Selective Encryption of Human Skin in JPEG Images

Abstract

In this study we propose a new approach for selective encryption in the Huffman coding of the Discrete Cosine Transform (DCT) coefficients using the Advanced Encryption Standard (AES). The objective is to partially encrypt the human face in an image or video sequence. This approach is based on the AES stream ciphering using Variable Length Coding (VLC) of the Huffman's vector. The proposed scheme allows the decryption of a specific region of the image and results in a significant reduction in encrypting and decrypting processing time. It also provides a constant bit rate while maintaining the JPEG and MPEG bitstream compliance.

Selective encryption of C2DVLC of AVS video coding standard for I & P frames

“…Real-time The experiments have shown that we can achieve the desired level of encryption in each frame, while maintaining the full AVS video coding standard compliance, under a minimal set of computational requirements. The proposed system can be extended to protect only ROI [17] in video surveillance and can be applied to medical image transmission [18].…”

Fast protection of H.264/AVC by selective encryption of CABAC

“…Hence, it is perfect for multimedia playback on handheld devices. The proposed system can be extended for ROI specific video protection [11] for video surveillance and can be applied to medical image transmission [10]. …”

An Efficient Security System for CABAC Bin-Strings of H.264/SVC

“…The proposed system was suitable for video distribution to users who had subscribed to a different video quality regarding bandwidth, storage, and device rendering capabilities. The same system can be extended to ROI for bit-rate reduction in video surveillance [31], [51] without any modification. The error resilience [52] issues for the proposed system can be investigated in the transmission scenarios of scalable layers as a future work.…”