Needless to say, the advantages and disadvantages of the dual-camera scheme can be used in the case of a general improvement in hardware capabilities, through the arrangement of dual cameras performing their duties, so as to obtain better image output quality, and this technology will be brought to the eighties, how much it can still play a role.

Don't you see,When Chrysanthemum launched the first dual-camera mobile phone Glory6P,Zhao Daming, the president of Glory at the time,People claimed to have sealed the dual camera80% of the imaging performance,In this case,Glory6P can still have a very good imaging quality at that time。

For this stalk from the mouth of the president of the Glory Project Department, it was later gloriously extended to Chrysanthemum 9, so far there are not only all kinds of ridicule from netizens, but even a certain joker has shown his skills, and he has made up god-level jokes with great difficulty, but he can also say it happily.

Mobile phone camera,It usually needs a pair to play a real effect,And chrysanthemum9The dual camera will evolve,When I first bought the phone,That's the most primitive state,This state can only play less than 20% of the performance。

After the phone is stimulated by strong patriotic feelings, the camera will evolve, and at this time, the camera with the lycra bonus will be able to exert its true strength, and the photo effect will be significantly improved.

At first, the camera was black.,After the first evolution, the camera will turn red.,There's a black dot in the middle.,There's a black circle on the outside.,There's a magatama on the circle.,And this is the primary single magatama camera.,There will be two magatama after the evolution again.,And so on.,When it evolves into a three-hook jade camera,Chrysanthemum 9 can complete the fruit 7p。

Well, the joker's statement is certainly a laugh-off, but it can also be seen from this that the influence of the chrysanthemum 9 dual camera, and the subsequent trend of dual photography in the entire smartphone industry, is naturally proof.....

Besides, Wang Zhengguo here, for the development of dual-camera cameras in the eighties, the only fly in the ointment is probably that the color sensor pixels can only reach 50,000 pixels, and there must still be a gap between the 200,000-pixel black and white sensor, which is different from the chrysanthemum machine dual-camera scheme decades later, the chrysanthemum machine dual-camera is the same size of the sensor size, the same number of pixels.

If 200,000 black and white pixels are combined with 50,000 color pixels, and with the same sensor size, using four black and white pixels to capture details, but only one pixel to capture color, will still have some effect.

Fortunately, after listening to Wang Zhengguo's idea of dual-camera scheme, Professor Bai Siwen also put forward his views on the problem of different pixels of the two sensors in a timely manner, which is enough to solve the needs of post-synthesis.

When studying black and white pixel and color pixel sensors, it is important to understand the question: What is the technology to achieve the difference between the two?

This has to talk about how the digital optical sensor realizes the color recording, whether it is CMOS or CCD sensor, both of which can not directly sense the external environmental color, they can only sense the intensity of light, that is, to sense black and white.

The reason why the color pixel sensor scheme can appear is actually achieved by adding a Bayer filter to each pixel, which can convert light and dark information into color information, that is, to capture color information through this technology.

Of course, the technology that can convert light and dark information into color information is not only the technology of Bayer filter, but it is the technology with the best comprehensive performance, and it can be accepted in terms of output color information, sensor manufacturing difficulty, cost, etc., so Bayer filter has naturally become the most popular technology on the market in the future.

Even since the second decade of the new century, there have been optical sensor giants seeking better performance filter solutions to achieve better color capture effects, Fujifilm, Suo Dafa and other giants have successively launched non-Bayer filter solutions of color sensors, the results are not very good.

Although the performance has been improved to a certain extent, the problems in terms of cost and other aspects remain high and are difficult to promote.

Bayer filters are the best solution for digital optical sensors to achieve color capture requirements, the technology was patented in 1976, the holder is Bayer, until this time in 1985, the patent is far from expiration, fortunately at this time digital optical sensors are not large-scale market, patent authorization is still relatively easy.

That is, after obtaining the patent authorization of Bayer filter, with the original technology from the patent holder at hand, Professor Bai Siwen had the confidence to say that he could launch a 200,000-pixel black-and-white sensor and a 50,000-pixel color sensor at the same time in 86.

As for why at the same technical level, 200,000 black and white pixels can be made but only 50,000 color pixels can be made, which is how Bayer filters work:

There are four photoreceptors in a pixel, i.e., green-red-green-blue, which filter different light rays through these four photoreceptors to achieve color data output.

