MV Blob Counter DirectShow Filter
The MV Blob Counter filter counts all
blobs (objects or contours) within an image. The filter
contains two filters for blobs. One filter excludes
all blobs outside a minimum and maximum size. The second filter
excludes all blobs whose seven "hu invariants" are outside a
minimum and maximum value. Hu invariants are proved to be
invariants to the image scale, rotation, and reflection except the
seventh one, whose sign is changed by reflection. Use the
invariants to detect objects within a video stream.
New interfaces (IMVBlobCounter2 and
IMVBlobCounter3)
extend the filter to provide detailed information about the
recognized blobs, including size, position, angle, bounding
rectangle and average blob color.
This MontiVision DirectShow Filter is used in combination with
the MontiVision
Smart Control in the BlobCounter and
FindObject
Sample Applications.
| File: |
blobcounter.ax |
| CLSID: |
CLSID_MVBlobCounter |
|