Video Test-Test Measurement-2-EEWORLD

Digital video test system based on Benetel's universal test platform

Benetel has extensive experience in RF and wireless design and test systems. The company is committed to providing high-quality, high-performance products to customers from all walks of life around the world. Among them, digital video testing occupies a large part of its business scope, so flexible, adaptable, and fully upgraded test systems......

Keywords： About Benetel Universal Test Digital Video Test System

Publish Time：2012-09-26

Research on Intelligent Network Image Monitoring System

Image monitoring has a wide range of applications in many fields. Currently, about 60% of the installed image monitoring systems use early cameras, televisions, and videotapes, and adopt wired analog video transmission technology. This solution has the disadvantages of low image quality, difficult storage of videotapes, easy deletion and modification of resources, and short life of the video recorder drum......

Keywords： Intelligent network Image monitoring system UDP Transmission protocol

Publish Time：2012-08-31

How to build a machine vision system

　　The composition of machine vision system --- the general machine vision system mainly includes information detection, acquisition system, image processing, display and intelligent decision-making modules, involving computer graphics, digital image processing, video information processing, pattern recognition, artificial intelligence theory, intelligent information processing, VLSI technology and other technologies......

Keywords： FPGA CPLD UART VHDL

Publish Time：2012-07-14

A multi-channel video synchronous acquisition solution

　　The vibration of the strip during the galvanizing process directly affects the thickness and uniformity of the zinc layer, which not only reduces product quality, but also leads to excessive consumption of zinc liquid and increases production costs. Whether it is to eliminate the vibration fundamentally by finding the vibration source, or to actively reduce vibration through electromagnets, etc., vibration detection is indispensable. In order to protect the surface of the strip, it cannot......

Keywords： Strip vibration detection video acquisition synchronous acquisition serial communication

Publish Time：2012-06-19

Design of CCD Video Signal Processing Circuit Based on XRD4460

　　1 Introduction CCD (Charge Coupled Device) is a new type of semiconductor large-scale integrated optoelectronic device developed in the 1970s. Because of its unique characteristics in the acquisition and recording of image information, it also has the advantages of small size, low power consumption, high resolution, high sensitivity, and can be used in a variety of applications....

Keywords： CCD correlated double sampling gain control signal processing

Publish Time：2012-06-09

Application of edge detection algorithm in medical ultrasound fluid lesion images

Abstract: Medical ultrasound images of liquid lesions often have several anechoic areas, which are "honeycomb-like" and have unclear boundaries. In order to clearly extract the edges of medical ultrasound images of liquid lesions and further provide a reliable basis for clinical diagnosis, several different edge detection algorithms are applied to medical ultrasound images of liquid lesions. The experimental results show that the classic edge detection algorithm cannot extract the edge of the image well, wh...

Keywords： Medical ultrasound images fluid lesions edge extraction Snake model

Publish Time：2012-06-07

Laser Interferometry Measurement of Lubricant Properties

　　Friction and lubrication play an important role in the industrial sheet metal forming process. Friction determines the type of deformation of the sheet metal and the degree of deformation without tearing. Proper lubrication can avoid direct contact between metals, reduce unnecessary wear of molds and workpieces, and reduce costs. At the same time, lubrication reduces......

Keywords： Video technology Lubricant properties Laser interferometry

Publish Time：2012-05-24

Application of resistance length measurement method in anchor quality inspection

Introduction Since its initial introduction into China, anchor support has been widely used in underground structural engineering; especially in weak and broken rock masses, it has unparalleled advantages over other support methods. However, anchoring is a concealed project, and it is difficult to manage and supervise during the construction process. The stability of the anchor system......

Keywords： Resistance length measurement method anchor quality inspection non-destructive testing

Publish Time：2012-04-17

Application of image recognition technology in precision testing of printed circuit boards

0 Introduction With the development of information industry and electronic technology, the manufacturing technology of PCB (Printed Circuit Board) circuit boards has been developed. The traditional optical microscope visual inspection method is no longer suitable for the precise inspection of PCB boards due to its own defects. Precision inspection based on image recognition is the development direction of modern measurement technology. ......

Keywords： Image recognition precision testing edge positioning

Publish Time：2012-04-17

RTOS video network detection design

In remote measurement and control systems, embedded systems have developed rapidly because of their superior stability and real-time performance over traditional platforms. This paper proposes a new embedded system design method based on DSP chips and VxWorks as operating systems. 1 Working principle of the test system The main task of the test system is to use DSP chips to process......

