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Scalable Privacy in Multi-Task image Compression

Scalable Privacy in Multi-Task Image Compression

引用

IEEE visual communications and image processing (VCIP)

作者： Saeed Ranjbar Alvar Ivan V. Bajić School of Engineering Science Simon Fraser University Burnaby BC Canada

ISBN: (纸本)9781728173221

Learning-based compression systems have shown great potential for multi-task inference from their latent-space representation of the input image. In such systems, the decoder is supposed to be able to perform various analyses of the input image, such as object detection or segmentation, besides decoding the image. At the same time, privacy concerns around visual ana-lytics have grown in response to the increasing capabilities of such systems to reveal private information. In this paper, we propose a method to make latent-space inference more privacy-friendly using mutual information-based criteria. In particular, we show how organizing and compressing the latent representation of the image according to task-specific mutual information can make the model maintain high analytics accuracy while becoming less able to reconstruct the input image and thereby reveal private information.

关键词： Privacy visualization image segmentation image coding visual communication Object detection Multitasking

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Binocular visual Mechanism Guided No-Reference Stereoscopic image Quality Assessment Considering Spatial Saliency

Binocular Visual Mechanism Guided No-Reference Stereoscopic ...

引用

IEEE visual communications and image processing (VCIP)

作者： Jinhui Feng Sumei Li Yongli Chang Tianjin International Engineering Institute Tianjin University Tianjin China School of Electrical and Information Enginering Tianjin University Tianjin China

ISBN: (纸本)9781728173221

In recent years, with the popularization of 3D technology, stereoscopic image quality assessment (SIQA) has attracted extensive attention. In this paper, we propose a two-stage binocular fusion network for SIQA, which takes binocular fusion, binocular rivalry and binocular suppression into account to imitate the complex binocular visual mechanism in the human brain. Besides, to extract spatial saliency features of the left view, the right view, and the fusion view, saliency generating layers (SGLs) are applied in the network. The SGL apply multi-scale dilated convolution to emphasize essential spatial information of the input features. Experimental results on four public stereoscopic image databases demonstrate that the proposed method outperforms the state-of-the-art SIQA methods on both symmetrical and asymmetrical distortion stereoscopic images.

关键词： image quality visualization Three-dimensional displays visual communication image databases Convolution Stereo image processing

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Multi-camera system for placing the viewer between the players of a live sports match: Blind Review

Multi-camera system for placing the viewer between the playe...

引用

IEEE visual communications and image processing (VCIP)

We demonstrate a new capture system that allows generation of virtual views corresponding with a virtual camera that is placed between the players on a sports field. Our depth estimation and segmentation pipeline can reduce 2K resolution views from 16 cameras to patches in a single 4K resolution texture atlas. We have created a real time, WebGL 2 based, playback application that renders an arbitrary view from the 4K atlas. The application allows a user to change viewpoint in real time. Additionally, to interpret the scene, a user can also remove objects such as a player or the ball. At the conference we will demonstrate both the automatic multi-camera conversion pipeline and the real-time rendering/object removal on a smartphone.

关键词： visual communication image processing Pipelines Estimation Cameras Rendering (computer graphics) Real-time systems

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Big Data processing Technology in Film and Television Post Production

Big Data Processing Technology in Film and Television Post P...

引用

2020 International conference on Artificial Intelligence, Computer Networks and communications, AICNC 2020

作者： Xu, Qianqian School of Software Engineering Jiangxi University of Software Professional Technology Nanchang China

Nowadays, the wave of digitization, networking and informatization is sweeping the world, which makes the visual image become an important way of communication and transmission of global culture. The purpose of this paper is to analyze the application of big data processing technology in film and television post production. The distributed computing power of MapReduce is used to extract the content features of video images, construct corresponding indexes, and store and retrieve them in HBase database according to the indexes to form a big data processing platform for video images. This paper deeply discusses the framework related theory as the support of big data processing technology in film and television post production, analyzes the common algorithms in nonlinear editing system, discusses the mirror effect monorail and double track special effects in video special effects, and makes the realization effect of each kind of special effects in the space domain, and makes some special effects among them, The implementation of compressed domain is discussed. In this paper, through the application of experimental video big data processing technology to the film and television post production of various possibilities, and draw the following conclusions: in extreme cases, the stunt tree becomes a one-dimensional linear structure, using traditional parallel topology sorting, the device parallelism is 0, and using pipeline scheduling, because of breaking the sequence between frames, can play a relatively large parallelism. © Published under licence by IOP Publishing Ltd.

