The first step in spill removal is to adjust Spill Ratio until most of the background color is gone from the foreground. If necessary, you can use the Crop Top-Left and Crop Matte Bot-Right parameters to create a region outside which all pixels become transparent, which can help remove unwanted objects in the foreground. It is best to adjust the controls in the order described. If a spill is present you can substantially reduce it by modifying Spill Ratio, Tone Mix, and Tone Range. Adjusting the weights of the color channels slightly changes the key Color and can help improve the matte.Īfter you are satisfied with the matte, check the for color spill–that is, the presence of the background color in the foreground. Red, Green, and Blue adjust the weight of the corresponding color channel in creating the matte. Temporarily hide the filter and pull the correct matte color from the unfiltered image. If the default key Color pulls a matte which removes a lot of the source image, it can be difficult to use the eyedropper to select a different key Color. If you are working with a human subject, pick a color from a background location close to the subject’s hair line, but not in the hair itself. Use the eyedropper to choose a key Color from the image background. Boosting transparency might be necessary to ensure that the background shows through semi-transparent areas, although too much Lightness can result in print-through–that is, the background image might show through the foreground subject. Increasing Lightness makes the entire matte more transparent. Adjusting balance can enhance semi-transparent foreground objects and shadows. Too much Density can degrade the matte.īalance adjusts the balance between density and lightness. Increasing Density makes transparent areas more transparent and opaque areas more opaque. Set the Output menu to Composite before rendering. Show Matte allows you to view the matte as you adjust it. Composite displays the composited effect. The Output menu determines whether the composite image or the matte displays in the Comp or Canvas window. It provides several variations on basic split-screen views with the filtered clip placed next to the unedited original.įor more information on the Compare Mode, Click Here. The BCC Compare Mode provides a convenient mechanism to compare the effect result with the original source layer.
#CHROMA KEY MASK IN BORIS GRAFFITI FX PLUS#
FunctionīCC filters come with a library of factory installed presets plus the ability to create your own custom presets and preview them with the BCC FX Browser™.īCC filters also include common controls that configure global effect preferences and other host-specific effect settings.įor more information about working with presets and other common controls, Click Here. The values of the parameter adjustments in the FX Editor user interface are transferred to your host application.Chroma Key is used for compositing camera footage shot using a blue, green, or red screen as a backdrop over a new background video or a still image from a separate file. Click theApply button to return to the host application.Set the Brightness and Chroma as desired.Adjust Cycles to set the amount of bands and Density to control the amount of rays.Change Spread to control the distribution of the bands and Taper to fade the edges.Click and drag the point control to move the Chroma Bands and use Scale to change the size.Click on the FX Editor button.The FX Editor user interface opens and consists of Presets, Parameters and Viewer windows.Apply BCC Chroma Bands from the BCC Lights Unit category.
The selection can be based on geometric shapes or on the image’s luma/color properties.įor more information on the PixelChooser, Click Here. Working with The Filter The PixelChooser is generally used to select a portion of the image and restrict an effect to just the selected area while maintaining the original image content in unselected regions. PixelChooser: The BCC PixelChooser provides simple, built-in masking of the effect result. Noise: Controls the amount of noise in the bands.
Offset: Determines the band’s inner diameter. Spread: Changes the distribution of the bands. This looks kind of like the Add blend mode, but highlights are retained. Screen: The rainbow is combined with the image using a Screen blend mode.Add: The rainbow is added to your image.Filter Parametersīlend: Determines the blend mode used to create the rainbow effect. To select from a selection of factory installed and user-generated presets, open the BCC+ FX Editor interface and pick one from the Presets window.
0 kommentar(er)
