Detecting and classifying blemishes on the transmissive surface of an image sensor package

摘要

A method for determining blemishes in or on the transmissive surface of an image sensor package and determining if such blemishes are acceptable for use of the image sensor package including capturing a digital image of a predetermined scene using the image sensor package and storing such digital image in a memory, identifying blemishes formed in or on the transmissive surface by processing the digital image data using a series of image processing functions, and classifying the blemishes from the digital image and determining if the image sensor package is acceptable for use.