| 摘要 |
An image enhancement apparatus for performing connection processing for connecting only omissions in an input line figure, including a background figure skeletonization cirucit for skeletonizing background pixel data of binary image f0 obtained by digitizing a line figure into one-line pixel data and the background pixel data, skeletonization being performed to the degree of a one-dot line width, and for generating image f1, a gap filling cirucit for generating image f2 obtained by pixel data of the one-dot line width of image f1 into on-line pixel data, a connection pixel detector for skeletonizing the on-line pixel data of image f2 by a predetermined number of steps and generating image f3, a connection candidate detector for calculating adjacent pixels of the on-line pixel of image f0 according to an AND signal of image f0 and its inverted image f0 and for generating image f4 representing a connection candidate area, a connection pixel thickening circuit for thickening the one-dot line width pixel data of image f3 within image f4 and for generating image f5, and an OR circuit for generating an OR signal of images f0 and f5.
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