Video Test-Test Measurement-EEWORLD

1. Understanding Composite Video Signals A composite video signal is a signal in which all the components needed to create a video signal are combined in the same signal. The three main components that make up a composite signal are as follows: ● Luminance signal - contains information about the intensity (brightness or darkness) of the video image ● Color signal - contains information about the color of the video image......

Keywords： Video signal measurement horizontal sync vertical sync pixel clock frequency

Publish Time：2014-10-08

High-definition video detection vehicle violation evidence collection system

　　The biggest difference between the off-site traffic enforcement model and the traditional law enforcement model is that once a violation occurs, visual data can be recorded. The perpetrator does not immediately know that he has been recorded at the scene of the violation, but only accepts investigation and acceptance according to procedures after the visual data has been reviewed and confirmed as evidence of administrative punishment......

Keywords： License plate recognition traffic violation evidence collection system TCP IP protocol video detection

Publish Time：2014-10-08

Rohde & Schwarz's broadcast test system BTC successfully integrates D-Book test suite

In cooperation with Rohde & Schwarz, the Digital Television Group Broadcast Conformance Test Laboratory (DTG Testing) has successfully tested the R&S BTC and R&S AVBrun D-Book test suites. The industry now has an extremely compact test solution certified by DTG Testing. D-Book introduces the UK terrestrial digital......

Keywords： DTG Testing R&S BTC Broadcasting Testing System D-Book

Publish Time：2014-09-18

Application of machine vision in automatic flaw detection of large workpieces

1 Introduction Machine vision is to use machines to replace human eyes for measurement and judgment. Machine vision system refers to the software and hardware equipment that converts the captured target into image signals through machine vision products and then transmits them to special information processing devices for further processing. Because machine vision systems can quickly obtain a large amount of information, and......

Keywords： Machine vision large workpieces automatic flaw detection

Publish Time：2013-05-30

High-speed image acquisition technology based on USB camera

Abstract: In the image acquisition system, the most core technology is the acquisition and processing of real-time images. Image acquisition is the basis for image processing, image compression, and image recognition. The image acquisition speed and quality directly affect the overall performance of the system. Therefore, the research on image acquisition systems has important practical significance and broad application prospects. This project realizes the acquisition and processing of high-speed images th...

Keywords： USB camera discrete cosine transform DCT histogram equalization

Publish Time：2013-05-18

Technological Advances in Optical and Video Measurement Instruments

In the past few decades, few other testing instruments have been as quick and easy to use as optical projection comparators. Optical projection comparison measurement is to compare the enlarged outline of the workpiece projected on the projection screen with a transparent film with a proportionally enlarged correct shape and tolerance band of the workpiece, so as to directly determine whether the workpiece is qualified or not......

Keywords： Optical projection video measurement projection comparator

Publish Time：2013-05-03

Machine Vision Inspection System

1. Introduction Modern industrial automation production involves a variety of inspection, production monitoring and parts identification applications, such as dimensional inspection of batch processing of automotive parts and integrity inspection of automatic assembly, automatic positioning of components in electronic assembly lines, character recognition on ICs, etc. Usually this kind of highly repeatable and intelligent......

Keywords： Machine vision detection system dynamic detection

Publish Time：2013-04-09

Machine vision enables can lid defect detection

Rexam Beverage CansAmericas, the world's largest canning company, pays close attention to production details. At its plant in Valparaiso, Illinois, the aluminum can lids used on two-piece beverage cans are carefully inspected at high speed to remove any defective products. Although the system can detect defects......

Keywords： Machine vision can lid defect detection

Publish Time：2013-04-09

Application of machine vision inspection in electronic connector manufacturing industry

Guaranteeing that stamped parts are defect-free In the electronic connector manufacturing industry, the speed of stamping connector pins is extremely high. Until recently, machine vision technology has been difficult to match the high-speed requirements of stamping quality inspection. Achieving 100% online inspection of connector (pin) stamping quality has always been......

Keywords： Machine vision inspection electronic connectors manufacturing industry

Publish Time：2013-04-09

Analysis of machine vision color imaging applications

Introduction Machine vision has been widely used in various industries around the world, including semiconductors, electronics, automobiles, food, medicine, textiles, and transportation. In China, with the improvement of supporting infrastructure and the accumulation of technology and capital, all walks of life have a wide demand for industrial automation and intelligence using image and machine vision technology......

