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Quick Setup procedure for Chroma-Key system

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Quick Setup procedure for Chroma-Key system Powered By Docstoc
					                           DVK-100
                  Installation and adjustment


DVK-100 & CKL-100 Chroma-Keyer
   Solution for Virtual Studio
                                                  DVK-100
                                        Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 1: Camera adjustment
  1.   Connect Camera S-video output to DVK-100 for better
       performance (may use Datavideo CB-1 S-video to Two BNC
       cable adaptor for longer distance by BNC coaxial cables)
  2.   Set a correct Camera light temperature.
       Cool light: 5800K, Warm light: 3200K
  3.   Adjust white balance of the Camera from the object distance
  4.   Turn off Camera Auto-Gain control, manually adjust a best
       Camera IRIS and Focus on object
  5.   Fix the CKL-100 LED ring on to Camera Lens and turn on
       light control box, select Green or Blue color ring light
  6.   See from Monitor to adjust LED ring light to mean and even
       on to retro-reflect background and minimum the light reflect
       on object
                                                  DVK-100
                                         Installation and adjustment

3-Step to adjust Chroma-key for live operation

Step 2: Lighting arrangement

2-1. Setup for Green/Blue background
     wall or screen:
   1. Place two set lights for foreground
        (L/R) and one object spot light in
        the middle for object.
   2. Two set lights for background to
        remove the shadows
                                                  DVK-100
                                         Installation and adjustment

3-Step to adjust Chroma-key for live operation

Step 2: Lighting arrangement

2-2. Setup for Retro-reflective screen
     (Datavideo CKL-100)
   1. Place two set lights for foreground
        (L/R) and one object white spot
        light in the middle for better
        object color
   2. Background light is not required
   3. Note to minimum the lighting
        influence to LED color ring light,
        less light will get better Chroma-
        key effect
                                                      DVK-100
                                           Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  1.   Power on DVK-100 and Select CAM-1 or CAM-2 input
       (Press and hold CAM-1 or CAM-2 button for 2 seconds to lock the
       system configuration, press and hold 2 seconds again to unlock)
                                                     DVK-100
                                         Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  2.   Press on “RESET” key to initialize the unit
                                              DVK-100
                                     Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  3-1. Select key color (Green Background is recommended
       when using a color background wall or screen)
  3-2. Select the Level key and adjust level at -3dB
                                                DVK-100
                                      Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  3-1. Select Chroma-key (LED on)
  3-2. Turn the knob till the background become transparent
       grey (will see a preliminary overlay video result)


                 Green color



                 Foreground
                 object




                 Green removed
                 Background
                 Video overlay


                  Foreground
                  remains
                                                  DVK-100
                                        Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  3-1. Select level key again
  3-2. Turn the Knob to adjust Key level for a better overlay
       result, check the shadow and lighting arrangement.
                                                                                          DVK-100
                                                                                 Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
         4.         Shrink object edge (L/R): Press and hold on the L/R arrow
                    key for 3 seconds till the LED blinking and turn the knob to
                    eliminate Jiggered outlines on the object L/R edge




Jiggered outlines
                     Jiggered outlines   Jiggered outlines   Jiggered outlines
left
                     right               left Removed        right Removed
                                                  DVK-100
                                        Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  5-1. Adjust the Spill suppression: Press on Spill key (LED on)
       and turn the knob level to eliminate the reflect green/blue
       light on object
                                                   DVK-100
                                         Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  5-2. Adjust the object density: Keep Spill key LED on, press
       and hold on level key for 2 seconds till LED blinking, turn
       the knob for object density adjustment
                                                         DVK-100
                                             Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  6.   Adjust Foreground (FG) and Background (BG) color
       correction for better picture quality
       (May use still picture function for easier adjustment)
                                               DVK-100
                                      Installation and adjustment

3-Step to adjust Chroma-key for live operation
Step 3: DVK-100 adjustment
  7.   Adjust the matte windows (UP-Down-Left-Right): Select
       the arrow key and turn the knob to define the matte
       window size for key effect
                                           DVK-100
                                Installation and adjustment

Applications of Luma Key effect
Luma-Key effects (Black/white color key)
                                                    DVK-100
                                        Installation and adjustment

Applications of Luma Key effect
Black color Key effects:    (Default setting as Luma-key is on)
   Foreground image with black color (below left)
   to overlay with background video (below right)
                                                      DVK-100
                                            Installation and adjustment

Applications of Luma Key effects
White color Key effects:
   Foreground Text video with white color background (below left)
   to overlay with background video (below right)
   (Press and hold on Luma-Key 2 seconds to enable white color key)




             FG (with white color)
                                                                   DVK-100
                                                     Installation and adjustment
There is an interference from CKL LED light to Camera white balance

     Green and Blue LED Ring light will interfere the Camera white balance

•     Green light has less color interference to camera white Balance.
    –    Green light has less color phase difference from yellow light (less 60 degree),
         so no matter how strong of the green light even up to saturation, it won’t be
         too far different from yellow and this difference can be fine tuned by the spill
         suppression function to find a satisfied skin color on object.

•     Blue Light has more serious color interference to Camera white Balance
    –    Blue light has 180 degree color phase difference from yellow light, a strong
         blue light will direct against to the yellow color and make it becomes less
         saturation, blue light also interferes to camera white balance, thus cause the
         skin color from camera be serious distorted. In this case, to adjust Blue spill
         suppression will only eliminate the reflective blue on object but can not resolve
         the color distortion from camera. Adjust the FG color correction from DVK-100
         will help to improve this color distortion from camera.
                                                      DVK-100
                                           Installation and adjustment


Supplement to Blue-Key Adjustment Procedure For
CKL-100 & DVK-100

–   Adjust LED Light Ring Level: Select the Blue LED light and turn
    the level control button to find a lowest and even blue reflect from
    Retro-Reflective screen. (please see this result from a monitor)
–   Adjust Light: Add a white spot light on object to make the skin
    color brighter in order to lower the blue light affect from LED ring.
–   Adjust Camera White Balance: Try different color temperatures
    with white balance to find a combination for better skin color
–   Adjust FG color processor: Use the DVK-100 FG color processor
    to adjust the skin color
–   Adjust DVK-100 blue offset for non-color object becomes white
    or grey color
–   Adjust the blue spill suppression to eliminate the reflect blue
    light from object

				
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posted:11/30/2011
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