Hybrid Zoom technology explained
Flagship smartphones are full of neat, unique, and increasingly powerful camera features, be it Google’s HDR+, LG’s wide angle shooting option, or super slow motion video capture. Huawei hopes to catch your attention with its new Hybrid Zoom technology, one of the new camera features tucked into its latest P20 and P20 Pro flagships.
Huawei’s Hybrid Zoom coque samsung prenom technology isn’t brand new. It has appeared in a number of the company’s high end smartphones, like the Mate 9, P10, and Mate 10 Pro. The technology was also mentioned during the launch of the company’s Kirin 960 processor back in 2016. However, the P20 Pro is the first Huawei smartphone to make use of a telephoto lens to improve its zoom capabilities up to five times before seeing a serious lack in quality.
Huawei P20 Pro coque riverdale samsung j3 2016 vs the competition: Is the new camera really better The Huawei P20 Pro is here and with it comes a record breaking DxOMark score, three cameras, and a whole bunch of photography tricks. With smartphones like the Pixel 2 XL and iPhone X setting the
Optical vs Digital vs Hybrid ZoomPhotography buffs can probably skip this primer, but it’s important to cover nonetheless.
The classic zoom options available with cameras fall into two categories, optical or digital. Optical zooming shifts mechanical glass lenses to adjust the focal length, resulting in a magnification effect on what you’re looking at. This way the image sensor (the bit responsible for capturing your digital image) sees the magnified picture as it captures, providing a zoomed in picture at its maximum resolution. Some smartphones boast optical zoom capabilities, but only by using cameras with different focal lengths and switching between them to zoom in on the subject this technique is far more limited than a traditional optical zoom.
Digital zoom, by comparison, is used in cameras without movable lens elements, such as a smartphone. When using digital zoom, the image sensor coque iphone 6 suport anten33932 sees the same scene regardless of the zoom level. The only way to zoom in is to crop the picture and scale it up, which reduces the resolution coque samsung galaxy a3 marbre andresults in more pixelated pictures. Some software interpolation coque arriere galaxy grand prime samsung is often 9 pcs x coque iphone 7 used to soften the look, but the fine details simply can’t be detected.
This macro shot compares a 3x digital vs 3x optical zoom (18mm to 55mm), shot with the same camera and settings. 3x Digital: Note the increased noise and loss of detail on the book cover. (click to zoom) 3x Optical: Not only are details preserved, but white balance is improved by focusing on the subject.
Huawei’s Hybrid Zoom uses dual cameras in a more intelligent way, utilizing powerful software to mix data from two cameras at different focal lengths in order to retain and/or rebuild more detail when zooming in. It’s certainly not optical zoom, and the results aren’t quite as good, but it’s more powerful than basic digital zoom for preserving fine coque iphone 5 qui brille details at a distance.
How Hybrid Zoom worksSo how do we get there A very powerful image processing technique called super resolutioncan be used to enhance the detail in images. Huawei galaxy j3 2016 coque licorne doesn’t specifically state its Hybrid Zoom technology uses super resolution techniques, but there are a few hints lying around. The company’s HiAI mobile neural network computing coque magnetique pour iphone 6 s anten31793 platform documentation details a range of image processing techniques, including super resolution, that can be done on its Kirin NPU. So the signs point to some form of super resolution technique.
Super Resolution is used by astronomers to remove noise and increase resolution when observing distant planets.
The general idea with super resolution is something called sub pixel localization. Sub pixel localization determines the accuracy of any point in a picture to sub pixel accuracy by looking at the same point in two coque iphone 6 dure anten32873 or more frames, each with a slightly different point of coque iphone 4 avec porte carte view. Huawei’s dual camera setup already gives us two slightly different points of view, but you can also combine multiple image frames from any single camera to increase the amount of data available. This technique isn’t reserved for dual cameras either it’s regularly used by astronomers to remove noise galaxy s10e coque samsung and increase resolution when looking at distant planets and other objects in space. Oppo did something similar with its 50MP Super Zoom images on 2014’s single camera Find 7.
Remember that the information stored in each pixel of a picture is only really an approximation of the light that reached the sensor. Cameras are limited by their resolution, so each pixel actually averages the finer details it can’t detect into a single color. This can also be influenced by the noise that creeps into the sensor from mechanical and electronic sources too. So when you take the same picture from two ever so slightly different positions, many of the pixels will end up with slightly different values. Using various algorithms or databases, it’s possible to extract extra detail from lower quality images by looking at the differences between pixels in multiple frames. The end result is a higher resolution image with extra pixel data.
Super resolution: Subtle differences between multiple frames are used to create a higher resolution output from lower resolution inputs.
Super resolution is essentially a form of oversampling it creates a higher resolution image from multiple lower resolution samples. You can use various different weights and algorithms to decide how to handle these pictures, and each will produce slightly different results.
The technology isn’t flawless. Like other interpolation filters, “rings” or “halos” around sharp edges can be a problem and textures can end up looking “painted” where colors end up smudging into each other. Different algorithms also work slightly better depending what’s in the scene, so results can vary depending on the contents of your pictures. We can see some of these artifacts when pixel peeping at samples from the Huawei P20 Pro below.
