The second part of the world's printing conference technical article - the development of image input equipment in the 21st century
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Trying to predict the future is always an esoteric job, because without the power of the prophet, I will use the past as a flashlight into the future of menglong , in the imagination, let us measure 20,000 feet, from which to identify what happened at that time, and Try to capture the moment that appears in front of you.
About 40 years ago, the drum scanner was born as the first generation of digital image input devices. Then, about Fifteen years ago, the first generation of flatbed scanners appeared. At first they were not a threat to the drum scanner due to quality problems. However, they achieved satisfactory quality about six to seven years ago, and they began to challenge the dominant position of the drum scanner at a lower price, as well as the simplicity and flexibility of use. Tiantian has become the dominant platform scanner, dominated the wave of higher performance and lower price. However, as I said, a new and expensive camera called a digital camera is just like a roller scanner.
Looking at other trends, we know that sensors capture a single pixel at a time, for a one-line (or three-line) flat-panel scanner for a roller scanner, and to develop a pixel for capturing a region at a time, so the trend is Can capture a large amount of image information at the same time.
We also noticed that more pixels are not necessarily better, because the speed of the scanner is tempered by the need to take up a lot of capacity on the disk to meet smaller requirements! People don't want to wait for the machine, so the scanner gradually speeds up. Prices have fallen by 10 or more times and will continue to decline. In the end, obviously not the minimum, they will be cheaper and easier to use, without the need for a multi-trained mechanic, only a temporary operator.
The source of these changes is that users need to increase speed, reduce costs, be easy to use, and have smaller volumes. These requirements are all achievable.
If the past is driven by new component technologies and user needs, then the same forces will drive the future. Let's take a closer look at the new technologies that are waiting for us to research around digital cameras, what we need in the future, and to diversify our projects.
The most important of the series of future components of thinking is the sensor. They are included in the first two CCDs and CMOS. A faster, more sensitive three-line CCD with more components is predictable like a fast microprocessor. Therefore, they will continue to play a leading role in the near future. However, because of the increased sensitivity of CMOS, they will pose a large impact. This has happened in low-end scanners and digital cameras, and continues to attack from the bottom to the high end without any politeness. Once their mass is good enough, they will dominate with other advantages. 16 megapixel CMOS surface sensor already Here they will soon appear in digital cameras and scanners.
Although not miraculous, the lighting source is also changing. White LEDs have greatly improved luminescence performance due to their improved stability, strength and efficiency. At the same time, the linear source concentrator will cause the existing fluorescent tube to emit more light as needed. This will result in a faster and more sensitive scanner.
Electronic devices that support higher levels of integration will contribute to lower cost and faster scanners. The "on-chip scanner" chip is already here, and the faster connection to the host can transfer data to the host, allowing the scanner to quickly acquire data.
New mechanical devices will appear or disappear due to the presence of face sensors, the sensors do not have to move completely, or they can move over mosaic or cascading patterns and a so-called independent XY technique.
Colorimetry and ICC standard has been applied to material separations and has been demonstrated to achieve good color status. But it also caused some confusion. Because it is widely adopted by 1/O device manufacturers and application vendors, the complexity is reduced and the entire color management process is hidden by the user, which means it has been used. Seamless WSIWYG color will be the standard for the near future.
Also, good colors will be watched by the human eye, and WSIWYG color is not enough. Allowing the user to specify his or her favorite tool will reveal fuzzy logic that can satisfy anyone? ?
There is also a space defined for intelligent software, with many megahertz processors and rich processing power to perform more complex algorithms, so that the entire scanning process takes only a short time to process.
It will be understood that the larger area is the human-machine interface. It is solved by a combination of hardware and software. It is now an urgent problem to install the manuscript that takes more time and is annoying.
The pipes leading to the host will be widened to accommodate faster scanning speeds and appear in several situations wired, wireless and optical, dedicated or networked. If USB 2 is here, USB 3 will not be too far away.
Scanners are not a stand-alone device, although they are changing, but as long as it is connected to the host, it can benefit from it. The host's greater computing power and storage capacity allow the scanner to relieve more processing tasks and hand it to the computer for processing. This has many advantages for users. The cheaper scanner and multi-purpose main idea is to send a simple image to the host and store it in a complete state, and then process the image as many times as required. It can be used for several purposes, PhotoCD, printer. , printing, web...
