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A keyword assignment system is provided to assign keywords when a digitized image of a document is created. The keyword assignment system includes a digitizer to generate the digitized image from the input document. A keyword entry system determines a keyword to be associated with the digitized imag

A keyword assignment system is provided to assign keywords when a digitized image of a document is created. The keyword assignment system includes a digitizer to generate the digitized image from the input document. A keyword entry system determines a keyword to be associated with the digitized image. A linker generates linking information that associates the keyword with the digitized image. A database is provided to store the digitized image and linking information.

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A keyword assignment system is provided to assign keywords when a digitized image of a document is created. The keyword assignment system includes a digitizer to generate the digitized image from the input document. A keyword entry system determines a keyword to be associated with the digitized imag

A keyword assignment system is provided to assign keywords when a digitized image of a document is created. The keyword assignment system includes a digitizer to generate the digitized image from the input document. A keyword entry system determines a keyword to be associated with the digitized image. A linker generates linking information that associates the keyword with the digitized image. A database is provided to store the digitized image and linking information. t to 2 pixels can be measured from center of said primary pixel to center of each of said first four pixels, respectively. 4. The method of claim 3, wherein a length equivalent to 22 pixels can be measured from said center of said primary pixel to center of each of said second four pixels, respectively. 5. The method of claim 1, wherein a length equivalent to 22 pixels can be measured from center of said primary pixel to center of each of said second four pixels, respectively. 6. The method of claim 1, wherein a length equivalent to one pixel can be measured from center of said primary pixel to center of each of said first four pixels, respectively. 7. The method of claim 6, wherein a length equivalent to 2 pixels can be measured from said center of said primary pixel to center of each of said second four pixels, respectively. 8. The method of claim 1, wherein a length equivalent to 2 pixels can be measured from center of said primary pixel to center of each of said second four pixels, respectively. 9. The method of claim 1, said four filtering operations being performed with a one-dimensional high pass filter in which coefficient of filter tab is -1, 3, -1 in sequence. 10. A method, comprising the steps of: arranging a primary pixel to be processed with edge enhancement in accordance with a raster scanning order, said primary pixel being selected from a plurality of pixels of an image; selecting said primary pixel and eight additional pixels from among said plurality of pixels, said eight pixels being adjacent to said primary pixel and including a first four pixels and a second four pixels, said first four pixels being located in a right, left, up, and down direction respectively in relation to said primary pixel, said second four pixels being located in diagonal directions corresponding to 45°, 135°, 225°, and 315° respectively in relation to said primary pixel; calculating a difference between a maximum gray level value and a minimum gray level value of said eight pixels; determining when said calculated difference is greater than a predetermined reference difference; when said calculated difference is less than said predetermined reference difference, outputting said primary pixel not modified; when said calculated difference is greater than said predetermined reference difference, performing the substeps comprising of: determining four enhancement values by performing a first filtering operation in a column direction, a second filtering operation in a row direction, a third filtering operation in a 45° direction, and a fourth filtering operation in a 135° direction, each one of said four filtering operations resulting in one of said four enhancement values, each of said four filtering operations centering on said primary pixel; determining when gray level value of said primary pixel is greater than average gray level value of said four enhancement values; when said primary pixel gray level value is greater than said average gray level value, modifying said primary pixel by replacing said primary pixel gray level value with largest gray level value of said four enhancement values; when said primary pixel gray level value is less than said average gray level value, modifying said primary pixel by replacing said primary pixel gray level value with smallest gray level value of said four enhancement values; and outputting said primary pixel modified. 11. The method of claim 10, said first filtering operation in said column direction including said primary pixel and said two pixels located in the up and down direction in relation to said primary pixel, said second filtering operation in said row direction including said primary pixel and said two pixels located in the right and left direction in relation to said primary pixel, said third filtering operation in said 45° direction including said primary pixel and said two pixels located in the 45° and 225° direction in relation to said primary pixel, said