Method and device for controlling flash

Abstract

The embodiment of the invention provides a method and a device for controlling flash, and relates to the technical filed of digit. According to the method and the device, a corresponding supplementary light driving current and an exposure driving current can be set according to the difference of statistical gray values of a preview picture, the balance of preliminary flash, flash and ambient light is ensured, and the quality of shot pictures is increased as well. The method comprises the following steps of obtaining the statistical gray values of the preview picture, searching corresponding supplementary light parameters in a preset dynamic supplementary light list according to the statistical gray values of the preview picture if the statistical gray values of the preview picture are less than a preset threshold, setting the supplementary light driving current according the supplementary light parameters, driving a flashlight to carry out the preliminary flash by the supplementary light driving current, searching corresponding exposure driving current in a preset exposure parameter list according to the supplementary light parameters, and driving the flashlight to carry out the flash by the exposure driving current.

Description

technical field [0001] The invention relates to the field of digital technology, in particular to a flash control method and device. Background technique [0002] With the continuous development of mobile phone technology and the gradual enrichment of material life, people are increasingly emphasizing the multimedia experience of mobile phones. Cameras have become an essential function of mid-to-high-end mobile phones. Multimedia refers to the ability to simultaneously acquire, process, edit, store and display The technology of two or more different types of information media. In the camera function of the mobile phone, in order to improve the camera experience, a flash function is integrated on the camera, so that in a scene with relatively dark ambient light, the flash can increase the exposure to take better photos. [0003] The general working process of the camera flash in the prior art is divided into two steps: pre-flash and flash. Pre-flash is to emit a faint light...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of using the prior art to realize the above-mentioned flash control, the flash intensity of the flash is fixed when flashing, which will inevitably lead to the result that the photos taken will be underexposed due to the dark environment, or The environment is not very dark and overexposed, resulting in poor quality photos and unsatisfactory results

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