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| |  | ||  |  ___||  /_   _//   / _ \\   | \| || 
| |/\| ||  | ||__    `-| |,-   | / \ ||  |  ' || 
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|_// \_||  |_____||    |_||     \___//   |_|\_|| 
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Text this: B-spline scale-space of spline curves and surfaces