Image processing method, mobile terminal and storage medium

Abstract

The invention discloses an image processing method, a mobile terminal and a storage medium, and the method comprises the steps: obtaining a star trajectory in a to-be-processed image; extracting pixels of the star trajectory, rearranging and storing RGB information of the pixels according to the sequence of gray values corresponding to the pixels from large to small, and storing the center position of the star trajectory; calculating an average RGB value in a neighborhood of a preset size around the star trajectory, and filling an area where the star trajectory is located according to the average RGB value; and generating pixel points according to the stored RGB information, and using the generated pixel points for filling according to the rearrangement sequence, using the center position of the star trajectory as the circle center, using the preset size as the radius, and the distance between the generated pixel points and the circle center being from near to far. Hardware cost and photography skill requirements required by shooting professional starry sky can be reduced, so that common users can also shoot starry sky photos without star tracks.

Description

technical field [0001] The present invention relates to the technical field of image processing, and more specifically, to an image processing method, a mobile terminal and a storage medium. Background technique [0002] As we all know, starry sky photography is an important subject in the field of photography, and it is extremely difficult. The setting of parameters such as exposure and sensitivity requires a high level of technology. At the same time, when shooting the starry sky, it is necessary to use the camera's strong light-sensing ability to take long exposures to capture stars that are invisible to the naked eye. The resulting problem is that the stars will have long trajectories due to the rotation of the earth. The longer the exposure time, the longer the star trails, such as image 3 As shown, the left and right are photos obtained with an exposure time of 180 seconds and 120 seconds respectively. The trajectory of the stars will affect the appearance, so it cann...

AI Technical Summary

Problems solved by technology

At the same time, when shooting the starry sky, it is necessary to use the camera's strong light-sensing ability to take long exposures to capture stars that are invisible to the naked eye. The resulting problem is that the stars will have long trajectories due to the rotation of the earth. The longer the exposure time, the longer the star trails, such as image 3 As shown, the left and right are photos obtained with an exposure time of 180 seconds and 120 seconds respectively. The trajectory of the stars will affect the appearance, so it cannot reflect the "deep and dreamy" side of the universe

In the existing technology, the star chaser can adjust the attitude of the camera in real time according to the rotation of the earth, so that the position of the star in the picture is always kept at the initial moment, so that the trajectory caused by the long exposure can be avoided, that is, the "tail" effect , Professional photographers who shoot the starry sky often need to configure this kind of star chaser, but the price of this kind of star chaser is high

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