
Filters
VideoCanvas has lot's of filters for applying various effects such color corrections, masking, blurring etc. Most of them come with Mac OS X.
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Addition
- Adds color components to achieve a brightening effect. This filter is typically used to add highlights and lens flare effects.
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Adjust transparency
- Adjusts the transparency of the image
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Bars Swipe Transition
- Transitions from one image to another by swiping rectangular portions of the foreground image to disclose the target image.
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Blend With Mask
- Uses values from a grayscale mask to interpolate between an image and the background. When a mask value is 0.0, the result is the background. When the mask value is 1.0, the result is the image.
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Bloom
- Softens edges and applies a pleasant glow to an image.
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Blur cirle
- Clears and blurs a circle around the image center
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Blur edges
- Clears and blurs the edges round the image
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Box Blur
- Smooths or sharpens an image using a box-shaped convolution kernel.
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Bump Distortion
- Creates a concave or convex bump that originates at a specified point in the image.
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Bump Distortion Linear
- Creates a bump that originates from a linear portion of the image.
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CMYK Halftone
- Creates a color, halftoned rendition of the source image, using cyan, magenta, yellow, and black inks over a white page.
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Checkerboard
- Generates a checkerboard pattern. You can specify the checkerboard size and colors, and the sharpness of the pattern.
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Circle Splash Distortion
- Distorts the pixels starting at the circumference of a circle and emanating outward.
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Circular Screen
- Simulates a circular-shaped halftone screen.
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Circular Wrap Distortion
- Wraps an image around a transparent circle. The distortion of the image increases with the distance from the center of the circle.
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Color Blend Mode
- Uses the luminance values of the background with the hue and saturation values of the source image. This mode preserves the gray levels in the image.
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Color Burn Blend Mode
- Darkens the background image samples to reflect the source image samples. Source image sample values that specify white do not produce a change.
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Color Controls
- Adjusts saturation, brightness, and contrast values.
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Color Cube
- Uses a three-dimensional color table to transform the source image pixels. The color table must be composed of floating-point RGBA cells that use premultiplied alpha. The cells are organized in a standard ordering. The columns and rows of the data are indexed by red and green, respectively. Each data plane is followed by the next higher plane in the data, with planes indexed by blue.
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Color Dodge Blend Mode
- Brightens the background image samples to reflect the source image samples. Source image sample values that specify black do not produce a change.
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Color Invert
- Inverts the colors in an image.
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Color Map
- Performs a nonlinear transformation of source color values using mapping values provided in a table.
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Color Matrix
- Multiplies source color values and adds a bias factor to each color component.
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Color Monochrome
- Remaps colors so they fall within shades of a single color.
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Color Posterize
- Remaps red, green, and blue color components to the number of brightness values you specify for each color component. This filter flattens colors to achieve a look similar to that of a silk-screened poster.
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Comic Effect
- Simulates a comic book drawing by outlining edges and applying a color halftone effect.
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Constant Color
- Generates a solid color. You typically use the output of this filter as the input to another filter.
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Copy Machine
- Transitions from one image to another by simulating the effect of a copy machine.
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Crop
- Applies a crop to an image. The size and shape of the cropped image depend on the rectangle you specify.
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Crystallize
- Creates polygon-shaped color blocks by aggregating source pixel-color values.
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Darken Blend Mode
- Creates composite image samples by choosing the darker samples (from either the source image or the background). The result is that the background image samples are replaced by any source image samples that are darker. Otherwise, the background image samples are left unchanged.
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Difference Blend Mode
- Subtracts either the source image sample color from the background image sample color, or the reverse, depending on which sample has the greater brightness value. Source image sample values that are black produce no change; white inverts the background color values.
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Disc Blur
- Smooths or sharpens an image using a disc-shaped convolution kernel.
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Disintegrate with Mask
- Transitions from one image to another using the shape defined by a mask.
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Displacement Distortion
- Applies the grayscale values of the second image to the first image. The output image has a texture defined by the grayscale values.
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Dissolve
- Uses a dissolve to transition from one image to another.
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Dot Screen
- Simulates the dot patterns of a halftone screen.
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Edge Work
- Produces a stylized black-and-white rendition of an image that looks similar to a woodblock cutout.
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Edges
- Finds all edges in an image and displays them in color.
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Eightfold Reflected Tile
- Produces a tiled image from a source image by applying an 8-way reflected symmetry.
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Exclusion Blend Mode
- Produces an effect similar to that produced by the Difference Blend Mode filter but with lower contrast. Source image sample values that are black do not produce a change; white inverts the background color values.
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Exposure Adjust
- Adjusts the exposure setting for an image similar to the way you control exposure for a camera when you change the F-stop.
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False Color
- Maps luminance to a color ramp of two colors. False color is often used to process astronomical and other scientific data, such as ultraviolet and x-ray images.
