The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A series of images of the whole wheel surface was captured by the imaging system. Median filtering and image contrast enhancement were used on the defect images, and then canny edge detection based on gradient histogram was done in further details. The images after edge detection are used for eight-neighbor boundary tracking, to obtain the sizes in-pixel of defects. The experiment system is set to...
A weighted imaging method of an ultrasonic synthetic aperture focusing technique based on the correlation of signals is presented. The correlation between the ultrasonic echo signals within synthetic aperture range is analyzed, and the distribution of the correlativity coefficient is confirmed to parabolic equation in the region of defect echo waves. The signal amplitude correlativity coefficient...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.