关键词： Big data

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People Detection and Tracking Using a Fisheye Camera Network

People Detection and Tracking Using a Fisheye Camera Network

引用

IEEE visual communications and image processing (VCIP)

作者： Tsaipei Wang Chih-Hao Liao Li-Hsuan Hsieh Arvin Wen Tsui Hsin-Chien Huang National Yang Ming Chiao Tung University Hsinchu Taiwan ROC Industrial Technology Research Institute Hsinchu Taiwan ROC

ISBN: (纸本)9781728173221

In this paper we study techniques for accurate detection, localization, and tracking of multiple people in an indoor scene covered by multiple top-view fisheye cameras. This is a rarely studied setting within the topic of multi-camera object tracking. The experimental results on test videos exhibit good performance for practical use. We also propose methods to account for occlusion by scene objects at different stages of the algorithm that lead to improved results.

关键词： Location awareness visual communication image processing Computational modeling Graphics processing units Cameras Real-time systems

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Towards Universal GAN image Detection

Towards Universal GAN Image Detection

引用

IEEE visual communications and image processing (VCIP)

作者： Davide Cozzolino Diego Gragnaniello Giovanni Poggi Luisa Verdoliva University Federico II of Naples Italy

ISBN: (纸本)9781728173221

The ever higher quality and wide diffusion of fake images have spawn a quest for reliable forensic tools. Many GAN image detectors have been proposed, recently. In real world scenarios, however, most of them show limited robustness and generalization ability. Moreover, they often rely on side information not available at test time, that is, they are not universal. We investigate these problems and propose a new GAN image detector based on a limited sub-sampling architecture and a suitable contrastive learning paradigm. Experiments carried out in challenging conditions prove the proposed method to be a first step towards universal GAN image detection, ensuring also good robustness to common image impairments, and good generalization to unseen architectures.

关键词： Training image coding visual communication Forensics Detectors Robustness

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Alpha-trimmed Mean Filter and XOR based image Enhancement for Embedding Data in image

Alpha-trimmed Mean Filter and XOR based Image Enhancement fo...

引用

IEEE visual communications and image processing (VCIP)

作者： S. M. Ammar Alam Moid Ul Huda Muhammad Farhan Dhanani School of Science & Engr. Habib University Karachi Pakistan

ISBN: (纸本)9781728173221

In the age of digital content creation and distribution, steganography, that is, hiding of secret data within another data is needed in many applications, such as in secret communication between two parties, piracy protection, etc. In image steganography, secret data is generally embedded within the image through an additional step after a mandatory image enhancement process. In this paper, we propose the idea of embedding data during the image enhancement process. This saves the additional work required to separately encode the data inside the cover image. We used the Alpha-Trimmed mean filter for image enhancement and XOR of the 6 MSBs for embedding the two bits of the bitstream in the 2 LSBs whereas the extraction is a reverse process. Our obtained quantitative and qualitative results are better than a methodology presented in a very recent paper.

关键词： Steganography visual communication image enhancement

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An intricate spectrogram processing in speech enhancement using machine learning with cloud computing

An intricate spectrogram processing in speech enhancement us...

