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In mathematical morphology and digital image processing, a top-hat transform is an operation that extracts small elements and details from given images.There exist two types of top-hat transform: the white top-hat transform is defined as the difference between the input image and its opening by some structuring element, while the black top-hat transform is defined dually as the difference ...
c. 1910 top hat by Alfred Bertiel European royalty, 1859 Austin Lane Crothers, 46th Governor of Maryland (1908–1912), wearing a top hat A top hat (also called a high hat, or, informally, a topper) is a tall, flat-crowned hat traditionally associated with formal wear in Western dress codes, meaning white tie, morning dress, or frock coat.
John Hetherington is an apocryphal English haberdasher.A frequently republished story from the late nineteenth century claims that in 1797 he invented the top hat and caused a riot by wearing it in public in London.
A hat made from the fur of the Karakul breed of sheep, typically worn by men in Central and South Asia. Keffiyah or Ghutrah: Three piece ensemble consisting of a Thagiyah skull cap, Gutrah scarf, and Ogal black band. Kepi: A generic worldwide military hat with a flat, circular top and visor. First seen in central Europe. Kippah or Yarmulke
Juxtaposition in literary terms is the showing contrast by concepts placed side by side. An example of juxtaposition are the quotes "Ask not what your country can do for you; ask what you can do for your country", and "Let us never negotiate out of fear, but let us never fear to negotiate", both by John F. Kennedy, who particularly liked juxtaposition as a rhetorical device. [1]
A top hat is a tall hat worn primarily in the 19th and early 20th century. Top hat, Top Hat, Tophat or Top-hat may also refer to: Top Hat, a 1935 film starring Fred Astaire and Ginger Rogers; Top Hat, a 2011 stage musical adapted from the 1935 film; Top hat (lighting), a theatrical lighting device; Top hat (roller coaster element)
In real-space the filter performs nearest-neighbour filtering, incorporating components from neighbouring y-function values. Despite its ease of implementation, its practical use is limited as the real-space representation of a top-hat filter is the sinc function, which has the often undesirable effect of incorporating non-local frequencies.
A simple example of unmatched contrast analysis is the comparison of efficacy between a new drug taken by some patients and a standard drug taken by other patients. Methods of estimation for SMCV and c +-probability in matched contrast analysis may differ from those used in unmatched contrast analysis.