Definition of PAL

What do the terms PAL and CCIR mean?

ImageSnaped Event fired after acquisition timeout

Why is an ImageSnaped event fired after an acquisition timeout?

Problems with the serial port on a PC2Vision

I have problems with the serial port on the PC2Vision. What can I do?

FAQ (Software)

1:1 Display with CVB

How can I make sure that may images are displayed in their original size (1:1) in the CVB Display?

About Common Vision Blox

What is Common Vision Blox (CVB)?

About Common Vision Concept

What is Common Vision Concept (CVC)?

Angular Measurements With CVB Minos

I want to measure the angle of rotation of an object in my image but I don't know which CVB tool is suitable for this task. Can you give me advice or do you have a demo application?

Application Crash in the CVB Digital I/O Control Tutorials

The CVB DigIO tutorial causes a crash of the tutorial application when starting the Listener with the input of a low signal and then in the first messagebox pressing the Button NO (from the event).

Barcode Bug in CVB 7.1.2

I am reading 1 dimensional Barcodes with the Barcode OCX or Barcode DLL in CVB. As I know the orientation I want to use the FENCE and LADDER parameters to speed up reading. In CVB 7.1.1 this worked well, in 7.1.2 Barcode seems unable to read with the above parameters and I have to use the OMNI or BOTH setting. Why?

Barcode Reading Quality

Is it possible to receive a the quality or confidence with which a 2 dimensional barcode was decoded by CVB Barcode?

Board Level Library Versions

How do I know what version of the board level software for my framegrabber the VIN driver needs?

Borland C++ Builder and CV Image Control

I get compilation errors when inserting the CVImage Control in Borland C++ Builder and building the application. Why?

Borland C++ Builder and the CVB Movie Control

I get compilation errors when inserting the CVB Movie Control (cvAVIRecOCX ActiveX Control) in Borland C++ Builder and building the application. Why?

Calculation of ConvexPerimeterRatio in CVB Blob

How is the parameter ConvexPerimeterRation in the CVB Blob function BlobGetConvex calculated?

Changing Shutter Time of PULNIX TM1405GE Programmatically

I would like to programmatically change the shutter time of my PULNIX TM1405GE. What do I need to do?

Changing Zoomstate When Setting Images in CVB Display

How can I avoid changes in zoomstate when setting a new image handle in a CVB Display?

Common Vision Blox and Windows 95

The installation procedure of the CVB CD cannot be started on my computer. What may be the reasons for that?

Common Vision Blox Licensing and Protection Scheme

How is Common Vision Blox copy protected?

Common Vision Blox, X64CLiPro, e2v Aviiva SC2

I have Common Vision Blox and a Dalsa Coreco X64 CL iPro framegrabber together with a color linescan camera e2v Aviiva SC2. I want to use an external triggersignal to synchronize the line frequency of the camera to the moving object. How do I configure that and are there special settings in Common Vision Blox?

Compilation of CVB Control-Wrappers with CBuilder

The compilation of the wrappers for the CVB Controls with the Borland CBuilder fails. Why?

Converting Display Coordinates to Screen Coordinates and Vice Versa

In my application I would like to determine the image coordinates of several positions by a mouse-click. The mouse-click however does not supply image coordinates but window coordinates instead. How can I convert those coordinate systems?

Copying CVB Images With memcpy

For speed reasons I want to copy my image data from one image to another one using the C-routine memcpy. How can I do this?

Create new images with CreateMatrixTransformedImage

What are the differences between the functions
CreateMatrixTransformedImage( ImgIn, Matrix, ImgOut ); and
CreateMatrixTransformedImageEx( ImgIn, Matrix, ImgOut );
of the Image DLL?

Creating MPEG/MPEG2 with CVB Movie

Is it possible to create MPEG or MPEG2 files with CVB MOVIE instead of avi files?

Custom error handling with the CVCError event.

How can I use customized error handling?

