MV Camera Calibration DirectShow Filter

The MV Camera Calibration filter is used to create a MontiVision Camera parameter file (*.mvc). The MV Camera Undistortion filter uses this file to create a calibrated video stream.

File:	CameraCalibration.ax
CLSID:	CLSID_MVCameraCalibration

See also:

MV CamCalib Application

MV Camera Undistortion Filter

HowTo: Camera Calibration

Undist Sample Application

Supported Interfaces

Supported COM Events

The filter supports following events through the IMVFilterEvents interface. Look at the filter events page for more information.

Event	Value	Description
MV_ALGORITHM_START_EVENT	0	A filter starts processing a video frame or sample.
MV_ALGORITHM_END_EVENT	1	A filter finishes processing a video frame or sample.
MV_CALIBRATION_VALID_IMAGE_EVENT	6	The filter captured a valid calibration image.
MV_CALIBRATION_FINISHED_EVENT	7	The filter finished the camera calibration.

MV Camera Calibration Property Pages

MontiVision Camera Calibration DirectShow Filter Property Page

Camera - Label	A friendly name for the camera.
Camera - Type	The camera type.
Camera - Chip Width	The width of the camera chip in mm.
Camera - Chip Height	The height of the camera chip in mm.
Objective - Label	A name for the objective.
Objective - Focal Length	The focal length from the objective.
Intrinsics	The camera parameter (intrinsics)
Copy Input Image	Copy the input imges to the output video stream.
Undistortion	Enable the undistortion function from the filter.
Reset	Set the camera parameter (intrinsics) to default values.
Load	Load a camera parameter file (*.mvc).
Save	SSave the camera parameter into a file (*.mvc)

MontiVision Camera Calibration DirectShow Filter Chess Board Pattern Property Page

Enable Auto Calibration	Enable the auto calibration function from the filter.
Calibration Pattern	Select the used calibration pattern.
Pattern Dimension	Size of the calibration pattern.
Image Count	Count of used calibration images form calculation camera parameter.
Image Delay	Minimum delay between two calibration images.
Start	Start the automatic calibration function.
Stop	Stop the automatic calibration function.
Get Image	Save a calibration image in the single shot mode.
Single Shot	Enables the single shot function. To get an calibration image press the Get Image button.
Adv. Segmentation	Enables an advanced segmentation algorithm to get better resulst in some cases.
Valid Refernece Images	Count of current valid calibration images saved for calculating camera parameter.
Camera Parameter	Current used camera parameter.
Save Calibration Images	Save the calibration images into the selected folder.

MontiVision Camera Calibration DirectShow Filter Adjustment Property Page

Distortion	Values for th four distortion parameter.
Focal Length	The x/y value for the focal length in pixel size.
x=y	Set both focal length to the same value.
Principal Point	x/y coordinate for the principal point.
Undistortion	Enable the undistortion function from the filter
Reset	Reset the camera parameter to default values.

Show grid	Enable the grid overlay.
Grid Size	Size of the grid in pixel.
Grid Offset	Offset of the first grid lines. The grid starts on the button left corner of the image.
Grid Colour	Select the grid colour with a colou dialog.