Acquisition Problems With IC-Async Frame Grabber

I am using an IC-Async Frame Grabber for image acquisition. But regardless of resolution, trigger mode etc. the image always contains strictly horizontal black stripes. Is the grabber damaged?

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).

JAI A-Series Cameras Have a Different Pinout

Is there any difference in the pinout between the A-Series and the M-Series from JAI?

FAQ: Display OCX

Compilation of CVB Control-Wrappers with CBuilder

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

Custom error handling with the CVCError event.

How can I use customized error handling?

CVB Display Coordinates on MouseClick.

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

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 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?

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.

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?

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?

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?

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?

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)?

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