Method and device for adjusting brightness

Abstract

The present invention discloses a method and device for adjusting brightness. The method includes: determining a first overlapping viewing area and a second overlapping viewing area for a first image and a second image to be spliced; for each first brightness value, Determine the first target brightness value corresponding to the first brightness value; adjust the brightness value of each third pixel point of the first brightness value in the first image according to the first target brightness value corresponding to each first brightness value to The first target brightness value. Because in the embodiment of the present invention, according to each first pixel point of the first brightness value in the first overlapping viewing area, and each second pixel point corresponding to each first pixel point in the second overlapping viewing area The second brightness value of the first brightness value, determine the first target brightness value corresponding to the first brightness value, and then adjust the brightness value of each third pixel point of each first brightness value in the first image to the corresponding first target brightness value The luminance value, therefore, can eliminate the luminance difference at the stitching seam between the first image and the second image.

Description

technical field

[0001] The invention relates to the field of image processing, in particular to a brightness adjustment method and device. Background technique

[0002] Today, with the rapid development of the monitoring system, the scale of the system is getting larger and larger, and there are more and more monitoring points. With the continuous expansion of the monitoring range, the field of view of most image acquisition devices cannot meet the requirements of users, so image stitching technology has emerged as the times require. According to the overlapping viewing area in the two images, the two images are spliced ​​to meet the user's needs for the monitoring range. When splicing images, it is necessary to adjust the brightness of the spliced ​​images.

[0003] A medical digital image mosaic method is provided in the prior art, which adjusts the brightness of the image through a method of brightness histogram equalization, so that the statistical characteristics of t...

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