A Method of Codec Comparison and Selection for Good Quality Video Transmission Over Limited-Bandwidth Networks

Klink, Janusz

doi:10.3390/s21134589

Cited by 7 publications

(3 citation statements)

References 41 publications

(51 reference statements)

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“…Striking a balance between video quality and bandwidth requirements is critical for any compression method, and the added quality metrics will also support further relevant studies, as shown as an example by a recent work [63].…”

Section: Data Compression and Objective Quality Assessment Methodologymentioning

confidence: 75%

KULF-TT53: A Display-Specific Turntable-Based Light Field Dataset for Subjective Quality Assessment

Javidi,

Martini,

Kara

2023

Electronics

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Light field datasets enable researchers to conduct both objective and subjective quality assessments, which are particularly useful when acquisition equipment or resources are not available. Such datasets may vary in terms of capture technology and methodology, content, quality characteristics (e.g., resolution), and the availability of subjective ratings. When contents of a light field dataset are visualized on a light field display, the display system matches the received input to its output capabilities through various processes, such as interpolation. Therefore, one of the most straightforward methods to create light field contents for a specific display is to consider its visualization parameters during acquisition. In this paper, we introduce a novel display-specific light field dataset, captured using a DSLR camera and a turntable rig. The visual data of the seven static scenes were recorded twice by using two settings of angular resolution. While both were acquired uniformly within a 53-degree angle, which matches the viewing cone of the display they were captured for, one dataset consists of 70 views per content, while the other of 140. Capturing the contents twice was a more straightforward solution than downsampling, as the latter approach could either degrade the quality or make the FOV size inaccurate. The paper provides a detailed characterization of the captured contents, as well as compressed variations of the contents with various codecs, together with the calculated values of commonly-used quality metrics for the compressed light field contents. We expect that this dataset will be useful for the research community working on light field compression, processing, and quality assessment, for instance to perform subjective quality assessment tests on a display with a 53-degree display cone and to test new interpolation methods and objective quality metrics. In future work, we will also focus on subjective tests and provide relevant results. This dataset is made free to access for the research community.

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Section: Data Compression and Objective Quality Assessment Methodologymentioning

confidence: 75%

KULF-TT53: A Display-Specific Turntable-Based Light Field Dataset for Subjective Quality Assessment

Javidi,

Martini,

Kara

2023

Electronics

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“…In today's marine operations, video transmission has become the mainstream [1]. Underwater video transmission can improve the efficiency.…”

Section: Introductionmentioning

confidence: 99%

Efficient video classification of marine organisms through intra and inter prediction

Feng

Zhang

2023

International Conference on Signal Processing, Computer Networks, and Communications (SPCNC 2022)

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The purpose of this paper is to improve the efficiency of video recognition process and save computational data. According to the encoding and decoding of video, we can know that not every part of the information of each frame is valid in video classification. There are a lot of invalid information, which takes up computing space. Therefore, this paper proposes an efficient video classification and prediction method based on reinforcement learning intra prediction. The process of eliminating time redundancy is further added, and then the video frames with low value are ignored, which further improves the computational efficiency. This method extracts the key frames from the marine biological video, and then focuses on the key image areas of the key frames, so as to reduce the network computing overhead.

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“…High data volumes, especially for multimedia content such as videos or high-resolution images, can strain network infrastructure and result in slow or unreliable data transfer. Processing and rendering digital media content can consume significant energy, leading to reduced device runtime, while resource-constrained devices may struggle with the processing power required to efficiently encode or decode high-resolution or high-bitrate video, audio, or imaging formats [2,3].…”

Section: Introductionmentioning

confidence: 99%

New Systolic Array Algorithms and VLSI Architectures for 1-D MDST

Chiper

Cracan

2023

Sensors

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In this paper, we present two systolic array algorithms for efficient Very-Large-Scale Integration (VLSI) implementations of the 1-D Modified Discrete Sine Transform (MDST) using the systolic array architectural paradigm. The new algorithms decompose the computation of the MDST into modular and regular computational structures called pseudo-circular correlation and pseudo-cycle convolution. The two computational structures for pseudo-circular correlation and pseudo-cycle convolution both have the same form. This feature can be exploited to significantly reduce the hardware complexity since the two computational structures can be computed on the same linear systolic array. Moreover, the second algorithm can be used to further reduce the hardware complexity by replacing the general multipliers from the first one with multipliers with a constant that have a significantly reduced complexity. The resulting VLSI architectures have all the advantages of a cycle convolution and circular correlation based systolic implementations, such as high-speed using concurrency, an efficient use of the VLSI technology due to its local and regular interconnection topology, and low I/O cost. Moreover, in both architectures, a cost-effective application of an obfuscation technique can be achieved with low overheads.

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A Method of Codec Comparison and Selection for Good Quality Video Transmission Over Limited-Bandwidth Networks

Cited by 7 publications

References 41 publications

KULF-TT53: A Display-Specific Turntable-Based Light Field Dataset for Subjective Quality Assessment

KULF-TT53: A Display-Specific Turntable-Based Light Field Dataset for Subjective Quality Assessment

Efficient video classification of marine organisms through intra and inter prediction

New Systolic Array Algorithms and VLSI Architectures for 1-D MDST

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