Distance parameter calculation method, dual-camera module and electronic device

Abstract

The invention provides a distance parameter calculation method, a dual-camera module and an electronic device using the method. The distance parameter calculation method is used for calculating a distance parameter related to the dual-camera module based on a disparity value between a first image and a second image shot by the dual-camera module, and comprises the following steps: establishing a relational expression of the distance parameter and the disparity value, wherein the relational expression is a sum of a product of at least two disparity terms and at least two corresponding coefficients, and the disparity item is a power of the disparity value; shooting a shot object on at least two predetermined distances by using the dual-camera module, and calculating at least two disparity values of the shot object between the first image and the second image; and calculating the at least two corresponding coefficients based on the at least two corresponding coefficients and the at leasttwo disparity values, and determining the relational expression. By adoption of the distance parameter calculation method, the dual-camera module and the electronic device, fast ranging or fast focusing can be achieved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a distance parameter calculation method of a dual camera module, and a dual camera module and electronic equipment using the distance parameter calculation method. Background technique [0002] At present, more and more mobile phones are beginning to apply dual camera configurations. Dual cameras can provide more shooting possibilities without increasing the thickness of the module. [0003] Usually, in a dual-camera configuration, the two side-by-side cameras are not exactly the same. Generally, one is a wide-angle lens and the other is an optical zoom lens. For smartphone cameras, digital zoom is generally used to enlarge the middle part of the screenshot from the original imaging, and the picture quality drops significantly, while optical zoom can keep the clarity of the picture while zooming in on the viewfinder area, that is, lossless zoom. The dual-camera setup can better ...

AI Technical Summary

Problems solved by technology

[0006] However, due to the high requirements of the algorithm for the dual-camera configuration, there are still only a handful of algorithms with good effects that can be actually applied to mobile phones, and the correction in the early stage is relatively complicated.

In addition, due to the need to perform correction and other processing on the two captured images, the processing speed will be greatly reduced

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