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Mechanical and Electrical
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| Converts the output resolution | |
| Resolution conversion | ||||
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| Enlargement or reduction in the main scanning | |
| Magnification Change |
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| in main scanning |
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| Centers the image data by shifting it in the main | ||
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| Centering in main |
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| scanning direction. | ||
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| Edge emphasis and smoothing are carried out. | ||
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| MTF correction | ||||
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| • Edge Emphasis (Text Image) | |
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| The outlines of characters and fine lines are made | |
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| sharper as they appear on the copy by correcting the | |
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| MTF (modulation transfer function) characteristics | |
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| (resolution). | |
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| *MTF: Modulation Transfer Function | |
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| • Smoothing (Photo Image) | |
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| Image noise contained in the solid area of the image | |
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| is reduced to smooth the image, thereby improving | |
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| image quality of photos. | |
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| Contrast | |
| Linear γ | conversion | |||
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| (γ : Density reproduction curve) | |
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| Enhances reproduction of characters and fine lines | |
| Nonlinear conversion | ||||
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| that are low in contrast. | |||
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Conversion into binary
Converts
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B Binary Image | C Grayscale Image |
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