Fujitsu M3097DG Table 3.13 Parameter of Image Emphasis

Image Functions

(1)Image Emphasis

[A.4.7 SET WINDOW command / Image Emphasis]

Image Emphasis performs filtering to emphasize image edges or to smooth (IPC-2D) or remove background noise (IPC-3D). If text edges are not clear or faint, turn on the Image Emphasis. Three levels of Image Emphasis, High/Mid/Low, are available. As a side effect, Image Emphasis also emphasizes the noise. It is better to set Image Emphasis higher to obtain good image, until the noise is not perceptible.

In IPC-2D, Smooth is also available which works as negative emphasis so image edges becomes faint even if original is ordinary sharp.

In IPC-3D, Background Removal is available instead of Smooth. Background Removal is effective to remove background tones. For the case of the texts surrounded by halftone pattern such as dither, background should be removed to emphasize the text. Background is useful for such cases.

The algorithm of Smooth and Background Removal is deferent but the outputs are similar.

Table 3.13 Parameter of Image Emphasis

Option	Parameter	Value	Effect	Default
IPC-2D	OFF	X’00’	No emphasis and smoothing
	High	X’01’ to X’2F’	High emphasis
	Mid	X’30’ to X’4F’	Medium emphasis	OFF
	Low	X’50’ to X’7F’	Low emphasis
	Smooth	X’80’ to X’FF’	Negative effect of emphasis
IPC-3D	OFF	X’00’	No emphasis and background
			removal
	High	X’01’ to X’2F’	High emphasis	Off
	Mid	X’30’ to X’4F’	Medium emphasis
	Low	X’50’ to X’7F’	Low emphasis
	Background	X’80’ to X’FF’	Removes noisy background
	removal

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