Levenhuk C800 NG Digital Camera, USB 2.0 - Manual (Page 88)

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Erode Check this morphological filter if one wants to modify the size of objects
in the image. The Erode filter erodes the edges of bright objects and
enlarges the edges of dark ones.
Dilate Check this morphological filter if one wants to modify the size of objects
in the image. The Dilation filter dilates bright objects and erodes dark
ones.
Open Check this morphological filter if one wants to modify the shape of objects
in the image. Assuming the image contains bright objects on a dark field,
the Open filter will smooth object contours, separate narrowly connected
objects, and remove small dark holes.
Close Check this morphological filter if one wants to modify the shape of the
objects in the image. Assuming the image contains bright objects on a
dark field; the
Close filter will fill gaps and enlarge protrusions to connect
objects that are close together.
Tophat Check this filter to detect and emphasize points, or grains, that are
brighter than the background. There are 3 kernel sizes for this
processing. Click the radio button to change the kernel size to the value
that most closely matches the size of the grains to detect.
Well Check this filter to detect and emphasize points, or grains, that are
darker than the background. There are 3 kernel sizes for this processing.
Click the radio button to change the kernel size to the value that most
closely matches the size of the grains to detect.
Gradient Check this filter to enhance edges in an image.
Watershed Check this filter to separate objects that are touching. The Watershed
filter erodes objects until they disappear, then dilates them again, but will
not allow them to touch. The Watershed filter will not operate upon True
Color images. If one wants to separate objects in a True Color image, he
must first convert it to
Gray Scale (see Process Frame: Image>Gray
Scale ).
Thinning Check this filter to reduce an image to its skeleton. When choosing this
filter, one must set the threshold that determines whether a pixel is part
of the subject, or part of the background (see Options below). The