CVB Applications in the Autorun Group

Why do I get the error message "Dongle is not connected" when my CVB application is launched during the startup phase of my operating system (e. g. through an entry in the Autorun group or in the Registry)?

CVB BayerToRGB and Higher Bit-Depths

What bit-depths can be converted by the CVB BayerToRGB Tool?

CVB BayerToRGB- Versus IFC5.5 BayerTo RGB Conversion

Why should I convert the Bayer raw image with the CVB BayerToRGB tool instead of with the IFC5.5 Bayer conversion methods I've already bought?

CVB Crosshair Overlay PlugIn Vertices

I found out that the Crosshair OPI's coordinates for one vertex are always 0 while dragging a Crosshair Overlay Object. Other OPIs do not show this behaviour - why?

CVB Display Coordinates on MouseClick.

How can I obtain the coordinates of a mouse click in a CVB display?

CVB Minos Magic Number not Accepted by Registration Dialog

When I enter my 6 digit Magic Number for CVB Minos as provided by STEMMER IMAGING or my local distributor, the registration dialogue tells me, that it is not correct. What's wrong here?

CVB printQual Classes

What do the names "small", "medium" and "large" for the error classes correspond to?

DALSA Genie Not Listed in CamExpert

What's wrong if a DALSA Genia camera does not appear in Sapera CamExpert, but in the Dalsa Network Configuration Tool?

Demo applications for Common Vision Blox

Where can I find additional demo applications for the Image Manager , the Foundation Package and the Common Vision Blox tools?

Demo Mode Limitations

What limitations are there to an unlicensed tool?

Destroying Listener Objects in the CVB Digital I/O Control

My program hangs when I call the CVB Digital I/O control's methods XXXListenerStop and XXXListenerDestroy (where XXX is either Bit or DWORD consecutively. Why?

Determining the CVB Root-Directory

How can I obtain the CVB root directory and then append a sub-path to it?

Determining which Tools to use

How can one find out, which Common Vision Blox tool is suitable for a certain imaging task?

Different Function Names in CVB Arithmetic

In CVB Arithmetic there are several functions with similar names. Some do not work on my images others do. Why?

Display-Update After Changing Image Size or Dimension

When I switch ports with cameras that differ in resolution or bit-depth, the CVB display isn't updated properly.

Displaying a Histogram in Common Vision Blox

I would like to display the histogram of an image. The command ImageHistogram from the Common Vision Blox Image DLL only hands out an array of data. How can a display of those data be realised?

Displaying more than 8 Bits

I have a monochrome 12 Bit camera. How do I display the 12 Bit image in the CVB display?

Erratic Horizontal Lines in the Common Vision Blox Display OCX

The picture in the Common Vision Blox Display OCX is sometimes interrupted by a horizontal line. This is not depending on certain images nor does the effect occur permanently in the same image but only sporadically. Why?

Error message no memory in Sapera programs

When changing the buffer type in a Sapera program to continuous, I get the error message no memory. With the buffer type scatter gather the program works without any problems. What is the reason for that?

Execution Time of CopyImageArea and DuplicateImage

The function DuplicateImage takes 20 ms to execute on a PIII 450 for one CCIR b/w image. The function CopyImageArea even takes significantly longer. Why?

Flickering of CVB Display setting the Zoom-Mode

I need images to be displayed at 1:1 zoom in CVB. My problem is that when I assign a new image to the Display, the display is flickering for a moment. How could I avoid this flicker?

Framerate of JAI M2 and PCCamLink in CVB

Why does the IFC camera configurator measure a frame rate of 30 fps on a JAI CV M2 (in 10 Bit mode) attached to a PCCamLink while I can only measure significantly less than 30 fps in CVB?

Hints for Porting Applications from CVC to CVB

How much of an effort will it take to port a CVC application to Common Vision Blox?

