Method for rapidly mapping and imaging pseudo-colors through ultrasonic microscopic technology

Abstract

The invention relates to a method for rapidly mapping and imaging pseudo-colors through an ultrasonic microscopic technology. According to the method, high-frequency ultrasound can be used for micro-imaging of the surface and the sub-surface of the material to be tested and a fine structure in the material at a certain height. The method has the characteristics of high sensitivity, high resolution, intuitive images and the like and is suitable for the ultrasonic inspection and measurement field of electronic packaging, composite materials and medical application. The method comprises the following steps: obtaining peak data in each scanning point data gate by setting data acquisition parameters and scanning parameters of a specimen to be tested and arranging gates according to scanning signals A, transforming data values into gray values, transforming different gray values into different RGB (red, green and blue) color values according to a linear mapping function, and rapidly mapping and generating a pseudo-color image subjected to ultrasonic microscopic detection, thus relatively easily recognizing image details and the target. According to the method, a data acquisition technology, an image reconstruction technology and an automation technology are integrated, the pseudo-color ultrasonic image of the internal structure of the specimen to be tested can be obtained, and a supplementary means is provided for detecting sizes, shapes and distribution of defects existing the specimen to be tested.

Description

1. Technical field [0001] The invention belongs to the technical field of non-destructive testing, relates to the field of ultrasonic imaging, in particular to a pseudo-color rapid mapping imaging method for ultrasonic microscopic testing. 2. Background technology [0002] Ultrasonic testing technology has become a non-destructive testing technology widely used at home and abroad due to its high detection sensitivity, ability to detect internal defects of objects, wide range of detection objects, accurate defect location and low cost. Ultrasonic images can provide intuitive and a large amount of information, directly reflect the acoustic properties of objects, and display the shape of object defects, and determine their location, size and nature, and have automatic data collection, automatic data processing, automatic evaluation of results and perfect data records And other functions, so ultrasonic imaging technology is the development trend of modern ultrasonic testing. ...

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Problems solved by technology

After querying the patent database of the Wanfang Data knowledge service platform, the Chinese invention patent CN201110149091.1 provides an ultrasonic color imaging method and device, but it needs to perform weighted processing on the color image data after color mapping through the fusion coefficient, and the mapping relationship and Color display algorithm is more complex

Chinese invention patent CN200610109435.5 provides an ultrasonic color imaging method and device for expressing ultrafine structure and continuous variation, but it uses different forms of multivariate functions to calculate RGB components, and the color mapping process is time-consuming

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