Filters
Filters allow you to apply various effects to a selected raster layer.They cannot be applied to multiple selected layers.
You can also create a selection area to limit the effect of the filter to only that area.
Depending on the expression color of the selected raster layer, it may not be possible to apply certain filters.
Blur
These filters blur the image on gray and color raster layers.To use them, select the relevant layer and tap Filter > Blur.
Blur and Blur (Strong)
These filters calculate the average colors around borders and sharp edges to make the image smoothly blurred.
Gaussian blur
This filter converts borders and sharp edges to make the image smoothly blurred.You can adjust and preview the effect from the Gaussian blur dialog.
Smoothing
This filter applies anti-aliasing to the edges of the outline to make jagged lines less noticeable.Anti-aliasing smooths outlines by adding intermediate colors at the boundaries between colors and at the edges of images.
Radial blur
This filter blurs the image by smoothing and averaging it in a radial pattern.Selecting it displays the Radial Blur dialog and a red x mark on the canvas that shows the center of the effect.Drag the x mark to change its position.
You can adjust the following settings and preview the effects from the Radial blur dialog.
Strength
Sets the strength of the blur.
Direction
Sets the direction of the blur from Both directions, Outward, or Inward.
Mode
Sets the mode from Box or Smooth. Box will average the values of each pixel and its surrounding pixels.Smooth will assign more weight to central pixels and average the values of pixels.
Preview
Shows a preview of the results on the canvas.
Motion blur
This filter smooths an image by averaging the border lines and sharp areas of the image in a given direction.
You can adjust and preview the effect from the Motion blur dialog.
Strength
Sets the strength of the blur.
Angle
Sets the angle of the blur.
Direction to blur
Sets the direction to blur from Both directions, Forward, and Backward.
Mode
Sets the mode from Box or Smooth. Box will average the values of each pixel and its surrounding pixels.Smooth will assign more weight to central pixels and average the values of pixels.
Preview
Turn this on to preview the results on the canvas.
Spin blur
This filter smooths an image by rotating it circularly in a given direction.Selecting this filter opens the Spin blur dialog and a red x mark on the canvas that shows the center of the effect.Drag the x mark to change its position.
You can adjust and preview the effect from the Spin blur dialog.
Strength
Sets the strength of the blur.
Direction
Sets the direction to blur from Both directions, Rotate right, or Rotate left.
Shape
Adjusts the vertical and horizontal proportion of the spin blue area.When set to 1.0, the blur area will be a perfect circle.Higher values make the ellipse vertically longer, while lower values make the ellipse horizontally longer.
Tilt
When the ellipse is not a perfect circle, you can set the angle of the blur area.
Sharpen
These filters sharpen images on gray and color raster layers.To use them, select the layer you want to apply the filter to, and tap Filter > Sharpen.
Unsharp mask
This filter sharpens images by enhancing the contrast at the image borders.You can set the strength and threshold value of the effect by specifying numerical values.
You can adjust and preview the effect from the Unsharp mask dialog.
Radius
Sets the size of the effect.
Strength
Sets the strength of the effect.
Threshold
Sets a minimum level of difference in values between adjacent areas to be recognized as different colors.A higher value detects fewer borders between colors.
Preview
Shows a preview of the results on the canvas.
Sharpen and Sharpen More
These filters sharpen images by enhancing the contrast between separate parts.There are two types, Sharpen and Sharpen More, which differ in the strength of the effect.
Effect
These filters apply special effects to an image on gray and color raster layers.To use these filters, select the layer you want to apply the filter to, and tap Filter > Effect.
Remove jpeg noise
This removes the noise that appears when images are saved in JPEG format.
Artistic
This applies the Artistic filter to the selected layer.You can give your images a brushstroke-like texture or extract lineart.
The Artistic filter can only be used on color raster layers.
You can adjust the following settings and preview the effect from the Artistic dialog.
Process
Sets the process of the filter.You can select from Color and lines, Color only, or Lines only.
