Panasonic MICRO-IMAGECHECKER AX40 User Manual page 59

AX40 Inspection Images
Processing a Camera Image:
The AX40 provides two image areas for inspection called Memory 1 and Memory 2. You can set a
processing way of the images that were captured with Camera 1 and Camera 2 from the following three
types.
Extraction Process*:
The process of extracting the specific colors. You can register up to eight colors from group A to H per
product type or memory, and create a checker for the extracted parts and the not extracted parts. If you
want to perform inspection based on the color information, an extraction image can be used.
*The Extraction Process is indicated as "Color" on the screen.
Gray Process:
The process of importing the signals from a camera as a 256 (0 - 255) grayscale image. The brightness
of 256 gray scale is called a gray value. The higher gray values the brighter pixels, the lower gray values
the darker pixels. If you want to perform an inspection without using any color information, a gray image
can be used.
Differential Process:
The function of calculating the variation of brightness by using the object pixels and the gray scale of the
pixels around the object pixels according to the gray scale information. The calculated variation of
brightness is called differential value. The larger gray value the larger differential value. The smaller gray
scale the smaller differential value. A differential image is created based on the differential values (0-255)
calculated through a differential process. The available pixel range of a differential image is 509
(horizontal) x 477 (vertical), because one outermost pixel line of the image (two lines for the upper edge
and the left edge) is not calculated.
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