Nowadays, mobile phones have become a photo-taking tool for people to record everyday good things. Whether they are beautiful scenes, life or wonderful moments, they can be recorded with their mobile phones anytime, anywhere, leaving a good memory. But for a long time, there were two designs of photography. Pain points: First, the bottom is not big enough, because today's intelligent machine is the mainstream trend of light and thin, compact and difficult to accommodate the body of the larger sensor; second, optical zoom, the main reason is not enough space. As a new generation of Huawei The flagship product, the P20 Pro, broke through traditional restrictions and pioneered the three-camera system. It not only opened up new horizons for consumers, but also led the development trend of global mobile photography once again. This machine has also been rated by the authoritative camera evaluation agency DxOMark so far. Take pictures of the best smart machine. So what is the highlight of the P20 series camera?
This article describes the revolution brought by the P20 series in detail from two aspects of hardware breakthrough and algorithm innovation.
One, the most advanced photography system
1. Unprecedented 40 million Leica three shots
The Huawei P20 Pro in Huawei's P20 series has become the world's first smartphone equipped with a rear-mounted three-camera. The specific specifications are as follows:
Telephoto lens: 8 megapixel, 1/4.4 RGB sensor, f/2.4 aperture lens with 80mm equivalent focal length and optical image stabilization
Main camera: 40 megapixel, 1/1.73 RGB sensor with Quad Bayer structure, equivalent focal length of 27mm, f/1.8 aperture lens
Sub Camera: 20 megapixel, 1/2.78 monochrome sensor, 27mm equivalent focal length, f/1.6 aperture lens
As the world's first rear three lens, about 3x optical zoom, 5x hybrid zoom, and a farther and more transparent world (10x digital zoom).
Bottom one-level pressure dead: The largest size CMOS image sensor in mainstream mobile phone lens.
At present, Huawei P20 Pro has the largest size CMOS image sensor in the mainstream mobile phone market, which is 2.25 times that of the Samsung Galaxy S9+ and 2.7 times that of the iPhone X. The larger photosensitive area brings more compact visual effects and There is little background blur effect in the mobile phone field.
As the size of the photosensitive element increases, the size of the unit pixel is also correspondingly enlarged. As the pixel area increases, the light-receiving area increases, ie, the captured image becomes clearer. There are also advanced pixel fusion technologies that can increase the 4000 The megapixel information is oversampled to a picture of 10 million superpixels. At this time, the size of the unit pixel is equivalent to 2μm, and its sensitometric performance is significantly ahead of other products in the same period. With greater dynamic range, higher sensitivity is achieved. In the extremely low illumination environment, the sensitivity of Huawei P20 Pro can be used up to ISO 102400. It is not only unique in the field of mobile phones, but even in the field of digital cameras only relatively high-end models can be achieved.
Huawei P20 image sensor has a single pixel size of 1.55μm, which is 1.4μm ahead of the Samsung Galaxy S9+ and 1.22μm of the iPhone X. The larger pixel area means that the light receiving area increases, and the amount of light received is relatively more. The ratio rises accordingly. In a dark environment where the naked eye can no longer recognize objects, it is still able to produce a clear picture.
2. The new zoom system brings the next step of outstanding image quality
Huawei P20 Pro also boasts 3x optical zoom and 5x hybrid zoom. It is also very easy to use. Just tap the 1X, 3X and 5X on the camera interface to easily switch between the three focal lengths. Let's also take a look at the night zoom. The proofs taken, in fact, Huawei P20 Pro also supports a digital zoom of ten times. Through the above proofs we can see, in fact, in the 3X zoom, the quality of the proofs is very high, and the noise control of the 5X zoom is also very good, while the light behind The walls are also very clear, almost the same quality as the optical zoom.
When zooming within 3 times, the traditional dual cameras are as clear as before: the black and white module captures the gray information, which in turn produces fine details and tone; the color module senses the color. The two data are generated synchronously and are superimposed on it. After merging, a photographic work with excellent results is retained - this imaging process is much better than the traditional Bayer filter.
When the zoom is more than 3 times, the third camera will start automatically. In order to realize the three sets of modules, Huawei engineers perfectly synchronize the three core actions: auto exposure, automatic white balance calculation and auto focus. The result is undoubtedly very satisfying. The complex triple-camera module is not a breeze when it comes to technically realizing continuous, smooth viewing of the live view image when the zoom ratio is switched.
