METHODOLOGIES AND IMAGE PROCESSING TECHNIQUES FOR AUTOMATIC MARK/LABEL VERIFICATION AND RECOGNITION
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Nov-28
Graylevel digital image processing techniques are employed in automatic visual interpretation and recognition of product marking and semiconductor package inspection. A mark or label is a group or region of n alpha-numeric characters or patterns, including logos and other symbols. Any solid- connected contiguous blob is defined as a single character within the label. The characters can be darker or lighter than the background on which they appear.