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Flash
- Transitions from one image to another by creating a flash. The flash originates from a point you specify. Small at first, it rapidly expands until the image frame is completely filled with the flash color. As the color fades, the target image begins to appear.
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Fourfold Reflected Tile
- Produces a tiled image from a source image by applying a 4-way reflected symmetry.
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Fourfold Rotated Tile
- Produces a tiled image from a source image by rotating the source at increments of 90 degrees.
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Fourfold Translated Tile
- Produces a tiled image from a source image by applying 4 translation operations.
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Gamma Adjust
- Adjusts midtone brightness. This filter is typically used to compensate for nonlinear effects of displays. Adjusting the gamma effectively changes the slope of the transition between black and white.
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Gaussian Blur
- Spreads source pixels by an amount specified by a Gaussian distribution.
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Gaussian Gradient
- Generates a gradient that varies from one color to another using a Gaussian distribution.
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Glass Distortion
- Distorts an image by applying a glass-like texture. The raised portions of the output image are the result of applying a texture map.
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Glass Lozenge
- Creates a lozenge-shaped lens and distorts the portion of the image over which the lens is placed.
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Glide Reflected Tile
- Produces a tiled image from a source image by translating and smearing the image.
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Gloom
- Dulls the highlights of an image.
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Hard Light Blend Mode
- Either multiplies or screens colors, depending on the source image sample color. If the source image sample color is lighter than 50% gray, the background is lightened, similar to screening. If the source image sample color is darker than 50% gray, the background is darkened, similar to multiplying. If the source image sample color is equal to 50% gray, the source image is not changed. Image samples that are equal to pure black or pure white result in pure black or white. The overall effect is similar to what you would achieve by shining a harsh spotlight on the source image.
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Hatched Screen
- Simulates the hatched pattern of a halftone screen.
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Height Field From Mask
- Produces a continuous three-dimensional, loft-shaped height field from a grayscale mask. The white values of the mask define those pixels that are inside the height field while the black values define those pixels that are outside. The field varies smoothly and continuously inside the mask, reaching the value 0 at the edge of the mask. You can use this filter with the Shaded Material filter to produce extremely realistic shaded objects.
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Hexagonal Pixellate
- Displays an image as colored hexagons whose color is an average of the pixels they replace.
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Hole Distortion
- Creates a circular area that pushes the image pixels outward, distorting those pixels closest to the circle the most.
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Hue Adjust
- Changes the overall hue, or tint, of the source pixels.
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Hue Blend Mode
- Uses the luminance and saturation values of the background with the hue of the source image.
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Kaleidoscope
- Produces a kaleidoscopic image from a source image by applying 12-way symmetry.
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Lanczos Scale Transform
- Produces a high-quality, scaled version of a source image. You typically use this filter to scale down an image.
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Lenticular Halo
- Simulates a halo that is generated by the diffraction associated with the spread of a lens. This filter is typically applied to another image to simulate lens flares and similar effects.
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Lighten Blend Mode
- Creates composite image samples by choosing the lighter samples (either from the source image or the background). The result is that the background image samples are replaced by any source image samples that are lighter. Otherwise, the background image samples are left unchanged.
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Line Overlay
- Creates a sketch that outlines the edges of an image in black, leaving the non-outlined portions of the image transparent. The result has alpha and is rendered in black, so it won't look like much until you render it over another image using source over compositing.
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Line Screen
- Simulates the line pattern of a halftone screen.
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Linear Gradient
- Generates a gradient that varies along a linear axis between two defined endpoints.
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Luminosity Blend Mode
- Uses the hue and saturation of the background with the luminance of the source image. This mode creates an effect that is inverse to the effect created by the Color Blend Mode filter.
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Make color transparent
- Makes the specified color transparent
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Mask To Alpha
- Converts a grayscale image to a white image that is masked by alpha. The white values from the source image produce the inside of the mask; the black values become completely transparent.
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Maximum
- Computes the maximum value, by color component, of two input images and creates an output image using the maximum values. This is similar to dodging.
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Maximum Component
- Converts an image to grayscale using the maximum of the three color components.
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Median
- Computes the median value for a group of neighboring pixels and replaces each pixel value with the median. The effect is to reduce noise.
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Minimum
- Computes the minimum value, by color component, of two input images and creates an output image using the minimum values. This is similar to burning.
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Minimum Component
- Converts an image to grayscale using the minimum of the three color components.
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Mod
- Transitions from one image to another by revealing the target image through irregularly shaped holes.
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Motion Blur
- Blurs an image to simulate the effect of using a camera that moves a specified angle and distance while capturing the image.
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Multiply
- Multiplies the color component of two input images and creates an output image using the multiplied values. This filter is typically used to add a spotlight or similar lighting effect to an image.
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Multiply Blend Mode
- Multiplies the source image samples with the background image samples. This results in colors that are at least as dark as either of the two contributing sample colors.
