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A method for improving the contrast of images, which, by the addition of pulsed partial images are generated in espi - art
A method for improving the contrast of images, which, by the addition of pulsed partial images are generated in espi - art
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机译:一种改善图像对比度的方法,该方法通过添加脉冲局部图像而产生
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摘要
To improve the contrast of images obtained using the pulsed image-addition ESPI technique and relative to a mechanically stressed object, a preliminary measuring cycle is performed, with the object in the unstressed condition, to obtain a predetermined number of interference images (110-160) differing from one another by a controlled phase shift of a fraction of the pulses traveling along one of the branches of the interferometer; a mean luminous intensity value is calculated (170) from the interference images, is memorized (180), and is subtracted (220) from each of the interference images obtained during the actual measuring cycle to improve the contrast of the images.
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