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X光探伤电视系统虽然具备节省X光软片和可在线探伤等优点以外,还存在着图像分辨率不很高的问题。其图像分辨率不很高的主要原因是由于X光所激发的二次射线造成的,这是一种随机的噪声干扰。利用在计算机图像处理中的叠加平均法可有效的去除这种噪声干扰,从而提高X光探伤电视的图像分辨率。电视图像的数字化需要高速的信号采集系统。用硬件构成的图像存贮体可实现高速的图像信号采集,并结合开窗口技术使得X光探伤电视的成本降低,为高分辨率X光探伤电视的广泛应用创造了有利的条件。这些对保证产品质量具有十分重要的意义。
Although the X-ray detection television system has the advantages of saving X-ray film and online flaw detection, there is still a problem that the image resolution is not very high. The main reason for its poor image resolution is due to the secondary rays excited by X-rays, which is a random noise disturbance. The use of superposition averaging in computer image processing can effectively remove such noise interference, thereby enhancing the image resolution of X-ray inspection television. The digitization of television images requires high-speed signal acquisition systems. The image memory with hardware can realize high-speed image signal acquisition, and combined with the open window technology, the cost of X-ray detection television is reduced, which has created favorable conditions for the wide application of high-resolution X-ray inspection television. These are of great importance to ensuring product quality.