APPLIED OPERATIONS
/Image Acquisition
OPERATION INSTRUCTIONS
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2-2-1-6 Acquiring Image in Accumulation Mode
When the image is dark or noisy, use an accumulation mode in image acquisition to improve
the image quality.
Kalman Accumulation and Peak Accumulation
z
The Kalman accumulation acquires images for the specified number of times while
averaging the images. This operation is effective for reduction of noise.
z
The Peak accumulation acquires images for the specified number of times while adding the
images, and stops image acquisition when any intensity value on the image reaches the
peak (4095). This operation is effective for acquiring an image with the dark lower part in
the XYZ observation and observation of an extremely dark image.
Kalman Accumulation Algorithm
Every time an image is acquired, the pixel values are rewritten based on the following formulae,
where it is assumed that;
n: number of image acquisitions;
l(n): Result of n-times of Kalman accumulations (Intensity values of pixels);
l(new): New intensity value obtained after every image acquisition.
The result of the first Kalman accumulation is identical to the result of ordinary image acquisition:
l(1) = l(new)
The result of the n-th (n > 1) Kalman accumulation is:
l(n) = (l(n-1) * (n+1) + l(new)) / n
