SP-5000M-PMCL / SP-5000C-PMCL
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Fig.32 LUT data processing method
8.4 Gamma
This command is used set gamma between gamma 0.45 and gamma 1.0 (OFF).
8 steps are provided. The gamma value is an approximate value.
Fig.33 Gamma correction
8.5 Shading Correction
This function compensates for shading (non-uniformity) caused by the lens or the light source
used. This compensation can be performed even if shading issues are not symmetrical in
horizontal and/or vertical directions.
There are two methods of correction.
Flat shading correction:
The method to compensate the shading is to measure the highest luminance level in the image
and use that data as the reference. Luminance levels of other areas are then adjusted so that
the level of the entire area is equal. The block grid for compensation is 20 (H) x 16(V) and each
block contains 128 x 128 pixels. The complementary process is applied to produce the
compensation data with less error.
Fig.34 Concept drawing of flat shading correction
Color shading correction (For SP-5000C-PMCL only):
In this case, R channel and B channel are adjusted to match with G channel characteristics. The
block grid for compensation is 20 (H) x 16(V) and each block contains 128 x 128 pixels. The
complementary process is applied to produce the compensation data with less error.
Adjustable range
Less 30%