Brightness adjustment method and device of image to be spliced

Abstract

The embodiment of the invention discloses a brightness adjustment method of an image to be spliced, which comprises the following steps that a threshold of each frame of the image to be spliced is obtained by using an Otsu method within a preset brightness range, the offset standard of the image to be spliced is calculated in accordance with the threshold, and the brightness of each frame of the image to be spliced is adjusted in accordance with the offset standard. Additionally, the embodiment of the invention further provides an adjustment device of the image to be spliced. According to the adjustment method, the threshold of each frame of the image to be spliced is obtained by using the Otsu method, the unified offset standard is calculated and obtained in accordance with the threshold of each frame, the brightness of each frame of the image to be spliced is adjusted in accordance with the unified offset standard, so that the brightness difference of each frame of the image to be spliced is eliminated, finally, the spliced image has no obvious seams, and a continuous visual effect is achieved.

Description

technical field [0001] The invention relates to image processing technology, in particular to a method and device for adjusting brightness of images to be spliced. Background technique [0002] In the initial shooting of the image, due to the limitation of the camera angle of view, it is very difficult to directly obtain a wide-angle or panoramic image through the camera at the same time. Therefore, it is necessary to use image stitching technology to combine two or more frames with partially overlapping scenes. The images are spliced ​​after image processing to generate an image with a wider viewing angle or a 360° panoramic image to meet the needs of people observing and browsing large-scale scenes. [0003] However, when shooting a group of images to be stitched, due to man-made or natural landscapes, the camera’s orientation, angle, exposure and other important parameters are different, which further leads to great differences in the brightness of the images to be stitch...

AI Technical Summary

Problems solved by technology

[0003] However, when shooting a group of images to be stitched, various important parameters such as the orientation, angle, and exposure of the camera are different due to man-made or natural landscapes, which further leads to great differences in the brightness of the images to be stitched. The final stitching effect is adversely affected, such as: the final result has obvious seams, poor matching, visual discontinuity, etc.

[0004] At present, the focus of research on image stitching is on image registration and fusion reconstruction, and no method has been found to adjust the brightness of the image to be stitched.

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