Brightness; Contrast; Color Saturation; Hue (Tint) - DVDO iScan Duo Owner's Manual

The Picture Controls settings are briefly described below:
•

Brightness

Adjust the black level of the overall image from the iScan Duo. When you make an adjust-
ment to brightness, all levels of brightness, from black to peak white, are shifted up or down.
The Brightness control is complimentary to the Contrast control which will be described next.
Contrast adjusts the level of white.
•

Contrast

Video contrast works by adjusting the level of white. Contrast is complimentary to the
Brightness control. Contrast controls should be used carefully because if overly adjusted,
some details in lighter areas can become less visible.
•

Color Saturation

Color Saturation refers to the mix of "color" vs. "brightness" in the picture. Increasing Color
Saturation makes colors look more vivid. Decreasing Color Saturation makes colors look
"washed out." Changes to either Brightness or Contrast can change your Color Saturation.
You can use this control to balance the mix of color verses brightness.
•

Hue (Tint)

The changes made with a Hue control effect what most people would refer to as "color." Hue
controls cause a shift in color spectra. Sometimes this control is called "Tint". Hue changes
color without changing Luminance (picture brightness) or color saturation.
•

Detail Enhancement

Increase Detail Enhancement to enhance or sharpen the fine details in an image such as
grass or the texture of a plaster wall.
Decrease Detail Enhancement to reduce noise in a noisy image.
•

Edge Enhancement

Increase Edge Enhancement to sharpen object edges in an image.
Decrease Edge Enhancement to soften object edges in an image.
•

Mosquito NR

The term "noise" in the context of video images refers to unwanted or unnatural looking
elements that find their way into video signals. "Mosquito Noise" is a particular type of image
noise that is caused by video compression processing. Video compression is common for all
types of transmitted video, including cable, satellite, and over-the-air broadcasts. Compres-
sion is also used with DVD and other prerecorded media. The visibility of Mosquito Noise will
vary. In some cases, it can become objectionable. Mosquito Noise will be more obvious in
standard definition video, although it is sometimes present in high definition video.
The iScan Duo's Mosquito NR feature removes mosquito noise present in an image. There
are three controls.
Off
On-Low Used when there is a small amount of mosquito noise present in the image.
On-High Used when there is significant amount of mosquito noise present in the image.
Mosquito NR should only be enabled when there is noise in an image since it will remove
details in a good image.
17
No noise reduction is applied. This is the normal setting for a good quality image.