 | MontiVision Development Kit |
 | Product Release Notes |
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| What's new? |
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| Installation |
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| Overview |
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| Components |
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| The MontiVision Workbench |
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| How to use the Workbench |
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| How to insert an Filter |
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| How to make a connction between two filter |
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| How to change filter properties |
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| How to get mediatypes of a pin or connection |
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| How to delete a connection |
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| How to delete a filter |
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| How to find a filter |
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| How to select a filter, pin or connection |
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| How to make a video visible |
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| How to preview a video stream |
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| Workbench Menus and Commands |
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| File menu commands |
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| Edit menu commands |
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| View menu commands |
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| Graph menu commands |
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| Extras menu commands |
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| Help menu commands |
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| Context menu commands |
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| Status Bar |
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| Toolbar |
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| Sorting Filters |
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| MontiVision DirectShow Filter |
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| Common filter functions |
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| MV Absolute Difference |
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| MV Advanced Optical Flow |
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| MV Affine Transformation |
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| MV Alignment |
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| MV Audio Test Source |
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| MV Batch Image File Source |
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| MV Background Subtraction |
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| MV Bayer To Gray |
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| MV Bayer To RGB |
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| MV Bitmap Overlay |
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| MV Blob Counter |
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| MV Blob Finder |
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| MV BlockRecording |
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| MV Buffer Access |
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| MV Camera Calibration |
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| MV Camera Syncronisation |
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| MV Camera Undistortion |
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| MV Color Filter |
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| MV Color Channel Mixer |
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| MV Color Space Converter |
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| MV Color To Gray |
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| MV Color Twist |
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| MV Constant Framerate |
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| MV Convolution |
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| MV Cooccurrence |
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| MV Crop |
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| MV Deinterlace |
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| MV DeInterlace Temporal |
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| MV Delay |
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| MV Demo Source |
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| MV Demultiplexer |
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| MV DPS Renderer |
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| MV DPS Source |
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| MV Dyadic Arithmetic |
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| MV Dyadic Logic |
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| MV Fast Color Filter |
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| MV Frame Access |
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| MV Gauge |
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| MV GDI Overlay |
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| MV Gray To Color |
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| MV Image File Source |
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| MV Image Grabber |
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| MV Image File Renderer |
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| MV Integral |
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| MV Inverse |
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| MV I/O Bool Source |
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| MV I/O Comparator |
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| MV I/O Logic |
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| MV I/O Not |
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| MV I/O Renderer |
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| MV I/O RS232 |
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| MV I/O RS232 Trigger Source |
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| MV I/O Switch Source |
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| MV I/O Textfile Renderer |
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| MV I/O Textfile Source |
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| MV I/O To String |
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| MV IP Camera Source |
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| MV Look Up Table |
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| MV Mean |
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| MV Mean Profile |
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| MV Merge Frames |
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| MV Mirror |
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| MV MJPEG Compressor |
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| MV MJPEG Decompressor |
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| MV Mondic Arithmetic |
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| MV Mondic Logic |
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| MV Morphology |
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| MV Motion Detection |
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| MV Motion Direction |
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| MV Multi File Writer |
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| MV Network Renderer |
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| MV Network Source |
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| MV Nonlinear Filter |
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| MV Object Tracker |
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| MV Optical Flow |
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| MV Playlist Source |
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| MV Polar |
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| MV Presence Detection |
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| MV Profile |
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| MV Recording |
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| MV ReInterlace |
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| MV Resize |
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| MV Resized Rotation |
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| MV Rotate90 |
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| MV Rotation |
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| MV Segmentation |
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| MV Select Mediatype |
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| MV Separate Fields |
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| MV Smooth Sequence |
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| MV Splitter |
