Shading Correction
The following shading correction modes are available on the camera.
■ FlatShading
Correction is performed using the area of the screen with the highest
brightness level as the reference, and adjusting the brightness levels of the
other areas to match this level.
128
128
8192 (Total size 64blocks)
5504
(Total
Size
43blocks)
8192 (Effective pixels)
5460
(Effective
pixels)
SP-45001M-CXP4/SP-45001C-CXP4
Shading
The ShadingCorrection function corrects non-uniformity (i.e., shading) in the amount of
light generated by the lens and lighting equipment. Using this function allows correction
even if top, bottom, left, and right shading is not symmetrical in relation to the center of
the screen (H, V).
This function can be used even when the effective image area is limited (an area with
both Width and Height set to more than 128 must be configured) by the ROI function. In
such cases, the correction area is included in the image area configured by the ROI.
For a full image, the number of correction blocks is 64 (H) × 43 (V) blocks and
calculation errors in the correction data are minimized due to the small interpolation
areas. Each block is 128 × 128 pixels. The total size of the blocks is 8192 (H) × 5504
(V), but the actual number of effective pixels for the camera is 8192 (H) × 5460 (V). The
ineffective peripheral areas will be deleted internally on the camera automatically.
When using ROI, the number of blocks and the number of pixels that comprise each block
differ from a full image.
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