Line Array Cameras Knowledge
A line array camera was a camera that used a line array image sensor. The image sensor was mainly a CCD-based camera. In 2012, a line array LCD image sensor appeared on the market, but the line array CCD-based camera was still the mainstream. The line array image sensor was divided into two types, namely, a color camera and a color camera. In principle, a line array industrial camera was a special form of a two-dimensional image sensor. When it worked, it would shoot moving objects, convert the captured optical signals into digital signals, store and process them, and finally generate a two-dimensional image. Its working process includes: the optical system uses a lens to image an object on a linear array chip composed of light sensitive elements; during the photo-electric conversion, the picture elements generate different voltage signals according to the brightness, and the complete image is obtained after integration; then the data acquisition card transforms the simulated electric signal into a digital signal and stores it in a computer; finally, the computer processes and analyses the image to obtain the detection and measurement results. The common parameters of the line array industrial camera are as follows: 1. ** Line frequency **: The camera's shooting speed is usually defined by the number of images taken per second. It is a special frame rate. It is targeted at a few rows of pixels-based CMOS. The camera's shooting speed can reach tens of thousands to hundreds of thousands of images per second. It is usually expressed in Kilosecond. 2. ** Line height **: In actual application, an image is captured after every X line. X line is the line height, which is the "height" of the image. 3. ** Triggering method **: Including line triggering and frame triggering. Line trigger was a line of images taken by the line array camera after receiving the line trigger signal. It was suitable for scenes with uneven motion speed or special imaging techniques. The frame trigger was a frame of images taken after receiving the frame trigger signal (the line height could be customized). It was suitable for shooting objects with relatively uniform motion. 4. ** Perfect line frequency **: Only when matched with the movement speed can a clear image be taken. The ideal line frequency is different for each application. In terms of sensors, most of them used MOS in the 1970s. At the end of the 1970s, CCDs began to develop rapidly and became mainstream. In the mid-1980s, mos appeared. In the early days, the image acquisition speed of CCDs was lower than that of mos. Before 2010, the price of mos sensors was higher than that of CCDs. After that, major camera manufacturers vigorously developed mos cameras and obtained many practical applications. In the future, mos sensors might become the mainstream of line array cameras. There were differences in image acquisition speed and sensitivity between the two. The resolution of a line array camera was mostly only reflected in the horizontal direction. For example, a 2048-pixel-long line array camera had 2048 horizontally, and most of the vertical direction was 1 (except for the cameras of the RGH and the PDI). Its important parameters also included resolution (number of resolution), MAX DATA RATE (the maximum amount of data that the camera can take per second), and so on. For example, a camera with 8192*1 and a data rate of 160Mhm would have a line frequency of 160M/8192 = 19000line/second. In addition, the choice of camera would affect the overall cost of the equipment. A large number of cameras required a large lens, a large amount of data required a data cable with a high transmission rate, an image processing card, and high requirements for computing and computers. Read more exciting novels for free
Basic knowledge of cameras, sensitivity
The sensitivity, also known as the Iso-value, was a measure of the sensitivity of the film (in a film camera, it depends on the film used) or the light-sensitive element of a digital camera to light. In May 1981, the International Organization for Standardisation, which was based on the ADC and SIN systems, unified the ADC/SIN system, which became the standard of the global photography industry. In the film era, the USB was an internationally unified indicator to measure the speed of film used in traditional cameras. The value was fixed and determined by the properties of the film itself. When buying the film, the packaging would have an USB value label, such as USB 100, USB 200, etc. In the digital era, digital cameras used the concept of film sensitivity to define the parameters of the USB, and its value could be freely set within a certain range. The sensitivity level was in a multiplying relationship, such as the sensitivity of 100, 200, 400, 800, 1600, etc. The sensitivity difference between adjacent ISOs was doubled, and the higher the number, the higher the sensitivity. Generally speaking, the sensitivity of the light was low below 800 (2017), medium between 800 - 6400 (2017), and high above 6400 (2017). The higher the camera's IS value, the higher the sensitivity, and the stronger the sensitivity of the sensor to light. Under the same aperture and shutter, the photo taken would be brighter. On the contrary, the lower the IS value, the lower the sensitivity, and the darker the photo. At the same time, the sensitivity directly affected the exposure, depth, brightness, and noise level of the photo. Usually, when the sensitivity is lower (such as below 400), the picture is relatively pure. As the sensitivity increases (above 400), the noise and mottled color will gradually increase. For example, the noise and mottled color increase at the turning point of the 400, 800, and 1600. However, with the development of science and technology, the newly released high-end cameras may still have strong image performance at high Iso (such as 6400 and above). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Xuanzhen Six-line Array Plate