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| MV Text Overlay |
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| MV Ticker Overlay |
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| MV Topography |
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| MV Trigger Source |
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| MV Video File Overlay |
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| MV Video Overlay |
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| MV Video Scaler |
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| MV Watchdog |
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| MV Zoom |
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| Filter Event Mechanism |
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| MontiVision DirectShow Filter SDK |
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| Create a new Filter SDK DLL |
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| Implement your custom Algorithm |
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| Register the Filter SDK DLL |
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| Use the new DirectShow Filter |
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| Debugging a DirectShow Filter |
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| Configure a Filter SDK DirectShow Filter |
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| MontiVision Smart ActiveX Control |
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| MV Smart Control Functions |
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| MV Smart Control Interfaces |
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| IMVSmartControl |
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| IMVSCFilterGraph |
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| IMVSCFilterGraph2 |
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| IMVSCVideoWindow |
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| IMVSCVideoWindow2 |
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| IMVSCFullScreen |
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| IMVSCSetFile |
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| IMVSCSetSourceFilter |
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| IMVSCSelectInput |
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| IMVSCSetupVideoStream |
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| IMVSCSetupVideoStream2 |
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| IMVSCClock |
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| IMVSCFilterProperties |
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| IMVSCLog |
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| IMVSCCameraControl |
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| IMVSCFilterEvents |
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| IMVSCMediaSeeking |
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| IMVSCMediaSeeking2 |
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| IMVSCQualityProperties |
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| IMVSCFilterData |
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| IMVSCCommonProperties |
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| IMVSCExtDeviceControl |
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| IMVSCVideoControl |
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| IMVSCAnalogVideoFormat |
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| IMVSCTVTuner |
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| IMVSCTVAudio |
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| Application Development with the MV Smart Control |
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| Visual Basic 6.0 |
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| Visual Basic .NET |
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| Visual C++ 6.0 |
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| Visual C++ .NET |
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| Borland Delphi |
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| MV Smart Control Samples |
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| AviPlay Sample |
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| CropVideo Sample |
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| DirFinder Sample |
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| FindObject Sample |
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| FullScreen Sample |
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| ImageStream Sample |
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| IP Camera Sample |
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| LiveDraw Sample |
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| LoadFromString Sample |
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| LumeneraCameraProperties Sample |
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| MotionDetection Sample |
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| PutBitmap Sample |
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| SendReceiveRS232 Sample |
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| MV Smart Control How To's |
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| How to handle Input Events (Mouse, Keyboard) of the Video Window |
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| How to Select and Configure a Video Input Device |
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| How to handle Multiple Video Outputs |
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| How to use Fullscreen Functionality |
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| How to access the Results of a MontiVsion DirectShow Filter |
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| MontiVision Utility ActiveX Controls |
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| Video Source Combo Box |
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| Video Format Combo Box |
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| Video Size Combo Box |
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| Input Selection Combo Box |
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| Frame Rate Combo Box |
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| Seeking Slider |
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| Filter Property Page Display |
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| Trigger Button |
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| MontiVision I/O Controls |
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| MVIODisplay |
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| MVIOMonitor |
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| MVIOLed |
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| MVIOOutput |
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| VMR Wrapper ActiveX Control |
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| MV VMR Wrapper Interfaces |
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| IMVVMRWrapper |
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| IMVVMRFilterConfig |
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| IMVVMRMixerControl |
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| IMVVMRMixerBitmap |
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| MV VMR Wrapper Sample Applications |
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| VMR Control Sample |
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| VMR Bitmap Overlay Sample |
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| Extended Video Source ActiveX Control |
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| MV Extended Video Source Control Interfaces |
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| IMVExtendedVideoSource Interface |
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| IMVLumeneraCustomConfig Interface |
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| _IMVExtendedVideoSourceEvents Interface |
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| MontiVision Tools |
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| Getting Started |
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| Create a MontiVision Project |
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| Create a MontiVision Project using the MontiVision Workbench |
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| Create new DirectShow Filters using the MontiVision Filter SDK |
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| Use the new DirectShow Filter in your MontiVision Project |
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| Integrate the MontiVision Project into your Application |
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| Distribute your Application |
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| Distributing your Applications |
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| Application Development Examples |
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| Apply standard Image Processing Operators to a Video Stream |
