Dislocation contrast in electron channelling contrast images as projections of strain-like components
نویسندگان
چکیده
منابع مشابه
Contrast in complex images.
The physical contrast of simple images such as sinusoidal gratings or a single patch of light on a uniform background is well defined and agrees with the perceived contrast, but this is not so for complex images. Most definitions assign a single contrast value to the whole image, but perceived contrast may vary greatly across the image. Human contrast sensitivity is a function of spatial freque...
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To understand how different spatial frequencies contribute to the overall perceived contrast of complex, broadband photographic images, we adapted the classification image paradigm. Using natural images as stimuli, we randomly varied relative contrast amplitude at different spatial frequencies and had human subjects determine which images had higher contrast. Then, we determined how the random ...
متن کاملContrast in complex images 7
The physical contrast of simple images such as sinusoidal gratings or a single patch of light on a uniform background is well defined and agrees with the perceived contrast, but this is not so for complex images. Most definitions assign a single contrast value to the whole image, but perceived contrast may vary greatly across the image. Human contrast sensitivity is a function of spatial freque...
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We propose a method for image registration which seems to be useful under the three following conditions. First, both images are globally and roughly the result of a translation and rotation. Second, some occlusions due to moving objects occur from image 1 to image 2. Third, becauseof changesof illumination, contrast may have changed globally and even locally. Under such unfavorable conditions,...
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ژورنال
عنوان ژورنال: Materials Today: Proceedings
سال: 2018
ISSN: 2214-7853
DOI: 10.1016/j.matpr.2018.03.057