作者: GUO Jie(郭捷) E-mail:guojie@sjtu.edu.cn

Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video

GUO Jie*(郭捷), XU Jia-yun (徐家运), BAO Jia-li (鲍佳立)

(College of Information Security, Shanghai Jiaotong University, Shanghai 200240, China)

Online:2014-08-30 Published:2014-10-13
Contact: GUO Jie(郭捷) E-mail:guojie@sjtu.edu.cn

摘要/Abstract

摘要： A selective encryption scheme for region of interest (ROI) of H.264 video is proposed to protect the personal privacy in a video. The most important part of video can be protected with less cost and operation by only encrypting the content of ROIs. Human face regions are selected as ROI and detected by using Gaussian skin color model. Independent ROI encoding is realized with the mechanism of flexible macro-block ordering (FMO). Frames are divided into grid-like slice-groups which can be combined flexibly to form a required ROI. Both luminance component and chrominance component of the macro-blocks in ROI are modified to achieve good encryption quality and location accuracy. In the process of decryption, the encrypted area is located automatically. There is no need to transmit additional position information of ROIs to the end of decryption. The encrypted video is decrypted correctly with the secret key. JM18.4 software is employed to perform the simulation experiment. Experimental results show the accuracy and effectiveness of our scheme to encrypt and decrypt the ROIs in H.264 video.

关键词: region of interest (ROI), selective video encryption, flexible macro-block ordering (FMO)

Abstract: A selective encryption scheme for region of interest (ROI) of H.264 video is proposed to protect the personal privacy in a video. The most important part of video can be protected with less cost and operation by only encrypting the content of ROIs. Human face regions are selected as ROI and detected by using Gaussian skin color model. Independent ROI encoding is realized with the mechanism of flexible macro-block ordering (FMO). Frames are divided into grid-like slice-groups which can be combined flexibly to form a required ROI. Both luminance component and chrominance component of the macro-blocks in ROI are modified to achieve good encryption quality and location accuracy. In the process of decryption, the encrypted area is located automatically. There is no need to transmit additional position information of ROIs to the end of decryption. The encrypted video is decrypted correctly with the secret key. JM18.4 software is employed to perform the simulation experiment. Experimental results show the accuracy and effectiveness of our scheme to encrypt and decrypt the ROIs in H.264 video.

Key words: region of interest (ROI), selective video encryption, flexible macro-block ordering (FMO)

中图分类号:

TP 309.2

GUO Jie*(郭捷), XU Jia-yun (徐家运), BAO Jia-li (鲍佳立). Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video[J]. 上海交通大学学报（英文版）, 2014, 19(4): 385-391.

GUO Jie*(郭捷), XU Jia-yun (徐家运), BAO Jia-li (鲍佳立). Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video[J]. Journal of shanghai Jiaotong University (Science), 2014, 19(4): 385-391.

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Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video

Region of Interest Based Selective Encryption Scheme for Privacy Protection in H.264 Video

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