Linear Remap Node

The Linear Remap node enables you to convert image data to and from 8-bit, 16-bit, and floating point representations.

The Linear Remap node automatically determines the data format of an input node and displays it in the In column. You simply select the output format from the Out column popup menu.

Optimizing Linear Conversion

The Linear Remap node also enables you to rescale linear data, which can be helpful for data optimization. For example, assume that you wish to convert 16-bit data to 8-bit data. The 16-bit colorspace ranges from 0 to 65535 bits; 8-bit colorspace ranges from 0 to 255 bits.

However, in this particular case, imagine that your 16-bit data occupies a range of only 50 to 5050. The linear conversion tables of the Linear Remap node enable you to scale the actual range of your input data (50 to 5050) down to the full range of the 8-bit color space (0 to 255). This saves you from trying squeeze data in the range of 5051 to 65535 into the relatively narrow 8-bit color space and enables you to spread the actual range of your input data over the maximum possible range of the output data format you specified.

Tip:
To find out the useful range of any specific imagery, use the Inspect panel or the Histogram utility monitor available in all Chalice monitors.

Linear Remap Parameter Tab

In Column

The Linear Remap node automatically senses the data file format of the input node and displays it in the In column.

Out Column

The Linear Remap parameter tab allows you to specify the output data format. Click on the popup menu to select 8-bit, 16-bit, or Float(ing point) data representations.

Using the Cascade Buttons

The Cascade button spares you from repeatedly keying the same value into the Red, Green, Blue, Alpha, and Other channel parameters.

When you click the Cascade button, Chalice replicates the value you key in for the Red channel parameter throughout the Green, Blue, Alpha, and Other channel data entry boxes .




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