The Xuanzhen Six-Line Plate was a Zhouyi communication application platform for enthusiasts and practitioners. On this platform, the six lines and eight characters were unified into one platform. These two traditional prediction methods covered the prediction of one event and one question and the prediction of good or bad luck in one's life. The interface was simple and easy to use. It could solve questions for those who wanted to test and make it convenient for those who liked to learn to communicate. At the same time, the platform had a variety of functions, such as allowing practitioners to gain more practical experience, allowing enthusiasts to gain more learning opportunities, allowing masters (Yi Xue enthusiasts) who entered the platform to get accurate feedback, and obtaining funding for research on Yi Xue, thus promoting the scientific development of Yi Xue. The traditional method of arranging the six lines was to put three copper coins in the hands of the fortune-teller, hold them tightly, think about the thing to be measured, and let the measured information integrate into the copper coin. After shaking the copper coin with his hands, he put it into the hexagram plate, and threw it six times to form a hexagram. Then, after the hexagram, he combined it with the line words of the Book of Changes and the dry and branch of time to predict the development process and outcome of things. In fact, the prediction of the six lines was a method and method that the ancients had summarized to explore the laws between man and nature. Other than copper coins, bamboo slips, leaves, and other things that could be divided into positive and negative, yin and yang, could also be used as a prediction tool. During the operation, he would randomly throw six times and record the results of each throw. Then, through the arrangement of the six lines and the interpretation of the six lines, he would establish the connection between things, people, and nature, and thus explore the development law of things. In other words, he would establish the connection between people, events, and the laws of nature (date, time, environment, five elements), and use this to analyze the development law and direction of things. The novel 'Hao Tian Ji: Talisman Array Master' is equally exciting. Everyone is welcome to click and read it!
How to use the line array camera and the scanner together
When a line array camera was used in conjunction with an scanner, there were many aspects involved: ** 1. In terms of hardware connection ** 1. ** Connection Method ** - There were specific connections for different models of the Encoders and Line Array Cameras. For example, there were corresponding connection methods for the OMMON E6B2-CWZ1X Encoders, Xumin-MCLMX4 acquisition cards, and LA-GC02K05B Giga network port line array cameras. - The parameters such as the output form of the scanner would affect the connection. For example, some matrixes had a linear driver output, and the corresponding line color should be connected to the correct terminal according to the camera's tuning manual. 2. ** Build the hardware environment ** - When building a hardware environment that included a line array camera and an eraser, it was necessary to minimize the installation errors of the camera and light source. This would help ensure the image quality. For example, it was necessary to ensure that the thin light strip projected by the line light source on the target to be inspected should be parallel to the camera chip in the length direction. ** 2. Calculation and Setting of the parameters ** 1. ** Line frequency related ** - The line frequency was the speed of the line array camera, and it was crucial to ensure that the captured image was not distorted. Take the LA-CC-08K05B line array camera with the CameraLink interface, the Xtion-MCLMX4 acquisition card, and the OMMON E6B2-CWZ1X scanner as an example. If you want to ensure that the scanned image is not distorted, you need to ensure that the horizontal resolution is equal to the vertical resolution. The horizontal field of view, the actual horizontal resolution, the line speed of the production line, and other parameters are used to calculate the value that the line frequency should set. This number was actually the number of pulses per second triggered by the scanner installed on the production line. - After the wire connection between the external trigger of the camera and the scanner was completed, a series of settings related to the line frequency had to be made, such as in the MVS client of the Haikang camera. For example, in the acquisition control, turn on the line trigger mode (LineStart), and perform related operations under the trigger source (TriggerSource) setting options. When the line frequency value of the image captured by the camera without distortion is lower than the input pulse frequency of the trigger signal, the image will be stretched; when this value is higher than the input frequency of the trigger signal, the image will be compressed. At this time, the two should be consistent by setting the frequency doubling and frequency division of the frequency changer. 