[0034] Hereinafter, certain embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the description of the present invention, when it is considered that certain detailed descriptions of related technologies may unnecessarily dilute the essence of the present invention, these detailed descriptions are omitted.
[0035] figure 2 It is a laser imaging module for a non-contact measuring device according to one aspect of the present invention. Such as figure 2 As shown, the laser imaging module 100 according to one aspect of the present invention includes: a laser generator 110 for irradiating a cross-shaped laser beam 111 on the object to be measured; a pair of cameras 120 and 130 for irradiating the object to be measured The laser beam images 121, 131 are photographed; and a single fixing member 140 on which the laser generator 110 and the camera pair 120, 130 are mounted as a whole. The laser generator 110 may be installed in the housing 150, which is connected to the fixing member 140 as a whole, so that the laser generator 110 may rotate around the intersection of the cross-shaped laser beam 111. The camera pair 120, 130 is mounted on the fixing member 140 so that the first imaginary line connecting the center of the first camera 120 and the center of the laser generator 110 and the second imaginary line connecting the center of the second camera 130 and the center of the laser generator 110 The imaginary line is vertical.
[0036] Using the laser imaging module 100 structured as described above, such as image 3 As shown, the cross-shaped laser beam 111 is irradiated by the laser generator 110 onto the object to be measured, that is, the curved plate 10. In this way, the cross laser beam 111 emitted from the laser generator 110 can be regarded as a vertical line beam and a horizontal line beam separately, wherein one of the camera pairs 120, 130 can be used to obtain the laser beam image from the vertical line beam, and the other camera can be used. To obtain the laser beam image from the horizontal beam. In doing so, a selective filtering operation can be performed on one of the vertical wire harness portion and the horizontal wire harness portion.
[0037] The filtering can be performed by placing a filtering device on the path of the image traveling to the cameras 120 and 130, or performing a filtering operation on the image data obtained by the cameras 120 and 130. The present invention will be explained by an embodiment employing the latter method of filtering image data. If in one of the camera pairs 120 and 130, the vertical line beam of the cross laser beam 111 is obtained as the vertical image part and the horizontal line beam is obtained as the horizontal image part, then in the other camera, the vertical line beam of the cross laser beam 111 is obtained as The horizontal image part is obtained and the horizontal wire harness is obtained as the vertical image part.
[0038] Therefore, when the image data obtained by the camera pairs 120 and 130 are filtered, the vertical image portion will be filtered and removed from the camera pairs 120 and 130 respectively to generate the three-dimensional shape measurement data of the curved plate 10. Will refer to later Figure 4 The filtering process is explained in more detail.
[0039] By installing the laser generator 110 in the housing 150 connected to the fixing member 140 as a whole, the laser generator 110 can be rotated around the intersection of the cross-shaped laser beam 111, and the laser generator 110 can be rotated to form a cross-shaped laser. The optical axes of the vertical and horizontal beams of the beam 111 are aligned with the optical axes of the cameras 120 and 130.
[0040] Figure 4 It is a block diagram showing a non-contact measurement device according to one aspect of the present invention.
[0041] Such as Figure 4 As shown, the non-contact measurement device according to one aspect of the present invention includes: a laser imaging module 100, which includes a laser generator 110, a camera pair 120, 130, etc.; an image filtering unit 210, which can filter the data obtained by the cameras 120, 130 Image data to remove the vertical image part; measurement data generation unit 220, which extracts a certain measurement point data from the processed image data filtered by the image filtering unit 210, and expresses the measurement point data as a curved surface through model operations to generate three-dimensional shape measurement Data; and a control unit 230 that manages the operation of the laser generator 110, the camera pair 120, 130, the image filtering unit 210, and the measurement data generating unit 220.
[0042] In the non-contact measurement device, the first imaginary line connecting the center of the first camera 120 and the center of the laser generator 110 is perpendicular to the second imaginary line connecting the center of the second camera 130 and the center of the laser generator 110. Therefore, if, for example, in the first camera 120, the vertical line beam of the cross laser beam 111 is obtained as the vertical image part and the horizontal line beam is obtained as the horizontal image part, then, in the second camera 130, the vertical line beam of the cross laser beam 111 is obtained as the horizontal The image part is obtained and the horizontal harness is obtained as the vertical image part.
[0043] Then, under the control of the control unit 230, the image filtering unit 210 filters and removes the vertical image portion when filtering the image data obtained by the cameras 120 and 130. The measurement data generation unit 220 extracts certain measurement point data from the filtered image data under the control of the control unit 230, and then expresses the measurement point data as a curved surface through model operation to generate three-dimensional shape measurement data.
[0044] Although the spirit of the present invention has been described in detail based on a specific embodiment, this embodiment is only for illustrative purposes and does not limit the present invention. It should be understood that those of ordinary skill in the art can make changes or modifications to the embodiments without departing from the scope and spirit of the present invention as described in the appended claims.