The integration of four photoreceptors in a single pixel, which is not available in the black and white sensor, naturally leads to the process of a single color pixel is more complex and huge than the black and white pixels, and ultimately leads to the fact that under the same sensor size, the color pixels must be less than the black and white pixels.

Fortunately, this is not a big problem, with 50,000 color pixels to capture color, in fact, it is almost acceptable, anyway, color photos in the 80s are just beginning to rise in China, if you really turn out a photo of the color film washed out in the 80s, the color can only be regarded as average.

Compare a color photograph from the 80s to a photograph captured by a digital sensor and print it on the same level.

After all, these are two completely different imaging schemes, and the final output color will of course be different, which is why decades later, after the digitization of photography, there are still people who still miss film photos, which are called because of the unique quality of film photos.

Actually, I'm afraid it's more of a pretend.

Wang Zhengguo can predict that although the digital camera made based on this dual-camera scheme cannot achieve the imaging effect after several decades, it will definitely not fall behind compared with the domestic color film in the 80s, and will even be in the limelight because of its unique color style.

Tu Zhenying knew that the Foundation had been supporting Professor Bai Siwen of the School of Telecommunications Engineering in the development of digital optical sensors, but it had only been more than a year, and it was big news that he suddenly heard that all the results had been produced.

"The progress of the sensor is so fast? Before the company's technical department also specially collected foreign digital camera research and development information, it seems that foreign optical sensors have not been able to be practical on a large scale. ”

Regarding the term "black technology", Tu Zhenying naturally learned it after following someone for a long time, and he felt that Professor Bai Siwen could achieve breakthrough results this time, and I am afraid that it is really inseparable from black technology.

So what is the real situation, and is there really a shadow of black technology behind the breakthrough progress that can be made in a short period of time this time? Wang Zhengguo just smiled.

"Let's not talk about black technology, the reason why foreign digital optical sensors have not been put into practice so quickly is that those giants are focusing on CCD sensors, and the production process and equipment of that thing are very special, and every technological update needs to invest heavily in technology and equipment, and it takes a lot of time to see the results, which is essentially different from our CMOS sensors. ”

CMOS sensors are riding the east wind of the great development of computer processors, at least in the process, equipment has been making great progress, as long as the design problem of the sensor itself can be solved, there will be no difficulties in industrialization.

As for solving the technical limitations of the CMOS sensor itself, Wang Zhengguo has already communicated with Professor Bai before, and problems such as noise reduction and dark current have also been solved to a certain extent.

"If we had followed the rules, we certainly wouldn't have been able to launch the first digital camera in the last few years, but now that we have a clever plan, it's a lot ahead of schedule. ”

Strictly speaking, Wang Zhengguo could not call the dual-camera scheme an innovation in the 80s, because the dual-camera in the era of film cameras was also a competition among hundreds of people, and the dual-camera parallel to the single-lens reflex camera and the rangefinder was almost the dual-camera in the era of film cameras.

The famous Lulai double-reflex, this is the old brand that brings the reflex camera to the fire, as for the double-reflex camera produced in the republic, it is even more numerous, Seagull, Peony, Pearl River, Oriental, Phoenix and other major manufacturers have their own double-reflex models.

In the era of the outbreak of cameras in the Republic, almost more than 70% of the camera production units have the experience of producing double-reflex cameras, and the popularity of this thing in the Republic is also conceivable.

Professional digital reflex cameras have not appeared in the upper plane, and Kodak, the king of the film era, has launched a digital reflex.

The upper and lower lenses of this model use CCD sensors, one of which is used as a fixed focus 23mm wide-angle lens, and the other is a 3x variable focal length medium telephoto lens with a focal length of 39-117mm, plus a wide-angle focal length, the total focal length changes close to 5x optical zoom, which is probably the ancestor of the dual-camera scheme of fruit machines decades later.

Tu Zhenying doesn't know what the digital camera project is all about, but she can ask!

"What is the plan, let me tell me, now I really hope to see the digital camera sooner, this is definitely an epoch-making product. ”

When the dual-camera plan was explained clearly in 1510, Wang Zhengguo himself felt that he had dried up his saliva, but Tu Zhenying, who was wrapped in the quilt, couldn't fully understand, stared at her glasses and expressed doubts, she still had a lot of questions in her heart.