How to create an RGB image from 3 mono images

I am using CVB Arithmetic with RGB images. Arithmetic works only on separate planes of the RGB image and therefore I receive as a result 3 monochrome images. So I have to compose these images to a RGB image. The CVB-function CopyImageArea does the job, but it is very slow (e.g. about 40 ms for a CCIR image). Is there another, faster possibility to do this?

How to Quickly Rotate an Image in CVB

What is the fastest way to rotate a (live) image in CVB?

How to Set the Image Origin in CVB

When I use the function CreateSubImage to cut out a part of an image and display the result it in a separate Display, the coordinate system that is used is obviously still from the original image. How can I set the image origin (0,0) into the upper left corner?

How to Use the Blob Function BlobGetConvexPoints in Visual Basic

I want to know if and how I could use the Blob-function BlobGetConvexPoints in Visual Basic.

IFC Camera Configurator Unable to Find a Grabber

I installed my IFC 5.x.x Board Level Library, but the IFC Camera Configurator is unable to detect any Coreco Grabber in my system although the windows device manager indicates a proper installation of my board. What can I do?

IFC Reports a Version Conflict

On my system, IFC and ITEX are installed simultaneously. Now the IFC reports a version conflict. Who can I get rid of this?

Image Acquisition in CVB with CVA Leo/Aries or IDS Falcon

After a short temporary loss of the video signal, the image acquisition with an CVA Leo/Aroes or IDS/Falcon grabber in CVB fails. The framerate however climbs to 50 frames per second. Why?

Image Creation and Reference Counting in Common Vision Blox

In my application I create new images at runtime using the DLL function CreateXXXImage. The application is running stable for some time, but then crashes with an OutOfMemory message. Where is the memory leak?

Image Scaling in CVB

Is it possible scale an image in CVB, e.g. to double the image size?

ImageSnaped Event fired after acquisition timeout

Why is an ImageSnaped event fired after an acquisition timeout?

Initialization of the Display OCX in Delphi

If I load an image into the Image OCX and assign it to the Display OCX in the OnCreate routine in Delphi, the image is not shown when the program starts. Instead, in the place of the Display OCX the background of the windows desktop can be seen.

Installation of Sapera or IFC under Windows NT

Are there any problems concerning the installation of Sapera or IFC under Windows NT?

ITEX-based Drivers and Error Console

When opening the CVICPCI.vin driver, the ITEX Error Console opens even though it has been disabled in the ini-file. Why?

JAI CV-M7+(CL) Bayer Mosaic Changed

I have a BayerToRGB conversion for the images produced by the JAI CV-M7+ (CL) which is running fine. Now I bought a new camera and the conversion does not work properly any longer. Why?

Learning Classifiers With Minos DLL

Instead of using the TEACH program for training I have implemented my own teaching functionality to my MINOS application. For this I use MINOS-DLL functions LearnCLFFromMTS.
However, the CLF created with my own teaching functions shows other reading results than the CLF learned with the TEACH program even if learned from the same MTS. Why?

LinLog and External Exposure control

I use for my Photonfocus camera the PFRemote Control Tool . Why does LinLog not work when using a trigger mode with external Exposure control

Live Video Error Message While Starting ConfigPXD.exe

After installing the ImageNation PXD Win32 driver V1.07B for the digital frame grabber PXD-1000, the configpxd.exe application starts up with the message box: "This application will run without the ability to grab live video. Probable cause: PXD frame grabber not installed". What is missing here?

Loading Image Files other than *.bmp

After loading a TIF image the method IsGrabber returns true. Why?

Locating Several Objects With CVB ShapeFinder

How can I locate several objects simultaneously with CVB ShapeFinder?

Magic Numbers

How are the purchased Common Vision Blox tools unlocked?

Memory leak in SaveWindowToBitmap() of CVdisplay.ocx

I use CVB 8.0.3. With every call of the SaveWindowToBitmap() function of the CVdisplay.ocx the Commit Charge increases. What can I do?

Merging Two Minos Trainingsets Into a Single One

I have made two trainingsets with Minos TeachNT. Now I want to merge the images from both training sets. I did not find any menu entry inside Minos TeachNT. How can I do this?