Line width
Sets the thickness of the extracted lines.If Process > Color Only is selected, this setting will not be applied.
Line simplicity
The larger the value, the more the lines connect.If Process > Color Only is selected, this setting will not be applied.
Line density
The larger the value, the more of the line that is extracted.If Process > Color Only is selected, this setting will not be applied.
Line opacity
Sets the opacity of the lines.If Process > Color Only is selected, this setting will not be applied.
Line anti-aliasing
The larger the value, the stronger the anti-aliasing resulting in smoother lines.If Process > Color Only is selected, this setting will not be applied.
Color blending
Blurs the images without adjusting the boundaries of the colors.The larger the value, the stronger the blur effect.If Process > Lines Only is selected, this setting will not be applied.
Color blur
Sets the blur range.The larger the value, the stronger the blur effect.If Process > Lines Only is selected, this setting will not be applied.
Number of colors
Sets the number of colors.The larger the value, the more colors used to make up the gradients.If Process > Lines Only is selected, this setting will not be applied.
Preview
Shows a preview of the results on the canvas.
Mosaic
Pixelates an image.You can adjust and preview the effect with the Tile size slider in the Mosaic dialog.
Distort
These filters distort images on monochrome, gray, and color raster layers in a variety of ways.To use them, select the layer you want to apply the filter to, and tap any one of the options from Filter > Distort.
Pinch
This filter distorts images by pinching at the center point of the transformation.Selecting it displays the Pinch dialog and a red x mark on the canvas that shows the center of the effect.Drag to change its position.
You can adjust the following settings and preview the effect from the Pinch dialog.
Strength
Sets the degree of pinching to apply to the image.A positive value will pinch the image toward the center and a negative value will pinch the image away from the center.
Area
Selects the range in which to apply the transformation effect to the entire image.You can choose from Entire selection or Specify area (use Radius and Shape). Specify area (use Radius and Shape) will determine the range and vertical/horizontal ratio of the effect using the Radius and Shape settings.
Radius
Sets the range of the image distortion.
Shape
Sets the vertical/horizontal ratio of the area to distort the image.Set a positive value to make the transformation range narrower horizontally and a negative value to make the transformation range narrower vertically.
Preview
Shows a preview of the results on the canvas.
Ripple
This filter distorts the image by rotating from the center point of the transformation.Selecting it displays the Ripple dialog and a red x mark on the canvas that shows the center of the effect.Drag this to set the center of the effect.
You can adjust the following settings and preview the effect from the Ripple dialog.
Rotation
Transforms the image by rotating from the center point of the transformation.
Number of waves
Sets the number of waves that will be created.
Area
Selects the range in which to apply the transformation effect to the entire image.You can choose from Entire selection or Specify area (use Radius and Shape). Specify area (use Radius and Shape) will determine the range and vertical/horizontal ratio of the effect using the Radius and Shape settings.
Radius
Sets the range of the image distortion.
Shape
Sets the vertical/horizontal ratio of the area to distort the image.Set a positive value to make the transformation range narrower horizontally and a negative value to make the transformation range narrower vertically.
Preview
Previews the results on the canvas.
Curved surface
This filter distorts images by making them appear as if they are reflected on a cylindrical or spherical surface.Selecting it displays the Curved surface dialog and a red x mark on the canvas that shows the center of the effect.Drag this to move the center of the effect.
You can adjust the following settings and preview the effect from the Curved surface dialog.
Strength
Sets the degree to which to transform the image.A positive value distorts the image to the foreground and a negative value distorts the image to the background.
Method
Sets the type of curved face to apply to the image.You can select from Cylinder or Sphere.
Angle
Sets the angle when set to Cylinder.
Area
Selects the range in which to apply the transformation effect to the entire image.You can choose from Entire selection or Specify area (use Radius and Shape). Specify area (use Radius and Shape) will determine the range and vertical/horizontal ratio of the effect using the Radius and Shape settings.
Radius
Sets the range of the image distortion.
Shape
Sets the vertical/horizontal ratio of the area to distort the image.Set a positive value to make the transformation range narrower horizontally and a negative value to make the transformation range narrower vertically.