After 5x zooming, Huawei P20 Pro restores colors perfectly and accurately presents hair, eyes and other details. Compared with other mobile phone photos, the advantage is remarkable.
Even when using the 10X digital zoom, shooting posters on a long distance wall, smart zoom shooting with the late algorithm compensation, Huawei P20 shooting the edge of the font is clear, leading to a large extent can be clearly seen.
3 excellent performance of high dynamic range
In order to achieve breakthrough, high latitude, and high-quality performance in backlight shooting scenes, in addition to the configuration of large-size photosensitive elements, the Huawei P20 series is designed to achieve an unprecedented purity of texture in HDR shooting by developing new solutions. The HDR photographs of Huawei P20 series will be processed first by the ISP for HDR processing of the RAW data, and then be written. That is, the HDR shooting mode of the Huawei P20 Pro is actually directly to the original before writing to the memory. The image is done in-camera Dodging and Burning, which is really professional. From the actual effect of backlighting, this process is indeed better than other models.
With the help of powerful hardware and processing procedures, the newly launched portrait photography mode brings fresh and new results to portrait shooting. Whether in the backlight or dark light environment, users will get amazing photos.
4. Self portrait, can be more beautiful
P20 series mobile phones are equipped with 24 million pixel front module, with f/2.0 aperture lens. Advanced BSI CMOS image sensor combined with color temperature sensor, intelligent correction of skin color under different ambient light.
In the backlight self-timer scene, you can see that the picture on the left of P20 shows a more vivid face, the natural color of the character, delicate, with the appropriate landscaping, the overall effect is fascinating. And the right picture does not perform well as a whole Color control and detail modification, lack of beauty.
5. The ultimate 'WYSIWYG'
Huawei's P20 series uses a 4-in-1 focusing system with a new laser sensor detection range of up to 3 meters. There is also a new 4D tracking camera. As its name implies, 4D tracking means high speed and accuracy over the entire screen area. Track the subject and easily freeze the wonderful moment scene. This also solves the pain points when many people take pictures: Out of focus, especially when shooting moving objects, it is difficult to successfully focus on the subject is a common situation. Slow focusing speed, focus on the ability to focus Poor, etc. are all important factors.
The 4D prediction tracking function automatically tracks objects and predicts object trajectories during shooting, enabling faster and more precise focusing. Not only that, but thanks to the nearly zero-delay high-speed shutter, the P20 Series minimizes shutter lag. Realize the limit snapshot, WYSIWYG.
Taking this map as an example, the P20 Pro predicts the longest movement of a character's possible trajectory at the next moment by recognizing high-speed moving objects, and takes a near-zero-lag 1/900s high-speed shutter shot to accurately capture details. While pressing the shutter at the same time The other two phones A and B, A finished hair, the hair has fallen, which means there is a shutter delay, and the clothing part is overexposed; and B not only shutter lag, because the focus is not accurate and the shutter speed is slow, the screen appears smear And fuzzy.
Second, the AI master who knows you the most: Smart photography experience
Most users lack understanding of the camera's shooting mode, and it is not possible to determine which camera mode to choose in the current scene is more appropriate. Therefore, in order to improve the user experience, help consumers take more satisfying pictures and gradually learn various pictures. Mode, Master AI came into being. At present, Huawei's P20 series mobile phone camera system has been able to identify 19 categories, 500 + shooting scenes, and give the corresponding parameter changes, user-friendly shooting.
1. AIS (AI Image Stabilization) Intelligent Image Stabilization Technology
Why is the camera blurred?
As we all know, the exposure of a photo is determined by several factors: shutter speed, aperture size, sensitivity (ISO value), etc. Different combinations of these values will directly affect the shooting results.
When the sensitivity is fixed, the smaller the aperture, the larger the depth of field and the richer the information on the screen. Correspondingly, we need a slower shutter speed to ensure the amount of light entering.
When the sensitivity and aperture values have been set, extending the shutter speed, ie, increasing the exposure time, can capture the effect of water flow or light flow, but when the shutter time is slower than the limit of the human body's handheld shooting (for general mobile phones, approximately For 1/30 second), the picture becomes blurred due to 'hand shake'.
Photographed in low light, if the shutter speed is not fast enough, the camera will be easy to blur.
