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  • 1
    视频带宽
    [hanhao][2017-01-10]
    视频带宽(Video BW),指每秒钟电子枪扫描过的总像素数即单位时间每条扫描线上面显示频点数总和。像素时钟(点时钟)可以计算为“水平分辨率(总数)×垂直分辨率(总数)×场频(画面刷新次数)”与行频相比,带宽更具有综合性,也更直接地反映显示器性能。大家不要混淆视频带宽和像素时钟。 视频带宽反映的是频谱分析仪接收机中位于包络检波器之后的视频滤波器的带宽。这种滤波器也影响显示的噪声,但与分辨带宽的方式不同。在视频滤波器中,噪声的平均电平保持不变但噪声的变化减少。因此,视频滤波器的作用是“平滑”信号的噪声。频谱仪显示的结果是噪声基底压缩为一条单薄的线迹,而线迹的位置保持不变。因此,改变VB......
  • 2
    A Novel Hardware Architecture With Reduced Internal Memory for Real-Time Extraction of SIFT in an HD Video
    [2016-01-01]
    Scale-invariant feature transform (SIFT) includes complex computations that require hardware implementation for real-time operations. Previous works on SIFT hardware acceleration used a large amount of internal memory, which limited a wider use of SIFT. This paper proposes a new SIFT hardware archit......
  • 3
    A Novel Hardware Architecture With Reduced Internal Memory for Real-Time Extraction of SIFT in an HD Video
    [2016-01-01]
    Scale-invariant feature transform (SIFT) includes complex computations that require hardware implementation for real-time operations. Previous works on SIFT hardware acceleration used a large amount of internal memory, which limited a wider use of SIFT. This paper proposes a new SIFT hardware archit......
  • 4
    A Novel Hardware Architecture With Reduced Internal Memory for Real-Time Extraction of SIFT in an HD Video
    [2016-01-01]
    Scale-invariant feature transform (SIFT) includes complex computations that require hardware implementation for real-time operations. Previous works on SIFT hardware acceleration used a large amount of internal memory, which limited a wider use of SIFT. This paper proposes a new SIFT hardware archit......
  • 5
    Video Coding Technique using MPEG Compression Standards
    [2013-01-01]
    Digital video compression technologies have become part of life, in the way visual information is created, communicated and consumed. Some application areas of video compression focused on the problem of optimizing storage space and transmission bandwidth (BW). The two dimensional discrete cosine tr......
  • 6
    Improved instrumentation for photodynamic fluorescence detection of cancer
    [2019-12-24]
    A fluorescence-detection technique for cancer in human hollow organs has been developed based on endoscope-assisted two-wavelength excitation of the polyporphyrin Photofrin II in tissue. Due to the photosensitizing capability of the fluorescent tumormarket the applied dose is reduced to 0.4 mg/kg bw......
  • 7
    Video summarization and personalization for pervasive mobile devices
    [2019-12-24]
    We have designed and implemented a video semantic summarization system, which includes an MPEG-7 compliant annotation interface, a semantic summarization middleware, a real-time MPEG-1/2 video transcoder on PCs, and an application interface on color/black-and-white Palm-OS PDAs. We designed a video ......
  • 8
    A novel PON based UMTS broadband wireless access network architecture with an algorithm to guarantee end to end QoS
    [2020-11-18]
    "In this paper we proposes a novel Passive Optical Network (PON) based broadband wireless access network architecture to provide multimedia services (video telephony, video streaming, mobile TV, mobile emails etc) to mobile users. In the conventional wireless access networks, the base stations (Node......
  • 9
    Efficient error frame loss recovery model for scalable video coding (SVC)
    [2020-11-18]
    Video processing algorithms tend to improve over time in terms of image quality while increasing in its inter and intra dependency. Frames inter prediction exploits temporal similarities across a sequence of consecutive frames, while intra prediction exploits the macroblock's spatial similarities in......
  • 10
    A 4.2-mW 10-MHz BW 74.4-dB SNDR Continuous-Time Delta-Sigma Modulator With SAR-Assisted Digital-Domain Noise Coupling
    [2018-01-01]
    This paper introduces a high-order continuous-time (CT) delta-sigma modulator (DSM) that applies digital-domain noise coupling (DNC) based on the structural advantages of the successive-approximation register (SAR) analog-to-digital converter (ADC), which makes the implementation of second-order noi......
  • 11
    A 0.05pJ/Pixel 70fps FHD 1Meps Event-Driven Visual Data Processing Unit
    [2020-11-18]
    An Event-driven visual data Processing Unit (EPU) exploits temporal redundancy in stationary camera video streams to localize motion-based Regions-of-Interest (RoI), saving compute FLOPs and memory bandwidth (BW) for Deep Learning (DL) based object detection. The proposed EPU supports FHD frames at ......
  • 12
    A novel fair queuing algorithm for hybrid wired/wireless architecture with wireless compensation to provide end-to-end quality of service support
    [2020-11-18]
    "We proposed novel hybrid FSO/RF architecture1 to provide broadband wireless access to end users. To provide quality of service (QoS) bounds for different types of traffic(voice, video and data) we proposed some fair queuing algorithms2,3 ,but because of the hybrid wired and wireless links there can......
  • 13
    Sparse Directed Graph Learning for Head Movement Prediction in 360 Video Streaming
    [2020-11-18]
    High-definition 360 videos encoded in fine quality are typically too large in size to stream in its entirety over bandwidth (BW)-constrained networks. One popular remedy is to interactively extract and send a spatial sub-region corresponding to a viewer’s current field-of-view (FoV) in a head-mounte......
  • 14
    Open vSwitch使用案例扩展实验
    [2015-12-01]
    一、实验目的 通过python脚本调用OpenvSwitch命令; 学习Mininet基于python脚本创建拓扑的实现; 进一步深度使用“ovs-vsctl”命令直接控制Open vSwitch。 二、实验原理 在SDN环境中,控制器可以通过对交换机下发流表操作来控制交换机的转发行为。在本实验中,使用Mininet基于python的脚本,调用“ovs-vsctl”命令直接控制Open vSwitch。使用默认的交换机泛洪规则,设置更高的优先级规则进行预先定义IP报文的转发。在多个交换机中通过设置不同TOS值的数据包将通过不同的方式到达目的地址,验......
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