Scrambling for Anonymous Visual Communications
نویسندگان
چکیده
In this paper, we present a system for anonymous visual communications. Target application is an anonymous video chat. The system is identifying faces in the video sequence by means of face detection or skin detection. The corresponding regions are subsequently scrambled. We investigate several approaches for scrambling, either in the image-domain or in the transform-domain. Experiment results show the effectiveness of the proposed system.
منابع مشابه
Region-Based Transform-Domain Video Scrambling
In this paper, we address the problem of scrambling regions of interest in a video sequence. We target applications such as video surveillance preserving privacy, anonymous video communications, or TV news safeguarding the anonymity of a source. We propose an efficient solution based on transform-domain scrambling. More specifically, the sign of selected transform coefficients is flipped during...
متن کاملEnabling Privacy For Distributed Video Coding By Transform Domain Scrambling
In this paper, a novel scheme for video scrambling is introduced for Distributed Video Coding. The goal is to conceal video information in several applications such as video surveillance and anonymous video communications to preserve privacy. This is achieved by performing a transform domain scrambling on both Key and Wyner-Ziv frames. More specifically, the sign of the scrambled transform coef...
متن کاملApplications of sequence space and SRG theories to distributed sample scrambling
In this paper, we consider how to apply the sequence space and the shift register generator (SRG) theories to distributed sample scrambling (DSS), which exhibits the best performance in scrambling of small frame-sized signals. We first consider how to predict scrambling sequences using their samples, which is a basic problem for a proper synchronization within the DSS systems. Then for DSS scra...
متن کاملTime to wave good-bye to phase scrambling: creating controlled scrambled images using diffeomorphic transformations.
To isolate the neural mechanisms associated with recognizing objects from those processing basic visual properties, control stimuli are required that contain the same perceptual properties as the objects but are unrecognizable. We demonstrate that conventional methods for generating control stimuli (phase scrambling, box scrambling, texture scrambling) yield poor controls because they dramatica...
متن کاملAn Efficient speech scrambling technique based on chaotic mapping and pseudorandom binary scrambling
To enhance the information security in network communications, this paper suggests a new speech scrambling algorithm based on random permutation, chaotic mapping and pseudo random binary scrambling.Firstly random permutation algorithm is used to shuffle the rows of the original speech followed by shuffling the rows using chaotic Bernoulli mapping. This produces an intermediary scrambled speech....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005