Image display method for synthetic aperture sonar system

Abstract

The invention relates to an image display method for a synthetic aperture sonar system, which comprises the following steps: setting a cycling storage unit with the length being M, wherein the length M is at least more than or equal to the vertical resolution of a display; taking the maximum value Amax from image data of a batch of seabed targets output by a signal processing system each time at a time, and storing the maximum values Amax into the cycling storage unit in sequence; taking the maximum value Zmax of the cycling data group each time when the cycling data group in the cycling storage unit automatically updates; and quantifying a corresponding gray scale 255 with the Zmax, wherein the value of any point in the image data is Zi, the corresponding gray scale data is Zi / Zmax * 255, and the optimal visual effect can be achieved according to the needed palette configuration. Furthermore, the brightness can be adjusted through adjusting the multiplication coefficient of the maximum value so as to adapt to different needs. The invention adopts the maximum value of the current data on the display for quantification, thereby achieving the proper image display effect.

Description

technical field [0001] The invention belongs to the field of synthetic aperture sonar image signal processing, in particular to an image display method used in a synthetic aperture sonar system. Background technique [0002] Synthetic aperture imaging sonar is an acoustic imaging device. It uses an acoustic "antenna" to emit sound waves at multiple positions to irradiate the measured object, and receives the reflected sound waves, and forms a virtual large "antenna" through signal processing. , so that the imaging effect can be obtained with a resolution much higher than that of using an "antenna". It is mainly used for seabed surveying and mapping, target salvage and other operations. It receives the original data through the signal processing system for processing, and obtains image data of seabed targets, etc., and displays them on the display screen. The existing display method is scrolling down in a "waterfall" manner, and the new image data is displayed on the screen....

AI Technical Summary

Problems solved by technology

To calculate the maximum value of the current screen image data, it is necessary to compare all the image data. For example, for a display with a resolution of 1024*768, it is necessary to compare 1024*768 image data to obtain the maximum value. The realtime scrolling relative to the image is huge and can't be calculated at all

[0004] Existing systems all use the maximum value of part of the image data, combined with the method of manual adjustment to display, so sometimes the display feels bright and sometimes the image is dark, and manual adjustment is always required, making it difficult to achieve the best visual effect

Images