| 摘要 |
<p>A method for capturing an image from a surface of a drill bit, comprising the following steps: 1) placing a drill bit onto a rotary base for rotation; 2) making a charge-coupled device to emit a coaxial light using a coaxial optical lens to the surface of one side of the drill bit; 3) utilizing a moment when the rotary base rotates the drill bit by one distance unit, the charge-coupled device capturing an image of the lateral surface, as such, when the rotary base rotates the drill bit by multiple distance units, multiple continuous images of the surface of the drill bit are produced; 4) finding a characteristic part of each of the continuous images of the surface of the drill bit, and extracting parts having the characteristic to form another image; and, 5) composing each of the image having the characteristic parts into an expanded image.</p> |
