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Linear and Dark Compression
GO-5000M-USB-UV has a dark compression circuit to improve the signal-to-noise ratio in the dark
portion of the image. This function is OFF as factory default setting and can be ON according to
applications.
Shading Correction mode
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. Compensation is performed using a block grid of 20 blocks (H) x 16 blocks
(V). Each block contains 128 x 128 pixels. The complementary process is applied to produce the
compensation data with less error.
Flat shading correction concept drawing
Shading Mode
Perform Shading Calibration
This is a .exe command to execute a shading correction. The correction data after executing the
shading correction is automatically stored in the used user area.
Blemish compensation
The GO-5000M-USB-UV have a blemish compensation circuit. This function compensates blemishes
on the CMOS sensor (typically pixels with extremely high response or extremely low response).
Pixels that fulfill the blemish criteria can be compensated by adjacent pixel in left column and,
Please refer to the following drawing. As for white blemishes, the automatic detection function is
available and after its execution, the data is stored in memory. The customer can use the data by
setting the blemish compensation ON. For black blemishes, only compensation that has been done
in the factory is available. The number of pixels that can be compensated by the user is up to 256
pixels.
Note: If defective pixels are found consecutively in the horizontal direction, the blemish compensation
circuit does not work.
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GO-5000M-USB-UV
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