Phase focusing method and user terminal

Abstract

The embodiment of the invention discloses a phase focusing method and a user terminal. The method comprises the steps of: under a low light focusing mode, using a preset sensitivity value to obtain a plurality of first images and a plurality of second images by an image sensor in a preset time quantum, wherein the first images are obtained by the left pixel point of the image sensor, and the second images are obtained by the right pixel point of the image sensor; performing color noise filtering on the all first and second images; combining the all first images which have been subjected to color noise filtering into a first target image, and combining the all second images which have been subjected to color noise filtering into a second target image; and focusing according to the image data waveform of the first target image and the image data waveform of the second target image. Therefore, by using the phase focusing method, the phase focusing success rate can be improved in the case of low environment light intensity.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a phase focusing method and a user terminal. Background technique [0002] In the process of taking pictures with the smart terminal, the user often needs to focus. Focusing is the process of changing the object distance and distance position through the focusing mechanism of the smart terminal to make the image of the object clear. There are many focusing technologies, including phase focusing technology, contrast focusing technology and laser focusing technology and so on. Among them, the phase focusing technology is favored by more and more users because of its fast focusing speed. [0003] In phase focusing technology, the pixels of the image sensor are composed of left and right pixels in pairs. The smart terminal obtains the first image through the left pixels and obtains the second image through the right pixels. The smart terminal generates the image data ...

AI Technical Summary

Problems solved by technology

[0004] In practice, it is found that phase focusing has a good focusing effect when the light intensity is high; but when the light intensity is low, because the smart terminal uses a large sensitivity value, it will cause the first image and the second The image produces a lot of color noise; the color noise will have a great impact on the image data waveform, resulting in inconsistent waveforms of the two image data, so that the smart terminal cannot accurately calculate the focus position

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