The P20 series employs the new black technology 'AIS' (AIM Stabilization) in the night view mode, allowing the user to carry out continuous exposure for up to 6 seconds in a hand-held manner, and obtain a totally different from what has always been the past. High-quality night photographs. This technology mainly uses AI technology analysis to organize the feature points of each picture in the shooting process, identify the shape and edges of objects, and automatically capture all the photos generated during the 6 second exposure time, and filter them with AI algorithm. Correct the image shift and blur caused by hand shake, and finally superimpose the photos, and balance the illumination of each element in the screen to get a perfect night scene image. This will undoubtedly solve the problem of not being able to hold the night scenery in hand. Whether it is a light The silence of the wilderness, or the busy night market, can take clear photos of the HUAWEI P20 series.
In the video shooting, P20 series application AIS intelligent anti-shake technology, to achieve six-axis video anti-shake effect, effectively prevent the video screen shot during the vibration.
2. Master AI (Smart Photo Assistant)
Huawei designs a recommendation engine (Suggest Engine) on the algorithm architecture dimension to obtain the information of the viewfinder in real time. According to the scene recognition, the result of the face detection, performs recommendation according to predefined rules, reports to the user operation interface, and records the current The user's operating behavior is fed back to the recommendation engine. By continuously learning the user's habits, it gradually achieves the purpose of being able to recommend to the user a tailored and satisfying photographing mode.
(1) Scene detection:
From shallow to deep can be divided into three links: image processing, image analysis, image understanding.
Image processing is the analysis, processing, and processing of images to meet visual, psychological, and other requirements. Image analysis is more important than researching the content of images, including but not limited to various technologies that use image processing. It is more inclined to analyze, interpret, and identify image content. Image understanding is the semantic understanding of images. It is a high-level operation. Through understanding the meaning of image content and interpreting the original objective scene, it guides and plans behaviors. This has many similarities to human reasoning patterns.
Scene detection algorithm combines machine learning, deep learning theory and image analysis and understanding to achieve the ability to distinguish between multiple scenes.
(2) Recommended rules:
How to choose the most suitable photographing mode among the identified scenes? This uses the recommendation rule. On the spatial dimension, identify multiple targets identified on a single screen and identify the subject; on the time dimension , Can be done to identify the changes in the target range of the viewfinder, to avoid interference factors.
(3) User habits:
The user can decide whether to enable the Master AI technology. If the Master AI is cancelled during this camera operation, the shooting mode can be turned off. The Master AI will restart the recommended camera mode the next time the camera is turned on.
In general, the recommendation model is a smarter application of AI technology on P20 series phones. It also realizes the recognition and recommendation of scenes. It is even more interesting that AI will even happen in multi-object shooting scenes. Optimize the recommendation rules by learning: For example, if you shoot a portrait next to a flower, the system will prefer the portrait mode to recommend it instead of recommending the floral pattern.
3. Smart camera assistance
When recognizing the tilt of the compositional horizontal line, the AI will intelligently remind the user to adjust the angle of the mobile phone, recognize the scenes of the groups with multiple faces, and intelligently remind the user how to compose the picture when shooting the group pictures, so that these precious moments can be further improved. Excellent.
4. 3D portrait lighting technology
The P20 series adds 3D portrait lighting function, which uses 3D real-time modeling technology to better match the user's facial features and simulate studio-level multiple lighting effects: Butterfly Light, Theater Light, Classic Light, etc. Front and rear camera All support this function. The user can adjust the light effect in the viewfinder interface and picture editing interface, which enriches the playability of portrait shooting.
5. AI's overall assistance for imaging related functions
The P20 series introduces the Kirin 970 chip and AI technology, which can be subdivided according to the user's actual environment and scene, and then provide users with assistance for shooting scenes. For example: Zoom shot text, AI clarity of the final text image The degree has a significant optimization effect.
In recent years, Huawei and Leica have worked closely with each other on mobile photography. Huawei's P20 series is a collection of all kinds of video black technology. It is undoubtedly based on Huawei's P20 series' most advanced sensors in the mobile phone field. The AI anti-shake algorithm has made the mobile phone's competitiveness in photographing soaring. Especially for night shooting, it is the king of night photography in the mobile phone field. We also saw Huawei and Leica on the Huawei P20 series. A large amount of photographic technology is more fully presented, which is why the machine is able to lead the authoritative DxOMark camera phone leaderboard.
YORK New Media Coolest Technology News
Scan code win award
comment
* Netizens are not allowed to speak in the standing position, this site is not recommended in the comments section of any online store, dealer, Beware of being deceived!
