| 摘要 |
An apparatus and method for detecting and handling thin lines in a raster image includes reading depth values for each pixel of an nxm block of pixels surrounding a substantially central pixel. Differences are then calculated for selected depth values of the nxm block of pixels to yield multiple difference values. These difference values may then be compared with multiple pre-computed difference values associated with thin lines pre-determined to pass through the nxm block of pixels. If the difference values of the pixel block substantially match the difference values of one of the pre-determined thin lines, the pixel block may be deemed to describe a thin line. The apparatus and method may preclude application of an anti-aliasing filter to the substantially central pixel of the pixel block in the event it describes a thin line.
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