The P20 Pro’s Hybrid Zoom combines data from the 8MP 3x telephoto and main 40MP cameras.
When it comes to the Huawei P20 Pro’s camera, the super resolution image is cropped into the zoomed frame and possibly also compressed into a 10MP output. We’re also not sure exactly what algorithms Huawei uses to generate galaxie j5 2017 coque rouge this image 3 coque samsung j3 2017 and how many pictures the sensor takes from each camera. All we know is it combines data from the 8MP 3x telephoto and 40MP sensors. The same idea applies to other coque 7 plus iphone Huawei smartphones with Hybrid Zoom functionality, which use a monochrome sensor to gather additional data and limit the camera to a 2x Hybrid Zoom. To compare them, the 1x and 3x images are zoomed in (upscaled without interpolation)by a factor of 500% and 166.67% respectively to hit 5x. In other words, we’ve cropped all the images to match the 5x zoom frame. Originally the plan was to use the Pro mode to ensure the same exposure settings and counterbalance the different camera apertures, but our testing found that the 3x telephoto lens isn’t used at all when shooting with that option, resulting in an inferior zoom. My suspicion is that Hybrid Zoom is still in play in Pro mode, but only using the 40MP and 20MP monochrome sensors (there’s a comparison at the bottom if you want to take a look). Interestingly, Samsung also disables the 2x telephoto lens when shooting in Pro mode with its Galaxy Note 8.
Instead, we took the pictures using the default Photo mode for the best zoom topace coque galaxy a40 effect but turned the AI camera options off to keep the image colors and exposure as similar as possible when switching zoom levels. The first two examples also include a zoomed in 40MP image for comparison. As we would expect, shooting in the 40MP mode gives us extra resolution data for better quality when performing a digital zoom. The results also show how the optical and Hybrid Zoom options perform much better than digitally zooming in on the 40MP image. They are definitely the options to use when shooting distant objects.
Be sure to click on the images to take a close up look and click this link to see the full resolution uncropped imagesin this article to compare them for yourself.
1x uncropped 5x uncropped 10MP 5x digital crop 40MP 5x digital crop 10MP 3x optical to 5x digital crop 10MP 5x Hybrid Zoom
In this first gallery, the main elements to focus on are the text on the right and the grooves in the vinyl on the left. Scaling up the 1x image with a coque iphone 5 plastique dur 5x digital crop proves hopeless at picking out any text detail at this distance. The coque camouflage samsung j3 situation is only marginally improved by switching to the 40MP sensor, showing that digitally zooming into a photo this far isn’t really much use regardless of your pixel count. However, the differences between the 3x optical and 5x Hybrid Zoom modes are harder to tell apart. The Hybrid Zoom picks out the text detail much more clearly and denoises the image, but the side effect of this is that the grooves on the left begin to blend together. The color grading is also slightly different, most likely as a result of the processing algorithm. Overall though, it’s the better picture if you’re looking to zoom in this far.
1x coque avant arriere iphone 6s anten30719 uncropped 5x uncropped 10MP 5x digital crop 40MP 5x digital crop 10MP 3x optical to 5x digital crop 10MP 5x Hybrid Zoom
This second gallery shows similar deficiencies on the 5x digital crop that we manufactured in post(rather than on camera). The 3x optical option passably picks out edge details on the flowers and leaves, and again there’s very little to tell between it and the 5x option here, save from the sharper edges. The biggest difference is probably the denoising effect from the Hybrid Zoom and some slightly more refined edges. There are also notable color and exposure differences between the 1x, 3x, and 5x zoom levels. This is partly down to the camera’s auto settings, the different camera apertures and contents of the frame, and also possibly the software algorithm.
1x uncropped 3x uncropped 5x uncropped 10MP 5x digital crop 10MP 3x optical to 5x digital crop 10MP 5x Hybrid Zoom
Our final images demonstrate the P20 Pro’s Hybrid Zoom feature in more optimal conditions, with plenty of light, hard edges, and few complex textures. The difference this time is more noticeable. While the 3x optical zoom option shows some notable noise and jaggedness upon zooming in digitally to 5x, the hybrid algorithm removes virtually all of these issues, resulting in a much cleaner presentation in the 100 percent crop. The 1x to 5x uncropped images also show just how much of a zoom 5x really is when you’re out taking landscape shots, so the Hybrid Zoom holds up donutella unicorno tokidoki iphone 6 6s coque cover incredibly well here.
1x uncropped 3x uncropped 5x uncropped 10MP 5x digital crop 10MP 3x optical to 5x digital crop 10MP 5x Hybrid Zoom
We see similar results with this long range outdoor picture. The detail is mostly lost using digital zoom but is reasonably well retained from the 3x optical camera even when blown up to fit the 5x frame. When comparing the 3x optical to 5x hybrid, we can again see a smoother presentation from the hybrid option, with minor details appearing particularly well preserved. Again zero 5 iphone x coque though, there is some noticeable color smearing when pixel peeping, particularly when looking at the shadows on the statues and the roof tiles…