cannot see threshold image on front panel

[Arjun247]

I wrote simple code to threshold an image after extracting the color plane.

I donot see anything on the Image window after I run the code. Its blank.

I donot know what is the issue. I posted my code here. I donot know what

I am doing wrong. let me know.

[muks]

I have not seen your vi as i have only 8.0. you wouldve most likely not set the buffers correctly. You wouldve converted the image to a binary image and trying to view a greyscale image. You can right click the image and go to pallaetes and view it as a greyscale image. It is better to connect a imaq create to img dst of the extract plane. The problem should go off.

[pflores]

Arjun,

I was able to fix the issue by enabling the Snapshot option of the image indicator:

This is how the NI Vision for LabVIEW Help describes the Snapshot option:

Display an Image Dim hasPlayer, playerversion hasPlayer = false playerversion = 10 Do While playerversion > 0 On Error Resume Next hasPlayer = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & playerversion))) If hasPlayer = true Then Exit Do playerversion = playerversion - 1 Loop is_FlashVersion = playerversion is_Flash = hasPlayer

• Snapshot Mode—Determines if the control makes a copy of the image or has a reference to the image. When you enable the Snapshot Mode, if the inspection image changes later in your application, the Image Display control continues to display the image as it was when the image was wired into the Image Display control.
  
  Enabling the Snapshot Mode may reduce the speed of your application because the control makes a copy of the image. Enable this property when you want to display a snapshot of the image in time. Disable this property when you need to display results quickly, such as during a grab acquisition. The Snapshot Mode property is disabled by default.

Note  To cause the Image Display control to refresh the image immediately, use the Refresh Image method. To create a method, right-click the control, and select Create»Invoke Node. Click the Invoke Node once to see the available methods. Methods specific to the Image Display control appear at the end of the shortcut menu.