to be further perfect

Semiconductor laser seam tracking system in the CCD application


Intensity distribution is uneven. Seen by the geometrical optics of light intensity with AB in 0. ) BB against the principle set b height adjustment ring distribution shown in Figure 3b, the outer band of light where the deleted point A and point where the straight lines of light intensity on the weakest, while the midpoint of AB 0 (center of wedge-shaped band of light Mann b the strongest light, while at 0:00, and A, between the mouth point intensity is relative to 0 is symmetric, and it is using light to bring light to adjust the difference in the distribution of this sensor. It is assumed that a workpiece smooth surface, its surface position in the side l, linear CCD only receive AB into O,ed hardy tøj, the midpoint of the line structure in the light = 0 as the middle band of light from Figure 3b shows the light intensity is very strong, resulting in all the CCD output saturation of its output waveform shown in Figure 2b, can not handle the signal, but if a certain distance down the plate △ d, the plate surface in the surface 2 position, can be seen from Figure 3, this time receiving linear array CCD The signal from point A 'where the line structured light by Figure 3b can be clearly seen, at this time A. at the light intensity of E., significantly higher than the original strength of the light intensity at 0 E is smaller so , without changing the light intensity conditions, by adjusting the distance between the sensor plate and the line array CCD receives light intensity at the weld is reduced. to adjust to the proper distance, CCD can be output as shown in Figure 2c easy to be recognized by the computer processing of the signal in this coarse adjustment is used two programs to improve the adaptability of the CCD sensor 3 laser speckle noise study is the so-called speckle noise in coherent imaging, the signal light of the high degree of coherence and the object surface roughness is relatively light, moderate distance to the observation point has been one of the scattering from the surface echo is composed of many different micro-region or sub-wave coherent group element composition, and different wavelet optical path may vary 0 ~ nh (wavelength), and therefore has a different phase of the sub-waves to interfere,ed hardy kläder, they may have long or destructive phase,ralph lauren skjorter, resulting in granular intensity image,ed hardy suomessa, we called the speckle which reduces the image gray order and spatial resolution, the fine knot dig hidden image, the image of explanatory variation, thereby reducing the image quality and detection ability of the sensor, so it made a number of speckle noise suppression methods generally divided into two categories: one is irrelevant and partial coherence of the long time image processing; the other is the image domain filtering,ed hardy, image post-processing. for a long time image processing and image filtering are compressed nature of speckle noise and the expense of image some of the details. ,ralph lauren danmark, in the tracking system developed by graphics hardware is used in filtering the solution to the problem,franklin and marshall sale, eliminating the benefits of this approach is a lot of complicating the calculation and processing software. Of course,abercrombie københavn, this method also has shortcomings,ed hardy sverige, to be further perfect: 4 Conclusion a. rate sensor light uses LDPage -. home professional standards, scientific and technological personnel services contractors,franklin and marshall, 9, participated in the attack were Kazuya systematic study of current standards implementation class. Made by the organizer and co-presented the implementation of national occupational standards for teaching welding qualification certificate. Ministry of Labour and Social Security identification guide in l career center, has added a training before the Joint Juquan propaganda organization. Which were welded together led to the quasi-/ lone title of the whole Italian peach industry resources Welding Technology Industry Association Secretariat of Chinese workers to build interactive market ~, / a Chinese workers welding Xiepei l Jiao and has set up a technical working committee in the Figure category I call No.: T-27 by the code: D Article ID: 1001 / a, according to the post of Jade China lead in Beijing Xiangshan day session of the Standing Committee set a good twist four times Tangshan not Plenary session = Exile proposed rectification I even welding specialist for the Association water committee members set the overall concept and spirit, and good afternoon, state workers = good fourth meeting of the Association to determine the''implementation of the economic and technical innovation, engineering group into the bin / vehicles to carry out scientific and technological activities; adhere to the three services aim to promote the translation of the cause then the whole 44 On the first meeting of phosphorus 23o3 (2l technical work once I ◇ 2001

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