Video Display (BitFlow)  
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Toolbar:   videodisplay  
Menu:   Acquire > Video Display  

Use this command to select the video display settings for a BitFlow interface board (Raven, Road Runner, R3, R64). If you choose this command, the Video Settings dialog box will appear. Click the Video Display tab, and you will see the following options:

Flip
 
Lets you select one of the video flipping modes. Flipping affects the live video display as well as actual order of pixels in the frame buffer. Select among the following modes:  
 
Off - no video flipping is performed.     
Horizontal - the video is flipped horizontally.      
Vertical - the video is flipped vertically.      
Diagonal - the video is flipped horizontally and vertically.     

Rotate
 
Lets you rotate the image. Rotation affects the live video display as well as actual order of pixels in the frame buffer. Select one of the following modes:  
 
Off - no video rotation is performed.      
90°- the video is rotated counterclockwise.      
180° - the video is rotated 180 degrees.      
270° - the video is rotated clockwise.     
 
Exposure
 
Displays the current exposure time for the camera, in milliseconds. Type a different value in order to change the exposure time. If you do not want the exposure time to be affected by the camera line rate, select the check box on the left. This is especially useful in combination with the Encoder mode, which usually causes fluctuations in the line rate. Note that this option works only with certain line-scan camera configuration files. See BitFlow SDK Reference Manual for more details.  
 
Brightness
 
Move the slider to adjust the brightness (average intensity level) of the video by modifying the hardware look-up table. If the currently selected board does not have a LUT, this option will be unavailable.  

Contrast
 
Move the slider to adjust the contrast ((the difference in intensity between the dark and light areas) of the video by modifying the hardware look-up table. If the currently selected board does not have a LUT, this option will be unavailable.  

Gamma
 
Move the slider to adjust the gamma level of the video by modifying the hardware look-up table. The gamma correction modifies an image by applying standard, nonlinear gamma curves to the intensity scale. A gamma value of 1 is equivalent to the identity curve that does not affect the image. To lighten an image and increase the contrast in its darker areas, increase the gamma by moving the slider to the right or indicating a value greater than 1. To darken the image and emphasize the contrast in the lighter areas, decrease in the gamma by moving the slider to the left or indicating a value less than 1. If the currently selected board does not have a LUT, this option will be unavailable.  
 
Bayer
 
Enable this option to activate the Bayer conversion. Bayer images are generated by one-chip CCD cameras which have a color filter mosaic array (CFA) installed in front of the sensor. Enabling this option will transform such a monochrome video into RGB video by performing the Bayer color reconstruction (demosaicing). If the currently selected camera file generates an RGB video, this option will be unavailable.  

Bayer layout
 
Lets you define the layout of the Bayer filter by selecting two first elements of the first row of the incoming Bayer video. he most frequently used Bayer pattern has the following layout:  

G
B
G
B
B
R
G
R
G
R
G
B
G
B
G
R
G
R
G
R
 
 
Select one of the following layouts to achieve a proper color rendering: GB, GR, BG, RG.  
 
Progress
 
Select this check box to have ImageWarp display a progress indicator on the status bar while capturing the live video. During a frame capture, the progress bar will be gradually filled from left to right, indicating a number of horizontal lines captured toward completing the frame. Displaying a capture progress is especially useful when you work with a line-scan camera synchronized with a motion encoder.  
 
Displaying the capture progress for area-scan cameras with regular frame rates is not recommended, as the progress indicator will be updated at an excessive speed and will consume extra CPU resources.  

Defaults
 
Click this button to return the options to the camera file defaults.  
 
Note – the Brightness, Contrast, and Gamma options are currently supported for 8- and 24-bit pixel formats only.