MicroEnableIII and CVB Image Control

After setting the FileName property of the Image OCX to the CVME3.vin driver (or after selecting this driver as startup image file in the Image Control's property page), my program is unable to open the MicroEnableIII (meIII) driver. Why?

MicroEnableIII and the License File

How do I upload a License file/code to the SiSo MicroEnableIII grabber?

MicroEnableIII and Windows Shut Down Behaviour

Ever since I have installed a MicroEnableIII (meIII) grabber in my PC, the system reboots every time I try to shut down the computer. Why?

Minimum Framegrabber Timeout in Common Vision Blox

What is the minimum timeout for a Framegrabber I can set in Common Vision Blox?

Minos Classifier Creation in Visual Basic

In Visual Basic most of the functions for creating and handling a training set (MTS) are available. However, the function LearnCLFFromMTS is not supported under Visual Basic. So, is there no way to create a Classifier at runtime in Visual Basic?

Minos Search OCX Result Errors

In my application, the Minos SearchX control does not find all objects present in the image and the first object is found twice?

Missing Features in the CVB Printqual Control

I am using the CVB PrintQual Tool. However there are some differences between the explanations in the documentation and the control. For example, the parameter NoTpls for the NumTpls-property does not work. What is wrong?

Mixing components from CVC and CVB

Is it possible to use CVB tools in CVC based applications or vice versa?

Mixing Use of the Display DLL and the Display OCX

The Common Vision Blox Display OCX als well as the Common Vision Blox Display DLL provide functions for displaying textual labels on a display. With the OCX methods it is no problem to position a label on a Display OCX, but calling the corresponding functions of the Display DLL on the Display OCX yields nothing. The same effect can be seen with other functions (e. g. Overlay management functions). What is the reason for this behaviour?

More than 8 bit images with CVB

Can I handle image with more than 8 bit with CVB?

Overlay Plug-In Objects in Visual Basic

I receive a "Run-time Error '13' with Type mismatch" in Visual Basic when I call the AddOverlayObject Method". Why?

PC gets stuck with PX-610A while booting up

After installing the PX-610A drivers from CVB or Imagenation my PC gets stuck or shows a blue screen while booting up. What's the reason ?

PC Unable to Discover a Genie Camera

A connected Genie camera cannot be discovered by the CamExpert or the Dalsa Network Configuration Tool.

PFRemote Configuration Dialog not Visible

Why can't I see the Configuration Dialog of PFRemote when I try to open and configure a port?

PHARMACODE and CVB Barcode

Is the PHARMACODE supported by the CVB Barcode Tool?

Photonfocus ControlTool PFRemote

With what can I control my Photonfocus MV-... or Dalsa 1M... and where can I download the Control-Software ?

Photonfocus MV-Dxxx and PFRemote

I want to configure a Photonfocus Camera from the MV-Dxxx series with PFRemote. When opening PFRemote I get the following Error message: Could not open Device Camwrapper: could not load DLL

Porting Applications from CVC to CVB

Is it necessary, to port Common Vision Concept based applications to the new Common Vision Blox architecture? What reasons are there for porting an application to CVB?

Printed Common Vision Blox documentation

Is it posible to purchase the printed Common Vision Blox documentation?

Printing images from CVB

How can I print an image in CVB?

Problem With ContourFinderX Control in Visual C++

I am using the ContourFinderX control in a Visual C++ application, and I want to filter out the found contours using the OnOnQueryAcceptContour Event as described in the documentation. However, if I assign TRUE or FALSE to the *Accept parameter, I get an unhandled exception when running the application. I have not changed the statements create by the Visual C++ class wizard. What is wrong?

Problems Reading a PDF417 Barcode

When I try to read a PDF417 barcode with one of the tutorial applications of CVB Barcode I always get the result "no code read". However my images and the barcode look good enough to be read. Is there anything I can do?

