Segmentation criteria of an iphone

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Segmentation criteria of an iphone

It comes with a similar dual-camera setup as the Galaxy Note 8, but adds a variable- aperture lens on the main camera.

Read our full report to find out how the camera performed in our DxOMark Mobile test. This article is designed to highlight the most important results of our testing. More details on how we score smartphone cameras are available here. At 91 points the video score is a little lower but still among the best, making the new Samsung an ideal choice for any mobile users who want the best possible still image quality without compromising on video.

Bright light Galaxy S9 images show bright colors and low levels of noise in all conditions. The Samsung Galaxy S9 Plus camera produces excellent results in good light and sunny conditions.

Colors are bright and vivid and exposures are good, with a very wide dynamic range. Samsung has also struck a very good balance between noise reduction and retention of detail. The levels of fine detail are not up with the very best, but fine textures are still rendered nicely and image noise management is outstanding, with very limited grain in blue skies and other areas of plain color.

It is also reliable and generally produces repeatable results, although we did find the occasional out-of-focus image among the hundreds of sample images captured during our testing.

Bright-light images show purple fringing on high-contrast edges and pretty noticeable ringing halos. The corners are also a little softer than the center, and we have seen some slight blue or pink color casts in bright light.

These are fairly minor issues, however, and overall, the Galaxy S9 Plus is an excellent bright-light performer. Exposure is also good down to very low light. The Galaxy S9 Plus records nice exposures with vivid color, accurate white balancelow noise, and good texture in low-light conditions.

Flash exposure is good, but a red-eye effect can be visible. Resolution and detail are quite impressive up to a 4x zoom factor. In the comparison below, you can see that the S9 Plus achieves better detail, with fewer artifacts and lower levels of noise at a 4x zoom factor, than the Apple iPhone X.

The Google Pixel 2 performs admirably for a single-lens camera, but without a dedicated tele-lens, it cannot compete with the Samsung and Apple models. Blur extends not only to the back of a scene but also to the foreground, and both blur strength and transitions create a pleasant look.

Subject isolation is good as well, but under closer inspection, some minor segmentation artifacts tend to be visible around the foreground subject, and dynamic range is a little more limited in bokeh mode than in standard shooting mode. The overall Photo score is calculated from sub-scores in tests that examine different aspects of its performance under different lighting conditions.

Exposure and Contrast 91 The Samsung Galaxy S9 Pus camera delivers good target exposure in all light conditions, down to very low light. Thanks to an efficient Auto HDR system kicking in when needed, dynamic range is very good as well. The Samsung achieves the widest dynamic range — especially noticeable in the highlight areas of the framewhere a lot of detail is preserved.

In some scenes the effect can be very strong, however, resulting in a slightly unnatural look. This, however, is pretty much a question of personal preference. The camera manages to strike a very good balance between exposing the foreground well and maintaining a good amount of detail in the brighter background.

Target exposure in this backlit window is very good. A lot of detail is maintained in the bright background and the foreground. The test chart shot below was captured at an extremely low light level of 1 Lux. The Galaxy S9 Plus image is slightly underexposed, but is still very much usable and in line with most direct competitors for these light conditions.

Samsung Galaxy S9 Plus extreme low-light 1 Lux test chart exposure. Some points are deducted for occasionally visible slight pink or blue color casts in outdoor scenes, caused by the auto white balance system.

The color responses of the three cameras in our comparison below are fairly similar, and the differences are mainly due to variance in exposure.

Segmentation criteria of an iphone

Samsung Galaxy S9 Plus Apple iPhone X Google Pixel 2 Color shading is pretty much a non-issue on the Samsung and is noticeable only in some low-light shots, such as our 20 Lux tungsten studio chart capture below on the right. Even under close inspection, no color shading is evident in bright-light shots, such as the outdoor scene on the left.Oct 02,  · Here's a little interesting weekend reading from Mark Sigal on O'Reilly about "Apple's segmentation strategy." Apple's segmentation strategy and why it works.

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Segmentation criteria of an iphone

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