| 摘要 |
<p>An image obtained by picking a pressed portion up is subjected to a binary-coding process so that the terminal t in a metal and luster portion is expressed with "white" pixels and the other non-luster portion, such as the sheath of the electric wire a and the connector C, is expressed with "black" pixels. A window w1 is set which is in contact with the leading end position X realized when the electric wire a of the binary image is normally pressed. Another window w2 distant at a deep portion of a cavity s is set. When pressing is normally performed, the inside portion in the first window w1 completely correspond to the sheath of the electric wire a. Therefore, pixels a are completely "black" pixels. Since the electric wire a is not introduced into the second window w2, pixels are completely "black" pixels. A product deviated from the foregoing state is determined as a faulty product. Thus, the appearance inspection about the state of connection of the electric wire a can automatically be performed in a non-contact manner. As a result, reliable and efficient inspection can be performed. <IMAGE></p> |