引用

International conference on image Information processing

作者： Yenna Geetha Reddy G Mahendran Ameer Al-Khaykan Omar A. Alkawak S. A. Kalaiselvan A. Priya Department of Computer Science and Engineering MAlla Reddy Engineering College for Women (UGC Autonomous)Kompally Secunderabad Telangana India Department of Mechancal Engineering R.M.K Engineering Collegekavaraipettai Chennai Tamil Nadu India Department of Electronic and Communications Engineering University of Kufa Najaf Iraq Department of Air Conditioning and Refrigeration Technical Engineering Al-Mustaqbal University College Hilla Babil Iraq Department of Computer Science and Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Science (SIMATS) Chennai Tamil Nadu India School of Architecture Koneru Lakshmaiah Educational Foundation Guntur Andhra Pradesh India

ISBN: (数字)9798350371406

ISBN: (纸本)9798350371413

The spectrogram is defined as the visual representation of the signal strength with a particular interval of time regarding frequencies in the appropriate waveform. It is demonstrated using the Fourier transform. It is illustrated in a three-dimensional plot of signal composed with amplitude versus frequency and time. They are classified as long signal sections and short signal sections with filters. It demonstrates the consecutive spectacle of the sound signal at a particular interval of time. The time-frequency representation of audio signals is obtained through spectrograms. This helps in the understanding of the speech data. Machine learning plays an important role in the identification of the relevant features in the spectrogram. The intricate patterns in the time and frequency domains are represented through CNN and RNN. These models are trained and tested through a large dataset which includes both clean and noisy speech samples. This helps to learn complex interrelationships and patterns associated with varied environmental conditions and interference systems. The computational demands of these systems are handled through the cloud computing techniques. They provide a platform for effective solutions for performing real-time interference. These cloud services provide various collaborations to numerous models to achieve desired outcomes. The proposed system provides higher adaptability in varied environmental and noisy profiles. Thus the integration of cloud computing with machine learning provides real-time processing with a natural seamless user experience.

关键词： Cloud computing Time-frequency analysis visualization Computational modeling Machine learning Interference Speech enhancement

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RDPlot – An Evaluation Tool for Video Coding Simulations

RDPlot – An Evaluation Tool for Video Coding Simulations

引用

IEEE visual communications and image processing (VCIP)

作者： Jens Schneider Johannes Sauer Mathias Wien Institut für Nachrichtentechnik RWTH Aachen University Germany Lehrstuhl für Bildverarbeitung RWTH Aachen University Germany

ISBN: (纸本)9781728173221

RDPlot is an open source GUI application for plotting Rate-Distortion (RD)-curves and calculating Bjøntegaard Delta (BD) statistics [1]. It supports parsing the output of commonly used reference software packages, parsing *.csv-formatted files, and *.xml-formatted files. Once parsed, RDPlot offers the ability to evaluate video coding results interactively. Conceptually, several measures can be plotted over the bitrate and BD measurements can be conducted accordingly. Moreover, plots and corresponding BD statistics can be exported, and directly integrated into LaTeX documents.

关键词： Video coding visual communication Software packages image processing Bit rate Rate-distortion Graphical user interfaces

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No-Reference Stereoscopic image Quality Assessment Considering Binocular Disparity and Fusion Compensation

No-Reference Stereoscopic Image Quality Assessment Consideri...

引用

IEEE visual communications and image processing (VCIP)

作者： Feng Jinhui Sumei Li Yongli Chang Tianjin International Engineering Institute Tianjin University Tianjin China School of Electrical and Information Enginering Tianjin University Tianjin China

ISBN: (纸本)9781728173221

In this paper, we propose an optimized dual stream convolutional neural network (CNN) considering binocular disparity and fusion compensation for no-reference stereoscopic image quality assessment (SIQA). Different from previous methods, we extract both disparity and fusion features from multiple levels to simulate hierarchical processing of the stereoscopic images in human brain. Given that the ocular dominance plays an important role in quality evaluation, the fusion weights assignment module (FWAM) is proposed to assign weight to guide the fusion of the left and the right features respectively. Experimental results on four public stereoscopic image databases show that the proposed method is superior to the state-of-the-art SIQA methods on both symmetrical and asymmetrical distortion stereoscopic images.

关键词： image quality visual communication image databases Stereo image processing Streaming media Feature extraction Distortion

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