Preview
Turn this on to preview the results on the canvas.
Convert to Panorama
This filter distorts images by transforming into a panoramic-style image, as if captured with a 360-degree camera.
Selecting this filter opens the Convert to Panorama dialog and a red x mark on the canvas that shows the center of the effect.Drag to change its position.
You can adjust the following settings and preview the effect from the Convert to Panorama dialog.
Distortion
You can set the strength of the distortion.The higher the value, the stronger the effect.
Angle
You can specify the angle of the central axis through the center of the effect.When set to 0, the central axis is perpendicular to the canvas.Straight lines parallel to the central axis will remain straight after applying the effect.
Scale ratio
You can set the magnification of the image.The larger the Distortion setting, the more likely that gaps may appear at the edges of the image.By enlarging the image, these gaps at the edges of the image can be made less noticeable.
Geometric Distortion
This filter warps images by making them appear as though they are curving inwards or outwards.
Selecting this filter opens the Geometric Distortion dialog and a red x mark on the canvas that shows the center of the effect.Drag to change its position.
You can adjust the following settings and preview the effect from the Geometric Distortion dialog.
Distortion
You can set the strength of the distortion.Negative values distort the image inwards, and positive values distort the image outwards.The further the value is from 0, the stronger the effect.
Scale ratio
You can set the magnification of the image.The larger the Distortion setting, the more likely that gaps may appear at the edges of the image.By enlarging the image, these gaps at the edges of the image can be made less noticeable.
Polar coordinates
This distorts the image by converting the image coordinates to polar coordinates or rectangular coordinates.
You can adjust and preview the effect from the Polar coordinates dialog.
The available options under Transformation Method are as follows:
·Rectangular to polar: Converts the coordinates of the image from rectangular coordinates (all axes form a rectangle) to polar coordinates.
·Polar to rectangular: Converts the coordinates of the image from polar coordinates (graph indicated by radii and angles) to rectangular coordinates.
·Spherize: Transforms the image by making it appear as if it is projected on a spherical surface.
ZigZag
Transforms images into a wave-like oscillating pattern.
You can adjust the following settings and preview the effect from the ZigZag dialog.
Angle
Specifies the angle of the waves.
Wave height
Sets the height of the waves.
Number of waves
Sets the number of waves.
Preview
Turn this on to preview the results on the canvas.
Wave
This distorts the image by converting the image coordinates into a wave shape.
You can adjust the following settings and preview the effect from the Wave dialog.
Shape
Sets the method to distort the image.
·Sine: Converts the coordinates of the image to a sine wave (a wave with a cyclic transformation).
·Triangle: Converts the coordinates of the image to a triangular wave.
·Rectangular: Converts the coordinates of the image to a rectangular wave.
Number of waves
Sets the number of waves.
Wavelength (Minimum)
Sets the minimum distance between the highest points of the waves.
Wavelength (Maximum)
Sets the maximum distance between the highest points of the waves.
Amplitude (Minimum)
Sets the minimum amplitude of the wave shape.
Amplitude (Maximum)
Sets the maximum amplitude of the wave shape.
Horizontal ratio
Sets the horizontal ratio of the amplitude.
Vertical ratio
Sets the vertical ratio of the amplitude.
Undefined areas
Selects the process for the area of the image that is outside the wave area.
·Wrap around: Fills the edges of the image using the image on the opposite edge.
·Repeat edge pixels: Fills the edges of the image with the drawing color.
Regenerate
Regenerates the wave shape by selecting random values between the minimum and maximum values for Wavelength and Amplitude.
Preview
Turn this on to preview the results on the canvas.
Twirl
This filter transforms images by creating a twirl effect.Selecting it displays the Twirl dialog and a red x mark on the canvas that shows the center of the effect.Drag this to change its position.
You can adjust the following settings and preview the effect from the Twirl dialog.
Twist
Set the rotation angle for twisting the image.
Tension
Set the strength with which the image is pulled.
