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.
In PCB SMT assemble automatic inspection, components model should be inspected by their character image. Conventional inspection method suffered from high false detection rate, particularly for same model components with different fonts. Improved method was proposed with position correction, quick image matching and ANN based verification for components with different fonts. Experimental results show...
Creep drift of piezoelectric actuators in solder paste 3D inspection was difficult to be accurate calibrated. Connected with actuated projecting grating, this paper proposed a new calibration method that a quarter-cycle sinusoidal grating was used for projection to substitute normal cycle grating and two phase-shift sinusoidal gray images were matched to calculate displacements. As calibration conditions...
Defects inspection for solder paste deposit in PCB SMT assembly can depress final fault rate and save rework cost. The solder paste deposit inspection needs both 2D analysis and 3D volume measurement. Conventional methods suffered slow speed and low reliability. This paper proposed inspecting by grating projection phase shifting profilometry 3D scale fusion with 2D image features, which help phase...
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.