Wednesday, March 19, 2014

Oppo Smartphone Snaps 50MP Pictures

Engadget has had a chance to test Oppo Find 7 smartphone camera - a high end smartphone long rumored to feature 50MP sensor. In fact, it is built around 13MP Sony IMX214 sensor, but has an interesting feature: "50-megapixel "Super Zoom" creation: the camera takes 10 consecutive shots extremely quickly, and then it automatically picks four best shots to combine them into a 50-megapixel still. Our 8,160 x 6,120 sample shots ended up being around 10MB large each, and as you can see [below], there's a lot of detail preserved even up close, which puts the Xperia Z1's 20-megapixel camera to shame." Engadget's test pictures seem to support the claim:


Although it's hard to tell for sure, but it looks like Oppo has licensed Almalence Super Zoom technology. There is a comparison of Almalence Superresolution Zoom with Sony Clear Image Zoom and an article on its implementation in Huawei phones.

4 comments:

  1. Not sure how much of that 50mpix is real. The website says "resolution increase: more than 2 times." More than 2x from 13 is... not 50. Too bad they didn't post a res chart.

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  2. With super resolution techniques, people tend to talk about LINEAR increase in resolution. This is consistent with normal measures of resolution, which are linear (for example, TV-lines, line pairs per mm). In printing, resolution is also linear (dots per inch, etc.).

    The consumer use of resolution to mean "total number of pixels" is the recent deviation from the norm.

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    Replies
    1. When we tell about "2x resolution increase" we mean 2x increase of number line pairs (that can be distinguished in captured image) or 2x MTF30 (or 50) increase. See a popular explanation: http://blog.almalence.com/how-to-measure-the-resolution-of-a-digital-camera/

      Also here is an example of test target used to measure MTF30: http://blog.almalence.com/almalence-makes-super-resolution-available-on-camera-phones/ (see second illustration in the post).

      (Nothing in this message should be considered as a confirmation that Oppo has licensed any technology from us).

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    2. Now I can officially confirm that Oppo uses Almalence's Super Resolution Zoom technology in Find 7.

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