Developing degree and attitude of cracks in coal seams can be observed by sound wave scan images and the dynamic properties can also be analyzed providing gist for comprehensive appraisal of container beds of coal bed methane.

Thus there is non-uniform background in ultrasonic C-scan image.

The effect of sampling step on the resolution of ultrasonic C-scan image was studied, and an edge adaptive image interpolation method based on the local covariance feature was presented to improve the C-scan image resolution.

By the methods of ultrasonic scanning image,density,resistance,sonic speed and hole diameter tesing mehtods the effect of subsidence control fulfilling with cement and coal powder.

The control circuits and software systems for image scanning and processing were introduced.

We defined two species of index to measure the stability of the image scanning ways.

This paper defines two kinds of measurement parameter to describe the stability of the image scanning data for the online traffic image.

A digital method for the correction of geometric distortion in scanned image;

Study on improving success rate of edge detection for scanned image of bacteriostatic ring

This paper presents a new algorithm of adherence separation of linear features to scanned image.

So it is necessary to know the effect of hydration films on scanning images.