2. ** Encoder-related settings ** - For example, in the MVS client of the Haikang camera, the settings of the Encoders are as follows: (EncoderControl) option to set the Encoderpicker (EncoderSeparator) is Encoder0, EncoderSource A (EncoderSource A) Choose Line0, EncoderSource B (EncoderSource B) select Line1, etc. If the product needs to be photographed when it is reversed, the Encoder-trigger mode can select Any Direction, and the Encoder-counter Mode can select Follow Direction. At the same time, it should be noted that if the source A and source B of the Encoders select the same signal source, the Encoders will not output a signal. ** 3. The trigger mechanism ** 1. ** Line triggered ** - The line array camera had a line trigger mode. After receiving the line trigger signal, the line array camera would take a line of images. Line trigger was suitable for scenes where the speed of movement was not uniform or required some special imaging techniques, such as long and short exposure HVR, time-sharing stroboscopic, etc. 2. ** Frame-triggered ** - In the frame trigger mode, the line array camera would take a frame of image after receiving the frame trigger signal (the line height of the image here could be customized). After the frame was triggered, the line array camera would continue to take pictures at the set line frequency until it reached the specified line height. It was more suitable for shooting objects that moved at a constant speed. ** 4. Image synchronization (some cases)** - For example, in the image synchronization method of Jiuzhi Ocean's linear array panoramic thermal imaging camera, the zero-position signal Z phase and the increment signal A phase and B phase of the scanner were collected. After the signal was adjusted and divided by the CPU, a differential synchronization signal was output. After the digital imaging board received the synchronization signal, the frame synchronization number was superimposed on the image and then the video was output. When the image was collected, the panoramic image was stitched according to the frame number. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
HD Cameras and Cameras
A high-definition camera was a digital device that could capture high-quality, high-definition images. Its image resolution could reach 1280*720 (corresponding to 720 lines of interlaced scanning) or 1920*1080 (corresponding to 1080 lines of interlaced scanning). High-definition cameras were divided into two types: the early HD video cameras, which used magnetic tape as the recording medium, and the AVCHD video cameras, which had a variety of recording media such as discs, flash memory, and hard disks. As for the camera, the reference materials did not specifically give the concept of the camera and other related content, but from the mention of some video cameras, hand-held cameras and other equipment, it can be inferred that they have similarities with the function of the camera. They are both used for shooting and recording images, but there may be differences in the use of the scene, professional level, functional focus, etc. For example, some video cameras might be equipped with specific lenses, microphones, and other equipment to meet different shooting needs. For example, the SonyPXW-X280 video camera had 17x zoom and wireless functions, and the PXW-Z150 hand-held 4K camera was equipped with an omni-directional three-dimensional electret microphone. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Cameras, cameras don't
There were many differences between cameras: 1. ** Recording Method **: - The camera used optical and chemical recording methods. It was a device that used optical principles to record images. - The camera used an electronic recording method to convert optical image signals into electrical signals for storage or transmission. 2. ** Appearance **: - Cameras were usually large and highly integrated, while video cameras were small and low integrated. - Cameras had many functions. Many of them were video-recording machines that could record sound and images at the same time. The built-in microphone had good sound quality. It usually came with a monitor, an HD mirror, and a hood. Some of them came with a fill light, but they had few ports and did not support the expansion of professional accessories. The camera itself did not come with accessories, but it could support the installation of a large number of third-party accessories. There were many professional ports that could be connected to a variety of equipment. 3. ** Usage differences **: - Cameras were specially developed for movie applications, and most movies used cameras. - The camera was developed for television applications and could be used in television programs (such as news programs and studio programs), television dramas, documentaries, feature films, and other programs. However, in the modern film and television industry, there was a trend of combining movies and television. The two could be used in some shooting scenes. 4. ** Price difference **: Cameras are generally more expensive, while video cameras are relatively cheaper. 5. ** Different Image Quality **: The image quality of the camera is slightly worse than that of the video camera. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Film cameras and digital cameras
Professional Cameras and Home Cameras
There were many differences between professional cameras and home cameras: ** 1. Image quality ** 1. ** hardware performance ** - Professional cameras were usually equipped with higher-level sensors, lenses, and other hardware components. For example, in low-light environments, professional cameras such as the SonyFX3 had better performance in low-light environments, allowing them to capture clear, low-noise images in darker environments. However, home cameras might have more noise in low-light environments, and the quality of the picture would drop significantly. - The quality of professional cameras was often higher, with a wider focal length coverage, smaller distortion, and better optical performance. They could meet a variety of shooting needs, such as the conversion from large scenes to close-up shots in movie scenes. The lens of a home camera was more suitable for daily shooting scenes, and the focal length was relatively fixed or the coverage was narrow. 