DirectShow Sample Application: Blob Counting
The BlobCounter sample
appliaction demonstrates the usage of the MV BlobCounter
filter.
This and other sample applications can be found in the
MV Development Kit installation directory.
Filter Graph Summary
The filter graph utilizes the MV Image File Source filter
as source. The MV Blob
Counter filter recognizes blobs within the selected image
and calculates some blob properties. The two video renderers
show the original image and the image with the marked blobs.
The Application
The application contains two MV
Smart Controls used to display the video outputs of
the filter graph. The "Load Image" button opens a file
dialog for the selection of an image. The
application lists the center coordinates of all recognized
blobs in a control window. Click on the "Blob Counter
Properties" button to change the properties of the MV Blob Counter
filter and press the "Update" button in order to update the
blob positions.
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