Hardware Options RICOH

Every scanner offers some hardware features, which can be accessed via this panel. Of course this panel may be different with different scanners. But this one is which we use for all RICOH scanners. Depending on the selected color depth some of the features may be disabled.


Brightness
A higher brighness results in a lighter image and vc. vs.
 
Threshold
Sets the threshold when a scanned pixel is displayed as black pixel. Only available in Line Art modes.
 
Contrast
At a higher contrast setting, the scanner emphasizes black and white, but reduces the number of gray shades. A lower contrast would result in a softer image.
 
Filter
Only available in Grayscale mode.
None
Does nothing.
Averaging
Applies some kind of mean filter during the scan.
MTF
 
Mirror
Mirrors the image.
 
Invert
Inverts the color channel (even in gray or bw). The result is a negative image.
 
Binary Filters
Only available in 1 Bit modes.
Noise
Eliminates independent black and white points (with given max size).
Smoothing
Smoothes uneven edges.
Line Bolding
Enhances thin lines and characters. Only available In Line Art modes.
Edge Extraction
Will reduce image to its outlines. Only available In Line Art modes.
Dither
Simulates shades of gray by using certain patterns. May be used when the image should be printed on 1 bit devices (e.g. laser printers).
 
Gamma
To select the following gamma correction settings.
Normal
Emphasize contrast slightly to improve a scanned image.
Soft
Reduces contrast of scanned image.
Sharp
Emphasize contrast to sharpen image.
Linear
No changes to image.
Auto photo / letter
Only available with optional image processing unit. Detects photo (Dither) and text (Line Art) areas. If scanned at once it will apply the different scan modes automatically.
 
Dynamic Threshold
Only available with optional image processing unit. The scanned image is automatically binary coded with an appropriate threshold. The scanner discriminates a background color and decides which threshold to use.

Note: These features enhance or manipulate image data before they are transferred into the computer system. Therefore there is no way to revert this conversions, than to repeat the scan with different values. This may be faster than a software operation on images.


See also