2. ** Color reproduction ability ** - Professional cameras were more accurate in color science and could accurately restore the true colors of the scene. They could provide more room for adjustment through professional color configuration files such as Log mode. Although home cameras also had a certain degree of color optimization, it was more to directly output a better image. The flexibility and accuracy of color adjustment were relatively low. ** 2. Function ** 1. ** Manual control ** - Professional cameras provided a variety of manual control functions, such as manual focus, manual aperture, manual shutter speed adjustment, and so on. This allowed professional photographers to precisely control the shooting parameters according to the shooting needs to achieve specific shooting effects. For example, when shooting dynamic scenes, the motion blur effect could be controlled by precisely adjusting the shutter speed. Home cameras were mostly automatic, with limited manual functions. They were more focused on ease of use and convenient for ordinary users to operate. 2. ** Special Function ** - Professional video cameras might have some special functions, such as multi-format recording, which could record in different video format and resolution to meet different post-production needs. Some professional video cameras also supported the expansion of external devices, such as external audio equipment to obtain higher quality sound recording. Home cameras were mainly focused on meeting the basic functions of daily family shooting, such as simple video recording and photo functions. There were relatively few special functions. ** 3. Durability and stability ** 1. ** Airframe structure ** - Professional cameras usually used more durable body materials to adapt to a variety of complex shooting environments, such as collisions and bad weather when shooting outdoors. For example, some professional cameras-on-shoulders were designed to withstand long-term use and transportation. Household video cameras were more portable, the body material was relatively light, and the durability was not as good as professional video cameras. 2. ** Anti shake performance ** - Although some home cameras also had anti-shake functions, the anti-shake technology of professional cameras was often more advanced. For example, some professional movie cameras used 5-axis anti-shake technology, which could compensate for the image shake caused by hand shake or moving shooting in multiple directions. It could provide a more stable image when shooting scenes such as hand-held shots. ** 4. Price ** 1. ** Price Range ** - Professional cameras were usually more expensive due to their high-performance hardware, complex functions, and professional design. Professional HD cameras such as the SonyPXW-Z280 could cost tens of thousands of yuan. Home cameras were more affordable, ranging from a few hundred yuan to thousands of yuan. For example, home cameras such as the Sony-HMD-CX405 were affordable to ordinary consumers. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Cameras
Here are some camera models: - The model plx101 high-frequency mobile x-ray camera. - It was a 535B camera from ARRIFLEX. - There were many models of cameras from Sony, such as the NEX-VG30E, FMDR-AK45A, FX3, FMDR-AK60, ILME-FX30, PXW-Z280, HXR-MC2500, PXW-Z150, PXW-X280, HXR-NX100, HDIR-CX405, PXW-Z90, HXR-NX200, etc. - Canon PowerShot V10. - Nikon Z30, Z8, etc. - It was a professional video camera from Matsushita. - Fuji's XT5. - Djiang's PK3 (action camera). - Canon XF605. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Cameras
I'm not sure what you mean by "camera equipment". If you want to ask about camera equipment, here are some common camera equipment related knowledge: In terms of types, there were home cameras, professional cameras, and cameras used for special purposes such as surveillance. Household video cameras were light and easy to operate. They were common household electrical appliances. Nowadays, there were many storage methods for home cameras. Some could store images directly in flash memory, and the newer models could store images directly in the hard disk of the body. They could also record both dynamic and static videos, replacing the need to carry a digital camera at the same time in the past. Professional cameras such as some models from Sonny, such as the FX3, a 4K movie camera with 10.2 million pixels, 5-axis anti-shake function, priced at 32000 yuan; the ILME-FX30 with 5-axis anti-shake, 6K video, autofocus function, priced at 12938 yuan, etc. Different models had different functions such as resolution, anti-shake, and zooming. There were different types of surveillance cameras, such as full-color, starlight, super-starlight, and blacklight. The main difference between them was the tolerance of low illumination to maintain color. For example, the black-light level of the PC could maintain color under low illumination of 0.0005 Lux (illumination unit), but the star-level or ordinary infrared had to rely on the fill light. In terms of the types of fill light, there were infrared, white, warm light, and other types. Different types had different color temperatures and frequencies. For example, infrared was the mainstream application, but the monitoring screen was black and white after infrared was activated. If a color image was needed, white/warm light fill lights were needed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How are the conference cameras and cameras connected?
Your question is a little vague. Generally speaking, if it was a USB camera, it would be directly plugged into the USB port of the computer and the computer would be able to recognize it. If it was a conference camera, some could be connected to a display device through an Bluetooth cable, such as a large screen or a TV. If you wanted to connect to a computer for a video conference, you might use a USB or network interface (such as an ether interface). You also had to install the corresponding driver or software on the computer, and then make some simple settings, such as selecting a device, adjusting the image parameters, and so on. If it was a more professional conference camera, it might also involve network equipment such as switches and routers to build a network connection. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>