Keywords： Machine vision color imaging image processing

Publish Time：2013-04-06

Principle and design of infrared imaging detection of SF6 gas

Abstract: The application of laser infrared optical imaging technology in detecting SF6 gas leakage has important practical significance. The grating-adjustable co2 laser is used to make the output spectrum just within the SF6 absorption range, and the infrared detector can receive the reflected spectrum to display the gas leakage status. The absorption rate of SF6 gas to the infrared spectrum centered at 10.56μm is very high, which requires the laser output to have good stability and output a single freque...

Keywords： Infrared imaging detection SF6 gas detection

Publish Time：2013-03-15

Discussion on the method of intelligent ultrasonic detection of ship structure welds

By using a computer-controlled array ultrasonic probe to simplify the movement of the probe during ultrasonic flaw detection, the automation and intelligence of ultrasonic flaw detection can be achieved. The ultrasonic flaw detection process forms an original flaw detection record. On the basis of determining the nature, quantity, size, shape, location, etc. of the welding defects, the flaw detection results are more intuitive and reliable, and the labor intensity is reduced. ...

Keywords： Ultrasonic detection of ship structure and welds

Publish Time：2013-03-15

Laser Vision Systems in the Pipe Welding Industry

Laser vision technology started in the 1980s. As the technology matures, many additional functions have been developed, such as adaptive control based on joint geometry. At the same time, the technology is widely used, especially in the welded pipe industry, such as TIG welded pipes, straight seam submerged arc welded pipes and spiral welded pipes. Basic Principles Laser vision systems are generally......

Keywords： Welded pipe industry laser vision system adaptive control

Publish Time：2013-03-15

Elastic film visual inspection system

Manual inspection of elastic bands that are four feet wide and eight feet in circumference is difficult because human inspectors lack an objective and reliable way to determine the presence or absence of defects. Generally speaking, defects are areas that are darker or lighter than the surrounding material. Invotec Engineering in Miamisburg was......

Keywords： Elastic film Visual inspection system Machine vision application system

Publish Time：2013-02-26

Application of machine vision system in modern packaging industry

The concept of machine vision is introduced and mainly applied in modern industrial automation production, involving a variety of inspection, measurement and part recognition applications, such as automotive parts size inspection and automatic assembly integrity inspection, automatic positioning of components in electronic assembly lines, printing quality inspection of beverage bottle caps, barcodes on product packaging and......

Keywords： Machine Vision System Modern Packaging Industry

Publish Time：2013-02-25

Image quality analysis for real-time measurement of objective video quality

Digital audio and video provide consumers with stereo and high-definition audio experience, and related tests have changed from traditional static, single-frame image analysis to dynamic testing and image quality analysis. Although single-frame image analysis can provide signal timing, color depth, line synchronization, and more useful information, compression/decompression algorithms......

Keywords： Video quality real-time measurement image quality analysis

Publish Time：2013-01-30

Application of machine vision in online inspection system of cloth production

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Keywords： Machine vision cloth production online inspection system

Publish Time：2013-01-30

Image Quality Analysis: Real-time Measurement of Objective Video Quality

Overview Digital audio and video provide consumers with stereo and high-definition audio experience, and related tests have changed from traditional static, single-frame image analysis to dynamic testing and image quality analysis. Although single-frame image analysis can provide signal timing, color depth, line synchronization, and more useful information, compression/decompression......

Keywords： Image quality real-time measurement video streaming

Publish Time：2013-01-15

Working principle of VGA video transmission technology

VGA signal amplifier VGA signal transmission is a hot topic in recent video signal transmission. Various transmission methods have attracted the attention of many engineers, and various publicity have also blurred the normal judgment of engineers. As a manufacturer of twisted pair transmission, we will make a small discussion on the development and principle of VGA transmission, hoping to clarify the......

Keywords： VGA video transmission technology signal amplifier

Publish Time：2012-11-03

Fast motion estimation algorithm based on H.264 video compression

H.264 is one of the most important international standards for data compression coding. Fast motion estimation algorithms have always been a hot topic in video compression research. This paper uses a diamond cross search algorithm based on the original algorithm to solve the problem that some fast estimation algorithms determine the search direction too early, easily fall into the local minimum point, and lose the search accuracy......

Keywords： H.264 video compression fast motion estimation algorithm

Publish Time：2012-10-26