Knoll Systems LED1081 user manual Noise Reduction Sub-Menu

•Noise Reduction: To apply noise reduction to the source signal, select Noise Reduction from the IMAGE menu and press ENTER.

Figure 4-13: Noise Reduction Sub-Menu

Noise Reduction is useful for clearing up noisy images from interlaced SD sources.

•Noise Reduction (Simple Mode): Use the or buttons to adjust as desired, keeping in mind that reducing noise (which reduces high frequencies) may also soften the image.

•Noise Reduction Mode: Noise Reduction Mode allows or prevents access to the detailed noise reduction con- trols in this menu.

In most cases, Simple mode provides a sufficient level of control to produce the best picture from the most popu- lar sources. In Simple mode, only the Noise Reduction (top-most) slider is adjustable; the others are grayed out. Choose Advanced mode if you need more precise control over noise reduction. In Advanced mode, only the top slider is grayed out.

•General Noise Reduction: General Noise Reduction is temporal and spatial noise reduction for all types of inputs. The scene is analyzed for differences from frame to frame and reduces those differences that are not de- termined to be motion.

•Block Artifact Reduction: Use this control to reduce or eliminate so-called “block artifacts” in MPEG-compressed video signals (digital broadcasts or DVDs). Set it as needed to minimize distortion within horizontal and vertical block boundaries.

•Mosquito Noise Reduction: Use this control to reduce or eliminate so-called “mosquito noise” in MPEG-com- pressed video signals. Set it as needed to minimize distortion around the edges of moving objects, moving artifacts around edges and/or blotchy noise patterns superimposed over the objects.

•Overscan: Some television programs are produced based on the assumption that older television sets may not display the outer edges of the broadcast picture area. Overscan effectively hides these inactive, outer edges of the image. Choose one of the following:

•Off: This setting leaves the image as-is.

•Crop: This setting adds a mask at the left and right edges of the source active image equal to 3% of the dis- played horizontal resolution, and at the top and bottom edges equal to 3% of the displayed vertical resolution.

•Zoom: This setting adds a factor to the scaling of the source active image so that the vertical and horizontal resolutions are 106% of the size determined by the aspect ratio function. Anything outside of the original image area is removed.

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