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Noise Reduction
- Reduces noise using a threshold value to define what is considered noise. Small changes in luminance below that value are considered noise and get a noise reduction treatment, which is a local blur. Changes above the threshold value are considered edges, so they are sharpened.
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Op Tile
- Segments an image, applying any specified scaling and rotation, and then assembles the image again to give an op art appearance.
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Overlay Blend Mode
- Either multiplies or screens the source image samples with the background image samples, depending on the background color. The result is to overlay the existing image samples while preserving the highlights and shadows of the background. The background color mixes with the source image to reflect the lightness or darkness of the background.
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Page Curl
- Transitions from one image to another by simulating a curling page, revealing the new image as the page curls.
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Parallelogram Tile
- Warps an image by reflecting it in a parallelogram, and then tiles the result.
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Passpartour
- Fills the area outside the image and all transparent pixels with a color and makes all non obese pixels transparent
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Perspective Tile
- Applies a perspective transform to an image and then tiles the result.
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Perspective Transform
- Alters the geometry of an image to simulate the observer changing viewing position. You can use the perspective filter to skew an image.
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Pinch Distortion
- Creates a rectangular-shaped area that pinches source pixels inward, distorting those pixels closest to the rectangle the most.
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Pixellate
- Makes an image blocky.
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Pointillize
- Renders the source image in a pointillistic style.
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Radial Gradient
- Generates a gradient that varies radially between two circles having the same center. It is valid for one of the two circles to have a radius of 0.
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Random Generator
- Generates an image of infinite extent whose pixel values are made up of four independent, uniformly-distributed random numbers in the 0 to 1 range.
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Ripple
- Transitions from one image to another by creating a circular wave that expands from the center point, revealing the new image in the wake of the wave.
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Saturation Blend Mode
- Uses the luminance and hue values of the background with the saturation of the source image. Areas of the background that have no saturation (that is, pure gray areas) do not produce a change.
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Screen Blend Mode
- Multiplies the inverse of the source image samples with the inverse of the background image samples. This results in colors that are at least as light as either of the two contributing sample colors.
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Sepia Tone
- Maps the colors of an image to various shades of brown.
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Shaded Material
- Produces a shaded image from a height field. The height field is defined to have greater heights with lighter shades, and lesser heights (lower areas) with darker shades. You can combine this filter with the Height Field From Mask filter to produce quick shadings of masks, such as text.
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Sharpen Luminance
- Increases image detail by sharpening. It operates on the luminance of the image; the chrominance of the pixels remains unaffected.
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Sixfold Reflected Tile
- Produces a tiled image from a source image by applying a 6-way reflected symmetry.
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Sixfold Rotated Tile
- Produces a tiled image from a source image by rotating the source at increments of 60 degrees.
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Soft Light Blend Mode
- Either darkens or lightens colors, depending on the source image sample color. If the source image sample color is lighter than 50% gray, the background is lightened, similar to dodging. If the source image sample color is darker than 50% gray, the background is darkened, similar to burning. If the source image sample color is equal to 50% gray, the background is not changed. Image samples that are equal to pure black or pure white produce darker or lighter areas, but do not result in pure black or white. The overall effect is similar to what you would achieve by shining a diffuse spotlight on the source image.
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Source Atop
- Places the source image over the background image, then uses the luminance of the background image to determine what to show. The composite shows the background image and only those portions of the source image that are over visible parts of the background.
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Source In
- Uses the second image to define what to leave in the source image, effectively cropping the image.
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Source Out
- Uses the second image to define what to take out of the first image.
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Source Over
- Places the second image over the first.
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Spot Color
- Replaces one ore more color ranges with spot colors.
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Spot Light
- Applies a directional spotlight effect to an image.
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Star Shine
- Generates a starburst pattern. The output image is typically used as input to another filter
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Stripes
- Generates a stripe pattern. You can control the color of the stripes, the spacing, and the contrast.
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Sunbeams
- Generates a sun effect. You typically use the output of the sunbeams filter as input to a composite filter.
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Swipe
- Transitions from one image to another by simulating a swiping action.
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Torus Lens Distortion
- Creates a torus-shaped lens and distorts the portion of the image over which the lens is placed.
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Triangle Tile
- Maps a triangular portion of image to a triangular area and then tiles the result.
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Twelvefold Reflected Tile
- Produces a tiled image from a source image by applying a 12-way reflected symmetry.
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Twirl Distortion
- Rotates pixels around a point to give a twirling effect. You can specify the number of rotations as well as the center and radius of the effect.
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Unsharp Mask
- Increases the contrast of the edges between pixels of different colors in an image.
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Vortex Distortion
- Rotates pixels around a point to simulate a vortex. You can specify the number of rotations as well the center and radius of the effect.
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White Point Adjust
- Adjusts the reference white point for an image and maps all colors in the source using the new reference.
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Zoom Blur
- Simulates the effect of zooming the camera while capturing the image.