Edirol V-4 owner manual Using Luminance Key to composite images

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Compositing two images

6.Turn the control dial.

Parameter of Chroma Key (level of extraction) gradually changes. If Chroma Key button is not blinking, you cannot change the parameter with the control dial.

7.Move the video fader

Moving the video fader will control the appearance and disappearance of the background image.

8.Turn the effect off

Press the button again to turn the effect off.

Some effects cannot be used simultaneously.

You cannot composite images if you image has no consistent color that can be extracted with Chroma Key. It is also difficult to extract correctly if the blue/green contrast of color is not sufficient and consistent.

The default Chroma Key status of V-4 is set to extract the blue part of the image. It is possible to change this setting to extract a different color. It is also possible to adjust setting of the extraction level and blur level of edges. For details, refer to p. 75 or later.

Using Luminance Key to composite images

You can composite two images by extracting the light or dark part from one the image and replacing it with the other image. Such a composition effect is called Luminance Key. Here’s how you can composite image from channel B and overlay it on the channel A image.

1.Set the memory dial (MEMORY) to 1.

Turn the dial all the way to the left to select the 1 position.

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Contents Page Avis Page Page Power Supply PlacementMaintenance Additional PrecautionsAbout specifications About turning the power onOther important notes Contents Midi implementation Index Welcome Features What is V-LINK? LinkBefore you begin Check the included itemsNames of things and what they do Rear PanelFront Panel Before you begin About Ground Terminal Unsuitable places for connectionConnecting peripheral devices Typical connection exampleVideo signal flow Turning the power on Turning the power on/offTurning the power off Checking the final output Checking the inputs and outputsChecking the output to the preview monitor About the display on preview monitor Conceptual diagram of the Memory dial About the Memory dial MemorySwitching two images Switching by CutSwitching with dissolve Switching with WipeUsing fade-to-white or fade-to-black Using Picture In Picture to composite images Compositing two imagesUsing Chroma Key to composite images Using Luminance Key to composite images Compositing two images Compositing two images Changing the color of the image Applying the Negative effectApplying the Colorize effect Changing the color of the image Changing the motion of the image Applying strobe motionApplying the Multi or Mirror effects Applying the Multi effectApplying the Mirror effect Using BPM sync to switch images Switching in synchronization with musicUsing the tap TAP function to switch images Switching in synchronization with music Using the tap TAP function to apply an effect Using BPM sync to apply an effectApplying an effect on the music Editing the front panel assignments Enter Button EnterEditing the front panel assignments Changing the assignment of the mix button MIX Changing the assignment of the wipe button Wipe Changing the assignment of the EFX button EFX Editing the front panel assignments Changing the assignment of the output fade dial Output FadeEditing the front panel assignments Editing the front panel assignments Editing the front panel assignments Changing the assignment of the BPM sync button BPM Sync Editing the front panel assignments Editing the front panel assignments Protecting the memory Copying or exchanging memories Recalling the factory settings Editing the front panel assignments Using V-LINK to control Control the V-4 from an external deviceUsing Midi to control Using V-LINKDV-7PR Midi settings Setting the Midi receive channel Midi Rx Channel Making other Midi settings Midi Setup Making various settings Making various settings Calibrating the video fader Calibrating the video fader Using the V-4 in Presentation mode What is Presentation mode?Switching to Presentation mode Presentations using two screens with Picture In PictureUsing the V-4 in Presentation mode Switching between Ntsc and PAL Changing the video fader orientation Changing the video fader orientation Troubleshooting Operating the video fader does not switch the imageMenu List Menu List255 Effects-A Mem2-8 Efx1 Efx2 Efx3 Efx4 Effects-B Output Fade Mem2-8 BPM Sync Mem 2-8 Mode Midi Setup Midi Tx Channel Utility Mode Preview Auto Speed Main specifications Video inputMain specifications Dimensions Examples of using Using the V-4 at an eventUsing the V-4 at a concert or VJ performance DV-7PRUsing the V-4 at a presentation DVDVideo output Preview Midi control Projector Midi implementation Midi messages received at MidiMidi implementation Midi messages transmitted from Midi OUT Midi implementation Midi Implementation Parameter Address Map Clip Control Preference Appendices Factory Setting of V-LINK Midi Implementation Chart Index PALInformation 03019190 ’03-01-C2-11KS