Adjusting The Sharpness Of The Image; Selecting The Noise Reduction Filter - Christie M Series User Manual

• Gamma Slope—Defines a slope to be used for the base custom gamma table for a small
section at the bottom of the curve. This slope brings in or out the low level blacks in the
image.

Adjusting the sharpness of the image

Setting detail above the halfway-point can introduce noise in the image. Lower settings can improve a
noisy signal.
This command does not take effect unless the minimum change required in the Detail Threshold
control is reached.
1. Select Image Settings > Advanced Image Settings > Detail.
2. Adjust the following settings:
• Texture Enhancement—Applies texture detail enhancement based on adaptive
horizontal, vertical, and diagonal large edge and small edge enhancement processes.
• Detail Threshold—Selects a filter sensitivity to noise. A higher value may improve noisy
sources especially for higher settings of detail.
• Detail Overshoot—Minimizes ringing on the enhanced edges detail and texture effects.
• Split Screen—Allows a snap shot of the main image to be presented on the right side of
the screen to allow evaluation of advanced image processing features. All resizing controls
are honoured on both images; however, image processing controls only happen on the left
side image. Changing inputs, channels or test patterns disable this control. PIP and Tiling
operation must be disabled prior to enabling this control.

Selecting the noise reduction filter

Improve noisy sources by applying a filter.
A higher value may improve noisy sources, but it soften the image.
1. Select Image Settings > Advanced Image Settings > Noise Reduction Settings.
2. Select a noise filter.
• Block Artifact Reduction—Locates and reduces block edges produced by discrete cosine
transform (DCT) based compression processing.
• Mosquito Noise Reduction—Reduces mosquito artifacts around sharp edges in DCT
based compression by dynamically adapting to image content.
• Split Screen—Allows a snapshot of the main image to be presented on the right side or
lower part of the screen for evaluation of advanced image processing features. All resizing
controls and input card features; such as color/tint etc, are honored on both images.
However, image processing controls such as the detail-texture, noise reduction and
adaptive contrast features, only occur to the left side image. Changing inputs, channels, or
test patterns disables this control.
Split screen cannot be used in conjunction with either picture-in-picture (PIP) or Tiling.
Both PIP and Tiling must be disabled prior to enabling Split Screen control.
• Full Screen Eye-motion Filter—Applies the Eye-Motion Filter to the entire screen, rather
than applying just to the edge blending.
• Eye-motion Filter—Reduces saccadic eye-motion artifacts, sometimes noticeable in edge
blending regions. Too much filtering may result in loss of detail. For best results, adjust
this setting while positioned at the nominal screen viewing distance.
M Series User Guide
020-101948-02 Rev. 1 (08-2018)
Copyright 2018 Christie Digital Systems USA, Inc. All rights reserved.
©
Adjusting the image
45