Method and device for realizing light painting photography, and photographic equipment

Abstract

The invention discloses a method and a device for realizing light painting photography, and photographic equipment. The method comprises the steps of: preprocessing multiple frames of photographed images; acquiring a pixel value of each pixel of each frame of processed image; calculating a pixel value difference of each pixel point between the adjacent frames of images; determining the pixel points to be light source points or background pixel points according to the obtained pixel value differences and a preset light source point threshold value; and eliminating the weak light source points within a preset distance searching range of each light source point, and reducing the pixel value of each background pixel point, wherein the distance searching range is determined through counting the radiation decelerating tendency of different light sources along with real 3D physical space distances. Through distinguishing the light source points from the background pixel points and reducing the pixel values of the background pixel points, the comparison effect of light track and the background is improved, the background brightness of the image is dimmed, the night light painting effect is realized in a daylight scene with high light intensity, the application occasions of light painting photography are expanded, and the photographic experience of the user is enhanced.

Description

technical field [0001] The present invention relates to field photography technology, in particular to a method, device and photographing equipment for realizing light painting photography. Background technique [0002] Light painting photography is a simple yet creative and surprising photography technique. Light painting photography needs at least two people to cooperate with each other to complete, so it is more varied and interesting. It is mainly a photographic art method that uses the movement of the light source to enhance the environment or the subject. The light source moves within a period of time, and the photosensitive element of the camera evenly records the light at each unit moment, thereby recording the light source movement track of the entire picture. Light painting photography can be done indoors, at night, and even in some dim light environments where it is impossible to take pictures at all. [0003] In order to highlight the expressive ability of lig...

AI Technical Summary

Problems solved by technology

[0003] In order to highlight the expressive ability of light trajectory, at present, light painting photography needs to be carried out in scenes with low light. In scenes with relatively bright light, it is impossible to capture the effect of clear contrast of light trajectory.

That is to say, at present, the application scenarios of light painting photography are limited to night or dimly lit scenes, so if the user finds a good shooting scene in daytime or brightly lit scenes, it is impossible to record the light painting effect at that time, which will undoubtedly reduce the user shooting experience

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