Area
Selects the range in which to apply the transformation effect to the entire image.You can choose from Entire selection or Specify area (use Radius and Shape). Specify area (use Radius and Shape) will specify the range and vertical/horizontal ratio of the transformation effect using the Radius and Shape settings.
Radius
Set the range of the image distortion.
Shape
Set the vertical/horizontal ratio of the area to distort the image.
Set a positive value to make the transformation range narrower horizontally.Set a negative value to make the transformation range narrower vertically.
Preview
Turn this on to preview the results on the canvas.
Fisheye lens
This filter distorts images by making them appear as if they are viewed through a fisheye lens.
Selecting it displays the Fisheye lens dialog and a red x mark on the canvas that shows the center of the effect.Drag this to change its position.
You can adjust the following settings and preview the effect from the Fisheye lens dialog.The area outside the "lens" is transparent.
Distortion
Set the distortion size of the lens.The larger the value, the further forward the center of the lens will appear.
Area
Selects the range in which to apply the transformation effect to the entire image.You can choose from Entire selection or Specify area (use Radius and Shape. Specify area (use Radius and Shape) will specify the range and vertical/horizontal ratio of the transformation effect using the Radius and Shape settings.
Radius
Set the range of the image distortion.
Shape
Set the vertical/horizontal ratio of the area to distort the image.Set a positive value to make the transformation range narrower horizontally.Set a negative value to make the transformation range narrower vertically.
Preview
Turn this on to preview the results on the canvas.
Perlin noise
The Render > Perlin noise filter creates a cloud-like pattern on the selected layer gray or color raster layer.You can also change the blending mode or opacity to use the created layer as a texture.
To use it, select the layer you want to apply the filter to, and tap Filter menu > Render > Perlin noise.
Important | When applying the Perlin noise filter, the effect is applied regardless of the content on the selected layer.Please use an empty layer for this filter. |
You can adjust the following settings and preview the effect from the Perlin noise dialog.
Scale
Sets the size of the effect.The larger the value, the larger the size of the pattern.
Amplitude
Sets the amplitude of the pattern.The larger the value, the higher the contrast of the pattern.
Attenuation
The larger the value, the rougher the pattern.
Repetition
The larger the value, the weaker the blur.
Offset X
Sets the starting position (horizontal axis) of the pattern.
Offset Y
Sets the starting position (vertical axis) of the pattern.
Preview
Shows a preview of the results on the canvas.
Correction
These filters are for correcting drawing lines on monochrome, gray, and color raster layers.Select the layer you want to apply the filter to and tap Filter > Correction.
Remove dust
This automatically detects and erases dust of a specified size or smaller and fills it in with the surrounding color.
You can adjust the following settings and preview the effect from the Remove dust dialog.
Dust size
Specifies the maximum size for an object to be recognized as dust.
Mode
Describes how dust will be detected and removed.You can select from the following:
·Remove dust from transparency: Small opaque or semi-opaque spots surrounded by transparency are recognized as dust.Dust is replaced with transparency.
·Remove dust from white background: Small non-white spots surrounded by white are recognized as dust.Dust is replaced with white.
·Fill transparent gaps with surrounding colors: Small transparent or semi-transparent spots in opaque areas are recognized as dust.Dust is replaced with the main surrounding color.
·Fill transparent gaps with foreground color: Small transparent or semi-transparent spots in opaque areas are recognized as dust.Dust is replaced with the current drawing color.
Preview
Shows a preview of the results on the canvas.
Memo | You can also remove dust with the Remove dust tool.See "Remove dust" for more information. |
Adjust line width
Adjusts the width of lines drawn on transparent parts of a raster layer.
You can adjust the following settings and preview the effect from the Adjust line width dialog.
Process
Sets how the width will be adjusted.You can select from Narrow or Thicken.
Scale
Allows you to set the degree to which to correct the line width.
At least 1 pixel
Leaves the central one-pixel line when Process is set to Narrow.
Preview
Shows a preview of the results on the canvas.