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| Process a Sequence of Still Images, Do Batch Processing |
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| Make your Existing Algorithms DirectShow compatible |
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| Creating your own Image/Video Processing DirectShow Filters |
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| Access the Image Data of a Video Stream directly from within a Windows Application |
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| Capture Still Images from a running Video Stream |
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| Convert a Video Stream to a Sequence of Still Images or vice versa |
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| Sample Applications using the Smart Control |
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| Camera Calibration |
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| Additional HowTo's |
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| How to Set Up Visual C++ for the MontiVision Development Kit |
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| How to Set Up Borland Delphi for the MontiVision Development Kit |
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| How to Set Up Borland Delphi 2005 for the MontiVision Development Kit |
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| Interface Reference |
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| _IMVFilterPropertyControlEvents |
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| _IMVSeekingSliderEvents |
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| _IMVSmartControlEvents |
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| _ISelectInputComboBoxEvents |
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| _IVideoFormatComboBoxEvents |
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| _IVideoSizeComboBoxEvents |
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| _IVideoSourceComboBoxEvents |
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| IMVAbout |
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| IMVAdvancedOpticalFlow |
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| IMVAdvancedOpticalFlow2 |
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| IMVAffineTransformation |
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| IMVAlignment |
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| IMVAudioTestSource |
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| IMVAutoCalcSetup |
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| IMVBackgroundSubtraction |
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| IMVBatchFileSource2 |
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| IMVBatchFileSource3 |
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| IMVBatchFileSource |
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| IMVBinary |
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| IMVBitmapOverlay |
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| IMVBitmapOverlay2 |
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| IMVBlobCounter |
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| IMVBlobCounter2 |
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| IMVBlobCounter3 |
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| IMVBlobCounter4 |
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| IMVBlobFinder |
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| IMVBlobFinder2 |
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| IMVBlobFinder3 |
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| IMVBlobPostProcessing |
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| IMVBlobPreProcessing |
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| IMVBlockRecording |
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| IMVBufferAccess |
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| IMVBufferAccessCallbackC |
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| IMVBufferAccessCallbackVB |
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| IMVCameraCalibration |
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| IMVCameraSync |
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| IMVCameraUndistortion |
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| IMVColor |
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| IMVColorChannelMixer |
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| IMVColorTwist |
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| IMVConstantFramerate |
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| IMVConvolution |
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| IMVCooccurrence |
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| IMVCrop |
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| IMVCrypt |
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| IMVDeinterlace |
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| IMVDeInterlaceTemporal |
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| IMVDelay |
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| IMVDemoSource |
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| IMVDemoSource2 |
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| IMVDPSRenderer |
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| IMVDPSSource |
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| IMVDyArith |
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| IMVDyLogic |
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| IMVEnumAudioEncoder |
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| IMVEnumVideoEncoder |
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| IMVFastColor |
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| IMVFilterData |
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| IMVFilterEvents |
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| IMVFilterInfo |
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| IMVFilterPropertyControl |
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| IMVFilterSDK |
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| IMVFrameAccess |
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| IMVFrameAccessCallbackC |
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| IMVFrameAccessCallbackVB |
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| IMVGauge |
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| IMVGaugeCalculations |
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| IMVGDIOverlay |
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| IMVGray |
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| IMVGrayToColor |
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| IMVGrid |
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| IMVHistogram |
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| IMVHistogram2 |
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| IMVHistogram3 |
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| IMVImageCapture |
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| IMVImageCapture2 |
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| IMVImageCapture3 |
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| IMVImageFileSource |
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| IMVImageFileSource2 |
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| IMVImageFileSource3 |
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| IMVImageInfo |
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| IMVIntegral |
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| IMVIOBoolSource |
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| IMVIOBoolSource2 |
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| IMVIOComparator |
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| IMVIOIntRenderer |
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| IMVIOIntSource |
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| IMVIOIntSource2 |
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| IMVIOLogic |
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| IMVIONot |
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| IMVIORenderer |
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| IMVIORS232 |
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| IMVIORS232DataASCII |
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| IMVIORS232DataHex.htm |
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| IMVIORS232RxTxConnection |
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| IMVIORS232TriggerSource |
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| IMVIOSwitchSource |
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| IMVIOTextfileRenderer |
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| IMVIOTextfileSource |
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| IMVIOToString |
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| IMVIPCameraSource |
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| IMVIPCameraSource2 |
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| IMVLinFilter |