Problems when coding with the AVT driver from CVB 9.0.2

When trying to compile one of the samples that is installed with the AVT driver setup from Common Vision Blox 9.0.2 or trying to compile an application that uses teh CVAVT1394.vin driver together with the CVCPort -dll and the CVCDriver-dll I keep getting error messages from my compiler.

Problems with some CVB Controls in Borland C++ Builder

I get compilation errors when inserting e. g. the PrintQual Control in Borland C++ Builder. Why?

Problems with the VPAT and newer CVB Drivers

When I call the GetImageVPA function once at the beginning of my program and then use the acquired VPAT during the rest of the program, my software crashes with an access violation. Why?

Pseudocoloring of a Monochrome Image in CVB

We have a thermography camera with monochrome video output. We want to display a pesudo color image. How can I assign a color palette to a monochrome image in CVB?

Reading Problems with CVB Barcode

The CVB Barcode tool did not read a simple 1D-Barcode (e. g. Code 39) in my application. What could be the problem?

RemoveAllOverlayObjects is too slow

I have some troubles using the Display method RemoveAllOverlayObjects. When I am erasing a large number of overlays it takes up to several seconds to remove them! . How can I speed the removal of overlays up?

Requirements for VIN-Drivers to work correctly

What do I have to install that CVB works with an image aquistion device like a Framegrabber or a Camera?

Return Value of BlobGetCenter Function

The CVB Blob Tool function BlobGetCenter does not return a real value.
Does this mean that the Blob-Tool does not support subpixeling?

Saving of Image Sequences with CVB

Is it possible to save sequences of images from CVB into an AVI or MPEG file?

Saving of Images With More Than 8 Bits per Pixel

Is it possible to save images with more than 8 Bits per pixel into an image file in CVB?

Settings of the Common Vision Display OCX

If I attune settings of the Display OCX (e. g. the selection of the color planes) in my development environment at design time, those settings are disregarded at runtime. How can I make preselections anyway?

Smallest ROI of the PhotonFocus Trackcam

What is the smallest possible size of ROI of the PhotonFocus Trackcam?

Stripes on the CVB Display

When I have connected an interlaced camera to my Frame Grabber, I can see several large horizontal stripes in the Display of my CVB application, especially when I move the camera around while doing a live display. What's wrong?

Taking Single Shot Images from a Camera

I simply want to take an image from my CCD camera using Common Vision Blox and then process this image, but I cannot find any function suitable for taking a single image.

The CVB Dongle is not Recognized by CVB

Although my CVB dongle is attached to the parallel port, all CVB applications are only running in demo mode and the Common Vision Blox System Information resp. the Management Console (CVB 10) program also indicates 'Not licensed - using demo mode' instead of my serial number. What's up?

The Line OPI

I have a Line OPI, which I move on the display. How do I get the position of this line (in terms of start and end point coordinates of the Line)?

Turning off a Grab in the Blockready Event

Using the Linescan OCX of the Common Vision Blox Image Manager, I want to stop data acquisition by setting the continue parameter to FALSE in the OnAcqBlockReady event if the LastBlock parameter was TRUE.
If I do so, however, at least the first block of my image is overwritten. How do I prevent this from happening?

Using Allied Vision Technologies IEEE 1394 cameras with Common Vision Blox

How do I use an AVT FireWire camera under Common Vision Bloxx?

VC7/VC.Net Compiler Warning in CVB

When compiling my CVB project with VC7/VC.Net, the following warning is shown by the compiler:

warning C4312: type cast: conversion from long to IMG of
greater size

warning C4244: initializing: conversion from
INT_PTR to int, possible loss of data

When loading the Xcelera CVB Driver the debug window allways opens.

When loading the CVXceleraCLPX4.vin driver from any CVB application, the debug console windows allways opens and shows debug information. Even when the debug error log parameter in the .ini file is turned off. In addition the message: "INI-File not found -> Default values will be used." is shown in the error log.

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