| 摘要 |
PURPOSE:To enable accurate measurement of the volume of an uneven part in a noncontact manner by achieving the three dimensional processing of the uneven part volume of a part or the like by means of a range finder (comprised of a laser slit light source and a CCD TV camera). CONSTITUTION:A laser slit light 2 is projected from a laser slit light source 9 on an object 3. The projected light 2 makes the image of the uneven surface matched with the actual surface shape to be risen over the object 3. The light 2 over the surface of the object 3 is taken in as a slit image by means of a CCD TV camera 10, and stored in an image memory in an image processing device 7. The three dimensional coordinates data from the specified coordinate are calculated for respective points of the slit image in the device 7, and these data are transferred to a microcomputer 6. The volume of one slit on the slit projection position is calculated from these data by means of the microcomputer 6. Then, a slight movement is made of an X-axis table 4 is made through the microcomputer control. The volume of the respective slit is calculated for the whole top surface of the object 3, and the volume of a recessed part is obtained through integration of one slit volume. |
