Checking apparatus and method for checking holes position and size in a plate

Abstract

A checking apparatus for checking holes position and size in a plate. The checking apparatus includes a memory, an image obtaining unit and a processor. The memory stores a file. The file records an expected number, size and placement of pixels representing the holes and a pixel value. The image obtaining unit obtains an image of the plate. The processor determines a target region in the image according to the values recorded in the file, scans the target region to obtain the number and placement of pixels representing the hole in the target region with a value equal to a pixel value. In addition, the processor compares the obtained number and placement of pixels representing the hole with the expected number and placement of pixels, and generates a signal to indicate the holes defined in the target region are defective if the obtained number and placement of pixels do not match the expected number and placement of pixels. A method for checking holes position and size in a plate is also disclosed.

Dependencies are inferred from the claim text.