IMAGE INPUT DEVICE
PURPOSE:To provide an image input device capable of eliminating uneven lighting without performing troublesome threshold setting. CONSTITUTION:A slope generator 19 outputting the difference of a Laplacian as slope when the multiplication result of adjacent picture elements is negative and outputting...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:To provide an image input device capable of eliminating uneven lighting without performing troublesome threshold setting. CONSTITUTION:A slope generator 19 outputting the difference of a Laplacian as slope when the multiplication result of adjacent picture elements is negative and outputting zero as the slope when the multiplication result of adjacent picture elements is not negative, an adder 20 adding the slope from the slope generator 19 to intensity obtained after the re-construction of one of the adjacent picture elements to newly obtain the intensity after the re-construction of the other of the adjacent picture elements, and a re-construction position controller 14 shifting the position of the adjacent picture elements and obtaining the intensity after the new re-construction in order, are provided. |
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