We explore the changes in components that will influence the design of future image input devices. But what is the future device for obtaining images, and we must also explore what users need.
What the user used to care about is the quality of the image. Now he is satisfied with it, maybe he expects higher? I believe that users are satisfied with 95% of the current work of a large number of professional scanners. With a dynamic range of approximately 3.8 and a resolution of up to 4O00dpi, it is within the limits of most film originals because it is no longer sensitive to higher values. If you exceed this value, you can no longer make an image scanner, but a scientific instrument.
On the other hand, higher speeds are always good, this is not only a matter of productivity, we are faced with the fact that people like to wait for the machine. Another method is OK. If I lose 10 words in a minute, it is OK. However, when I press a button and delay a little in the character display, it is very annoying. What is the ideal speed flash speed. I said that the scan and the image are displayed on the screen, and color matching has been completed, including personalized color performance.
Competition will continue to drive down prices and improve performance. This is a trend that, like other electronic devices, will continue to foresee the future.
Scanners are still difficult to use and most users are eager to use the scanner. The era of specialized scanner operators is over. It is expected that even occasional users will be able to scan very well and they will be as easy to use as a copy, so that the first scan will achieve acceptable results.
Some people like to copy them with other sensitive components without connecting to a computer, just through a dedicated line, they are networked or completely independent and more like a device.
It is usually a scanner in a closed loop environment. The scanner is designed for a special output device. Today or tomorrow, the ultimate goal of scanning does not have to know the scan time and ultimately output to the printer, press, web, CD. In this way, the ability to multi-purpose, sweeping the description will be more valuable and make life easier.
As mentioned above, the expected development of components and changes in user needs, various types of professional image capture devices: how will new devices appear today and will emerge?
Roller scanners do not change much, and people's needs are of the highest quality and high resolution. They are still around these, but they have a small bottleneck and a small amount still keeps their high prices.
Platform scanners will still be greatly improved over the next five years. They will have all the advantages raised by the aforementioned components, such as faster and more sensitive sensors, better light sources, better and cheaper electronics. Their greatest strengths are speed, improved performance/price ratio, ease of use and reliability.
The use of area sensors will soon appear as the resolution of these components increases and the price drops.
The foundation is that flatbed scanners will continue to dominate the image capture device and will be used by professionals for the next 5 to 10 years.
However, what is faintly visible on the horizon is the digital camera. They have been used for consumer and web publishing. Thanks to the high-resolution, high dynamic range and high-sensitivity surface sensors, they have also begun to attract the attention of professionals, first in the studio and then in real life. The 16 megapixel sensor is already here.
The key to being accepted by people is good quality and reasonable price. I believe that photographers can easily spend several times the price of a traditional camera, but get amazing savings and processing in consumption, while having the advantage of being able to instantly preview the images taken, and eliminating the need to use a scanner.
Digital cameras do not simply pose a threat to printing scanners because they are a competing image capture device. However, because they remove the input to the scanner film, unlike paper, film is not the medium people use to change information. It is just a storage device for analog images that can be read by a film scanner. For long-term use, the use of film will decline, so high-end film scanners will be required.
It is important to emphasize this: unlike film, paper is longer (regardless of the prophecy it must disappear). As long as it is, a reflex scanner will also exist because it is always necessary to convert one medium to another. In the future, the reflex scanner will use a face sensor, which makes the scanner faster, easier to use and more reliable.
Is there a new type of image acquisition device in the process of development?
Because digital printing has become more popular, there is no clear boundary between it and ordinary printing. It will be made into what we call a hybrid scanner, a scanner that will be suitable for mixing document scanning and image scanning. It is a scanner that has fast scanning speed and control of document paper, and is also capable of handling high quality, high resolution color capabilities.
The network content is becoming more and more abundant, which increases the demand for 3D scanners. Editors of the E era want to provide real objects as much as possible and interactive, providing more information to consumers who have a purchase intention.
The last hybrid scanner is to let the user hold a scanner that is equivalent to a camera that can be moved - it can be used as a traditional scanner or as a portable digital camera.