Keywords： RTOS video network detection embedded system

Publish Time：2012-03-17

Research on RTOS Video Network Detection System

In remote measurement and control systems, embedded systems have developed rapidly because of their superior stability and real-time performance over traditional platforms. This paper proposes a new embedded system design method based on DSP chips and VxWorks as operating systems. 1 Working principle of the test system The main task of the test system is to use DSP chips to process......

Keywords： Operating system video network detection

Publish Time：2012-03-15

Driver fatigue status detection method based on 3G video

Fatigue driving has become one of the main causes of traffic accidents. This paper proposes a method for detecting eye fatigue based on 3G video. The video frames are captured by DirectShow technology, the face is located using skin color clustering features, the eye is located and tracked based on grayscale information, and the Perclos method is used to detect eye fatigue....

Keywords： 3G video fatigue

Publish Time：2012-03-08

Image Acquisition and Processing System Based on ADSP-TS201S

Introduction With the continuous improvement of people's requirements for real-time signal processing and the rapid development of large-scale integrated circuits, the digital signal processor DSP chip, which is the core and symbol of digital signal processing, has been rapidly developed and applied. It can not only be widely used in communication systems, graphics/image processing, radar sonar, medical......

Keywords： ADSP-TS201S image acquisition processing system

Publish Time：2012-03-08

A Brief Discussion on Digital Television and Its Measurement

　　This article introduces the basic concepts and background of digital television, the main parameters and instruments of digital television testing, and the development of the digital television testing industry. I. Concept of digital television and its advantages 1. What is digital television? Digital television refers to the process of ......

Keywords： Digital TV bit error rate

Publish Time：2012-03-08

Universal decoding scheme for video decoder based on OMAP3

The hardware structure and software programming characteristics of the OMAP platform are analyzed; the usage skills of the dedicated image and graphics processing library (IMGLIB) provided by TI are summarized, and a partial comparison is made with OMAPl510; based on the popular video codec standards, a general decoding scheme for the video decoder based on OMAP3 is proposed. 1 OMAP ......

Keywords： OMAP3 video decoder universal decoding

Publish Time：2012-02-25

Application of Streaming Media in Network Video Monitoring System

Streaming media refers to the media that publishes audio and video multimedia content in real time in the form of data streams on the Internet, while streaming media technology is the technology of publishing multimedia data streams on IP networks. It has changed the dull image of traditional Internet, enriched the functions of Internet, and become a new media with strong appeal. It is widely used......

Keywords： Streaming media network video monitoring system

Publish Time：2012-02-23

Brief Analysis of Key Technologies in High-speed Railway Network Video Surveillance System

High-speed railway is different from general railway system. High-speed railway itself is a systematic and integrated large-scale project. The communication department alone involves more than 10 subsystems, including wired, data, transmission, dispatching, emergency communication, video surveillance, etc. High-speed railway is very different from ordinary railway or subway. For example, subway usually runs at a speed of 60 km/h......

Keywords： High-speed rail network video monitoring system

Publish Time：2012-02-22

Analysis and Comparison of Monitoring Image Transmission Methods

In the monitoring system, the transmission of monitoring images is a crucial link in the entire system. The choice of media and equipment to transmit images and other control signals will directly affect the quality and reliability of the monitoring system. At present, the media used to transmit image signals in the monitoring system mainly include coaxial cables, twisted pairs and optical fibers....

Keywords： Monitoring images transmission methods video amplifiers

Publish Time：2012-02-22

Analysis and implementation of TV video hardware decoding based on BT.656

According to the ITU2R BT. 656 TV video coding principle, the effective data of each frame of video image is extracted through hardware decoding and transmitted to the player for display. At the same time, the effective data of the video is filtered according to a certain ratio specification while keeping the video undistorted, and finally the video is scaled down......

Keywords： BT. 656 TV video hardware decoding

Publish Time：2012-02-20

Using Criteria to Implement Calibrated Image Quality Evaluation

　　Software tools to quantitatively analyze the performance of digital imaging systems can optimize overall image quality. From mobile phone cameras to camcorders, digital imaging technology is ubiquitous in people's lives. Despite the increasing number of consumer choices, there is still no standardized objective evaluation metric to quantify the overall performance of these devices......

Keywords： Calibrated image quality assessment mobile phone

Publish Time：2012-02-18