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| IMVLookUpTable |
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| IMVMask |
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| IMVMean |
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| IMVMeanProfile |
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| IMVMerger |
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| IMVMirror |
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| IMVMonArith |
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| IMVMonLogic |
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| IMVMorphology |
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| IMVMotionDetection |
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| IMVMotionDetection2 |
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| IMVMotionDirection |
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| IMVMultiFileWriter |
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| IMVNetworkReceiveInfo |
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| IMVNetworkRenderer |
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| IMVNetworkRenderer2 |
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| IMVNetworkRenderer3 |
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| IMVNetworkSendInfo |
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| IMVNetworkSource |
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| IMVNetworkSource2 |
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| IMVNonLinFilter |
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| IMVObjectTracker |
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| IMVOpticalFlow |
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| IMVOpticalFlow2 |
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| IMVPlaylist |
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| IMVPlaylistSource |
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| IMVPolar |
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| IMVPresenceDetection |
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| IMVProfile |
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| IMVRecording |
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| IMVRegionOfInterest |
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| IMVReinterlace |
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| IMVResize |
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| IMVResizedRotation |
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| IMVRotate90 |
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| IMVRotation |
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| IMVSCAnalogVideoFormat |
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| IMVSCCameraControl |
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| IMVSCCommonProperties |
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| IMVSCClock |
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| IMVSCExtDeviceControl |
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| IMVSCFilterData |
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| IMVSCFilterEvents |
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| IMVSCFilterGraph |
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| IMVSCFilterGraph2 |
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| IMVSCFilterProperties |
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| IMVSCFullScreen |
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| IMVSCLog |
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| IMVSCMediaSeeking |
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| IMVSCMediaSeeking2 |
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| IMVSCQualityProperties |
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| IMVSCSelectInput |
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| IMVSCSetFile |
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| IMVSCSetSourceFilter |
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| IMVSCTVTuner |
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| IMVSCTVAudio |
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| IMVSCVideoControl |
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| IMVSCSetupVideoStream |
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| IMVSCSetupVideoStream2 |
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| IMVSCVideoWindow |
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| IMVSCVideoWindow2 |
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| IMVSeekingSlider |
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| IMVSetImageFormat |
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| IMVSmartControl |
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| IMVSeparateFields |
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| IMVSmoothSequence |
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| IMVTextOverlay |
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| IMVTextOverlay2 |
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| IMVTextOverlay3 |
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| IMVTickerOverlay |
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| IMVTickerOverlay2 |
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| IMVTopography |
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| IMVTrigger |
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| IMVTriggerFilter |
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| IMVVideoFileOverlay |
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| IMVVideoScaler |
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| IMVVMRFilterConfig |
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| IMVVMRMixerBitmap |
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| IMVVMRMixerControl |
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| IMVVMRWrapper |
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| IMVWatchdog |
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| IMVZoom |
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| IMVZoomConfig |
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| ISelectInputComboBox |
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| IVideoFormatComboBox |
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| IVideoSizeComboBox |
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| IVideoSourceComboBox |
MV Text Overlay DirectShow Filter
The MontiVision Text Overlay filter overlays user specific text onto the output video stream.
The new IMVTextOverlay2 interface extends the filter for use with up to ten different text overlays. The new text input pin may be used to set the text to be overlayed. If multiple strings are send to the text input pin, they are separated using the separator configured via COM interface or property page. If e.g. '#' is chosen as separator, the input text could look like: 'This#shows#four#overlays'. Format and positions of the strings have to be configured before receiving text through the I/O text pin.
If you want to create a ticker like overlay, you should use MV Ticker Overlay instead. In case you want to be free to draw onto the live stream using any available Windows GDI command, you can use MV GDI Overlay.
This MontiVision DirectShow Filter is used in combination with the MontiVision Smart Control in the 24Videorecorder and TextOverlay SampleApplications.
| File: | textoverlay.ax |
| CLSID: | CLSID_MVTextOverlay |
Interface
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. |
Supported I/O Pins
| I/O Pin | Corresponding method | Discription |
|
Text In |
IMVTextOverlay::put_Text | Sets the text that is to be drawn onto the video stream. |
Attention:
I/O Pins are dominant, that means that they have a
higher priority than the corresponding method of the filters
interface!
MV Text Overlay Proeprty Page
Uses the IMVTextOverlay configuration interface.
| Enable Overlay | Enables or disables the text overlay. |
| Number of overlays | The number of different text overlays you want to use. |
| Selected overlay | Select the index of an overlay in order to adjust its format and position. |
| Date/Time | The current date and time is overlaid onto the video stream. |
| Text | The user specified text is overlaid onto the video stream. |
| Font properties | Size, typeface and properties of the font that is used to draw the text. |
| Colours | Text, shadow and background colours. |
| Margins | Horizontal and vertical margins for the drawn text. |
| Relative Position | Places the text within the selected corner. |
| Absolute Position | Places the text exactly at the defined position relative to the lower left corner of the video stream. |
| I/O Pin Separator | The separator used to split up the text received on the I/O Text Input Pin into substrings. |
Example Configuration
The following setup shows how to receive text strings from MV I/O Text File Source in order to overlay two different texts at two different positions. '#' was used as separator between the two text strings.
The following text file was used with MV I/O Text File Source:
