Lookup Table Content Definition Methods
Methods to define the content of a lookup table
The Coaxlink Driver provides four methods to define the transfer function of a lookup table.
- Response Control
- Emphasis
- Threshold
- Table
Response Control Method
This method defines the transfer function of a lookup table by means of four parameters: Contrast
, Brightness
,
Visibility
and Negative
.
The Contrast
and Brightness
parameters provide controls similar to the brightness and contrast controls of a
television monitor. For more information, refer to Contrast Parameter and Brightness Parameter.
The Visibility
parameters provides control to smoothly reshape the transfer function to cover the full input range. For more
information, refer to Visibility Parameter.
The Negative
parameter allows transforming an image into its negative image. For more information, refer to Negative Parameter.
Emphasis Method
This method defines the transfer function of a lookup table by means of two parameters: Emphasis
and
Negative
.
It allows transforming an image using a power-law expression also known as γ – Gamma – function. For more information refer to Emphasis Parameter.
The Negative
parameter allows transforming an image into its negative image. For more information, refer to Negative Parameter.
Threshold Method
This method defines a double threshold transformation law by means of five parameters: SlicingLevel
,
SlicingBand
, LightResponse
, BandResponse
, DarkResponse
.
For more information, refer to Threshold Method Parameters.
Table Method
This method defines the transfer function of a lookup table in a tabular form.