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Finding objects on an image
X-ray image of welding seams
The original image contains two
shiny, horizontal objects (welding seams). Let’s try to find only
these objects on the image, and skip all other noise.
Just as
before (Finding
defects on an object) start with a global tresholding (HistDIBThreshold
in BiFilter.Dll) with Threshold value = 137.
After global thresholding
To be able
to use the morphological filters, the image must be transformed into
a binary image (DitherFS4 in BiImage.Dll).
The last
step is a simple binary closing (BinaryClosing in
BiFilter.Dll) with a 3 times 3 full one structuring function.
Result image containing only the objects
of interest
The final image contains only the
objects of interest. |