Photron FASTCAM ultima APX-i2, Hardware Manual

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FASTCAM-ultima APX-i2 Hardware Manual
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4.7. Look-Up Table (LUT) Operation
The look-up table is a reference table that defines the mutual relationship between the
grayscale values of the recorded image data and that of the displayed image on the
computer monitor or video display screen.
The APX-i2 has a built-in hardware LUT that offers a means to enhance the contrast of
image to make the subject look more clearly, or to enhance a particular range of gray
level within a frame to make the subject outstand in the scene. This gray level
manipulation is effective only on the displayed image and the original recorded image
data is not altered in any way.
This section discusses the relationship between the LUT, video output and PC software
of the APX-i2 system.
4.7.1. Operating Preset LUT
The APX-i2 has five (5) preset LUT patterns. All the five patterns are shown here:
D1
This is a LUT pattern whose output is always linear to the input. It is the standard LUT
that is used in usual applications.