Patent ID: 8908956

Claim:
A method for inspecting surface defect of metal balls by image recognition comprising the steps of: feeding metal ball: feeding a metal ball to a conveying apparatus, the conveying apparatus comprising a chassis, a rotary disc made of light-transmitting material rotatably disposed on the chassis, and a light source unit, the rotary disc being formed with plural holes for accommodation of the metal ball, the metal ball having a first surface which is visible from the holes, the light source unit being located at one side of the rotary disc to enable the first surface of the metal ball to produce uniform brightness; capturing image for a first time: utilizing an image capturing apparatus to capture and store an image of the first surface of the metal ball; and comparing image: comparing the image of the first surface of the metal ball with respect to image data in a database to establish data related to acceptable metal balls, unacceptable metal balls and kinds of the unacceptable metal balls.