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Update index.md

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Bjørn Erik Pedersen authored and GitHub committed 2021-12-11 16:04:06 +01:00
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content/en/functions/images/index.md
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@@ -11,12 +11,9 @@ keywords: [images]
toc: true toc: true
--- ---
## Image Filters
See [images.Filter](#filter) for how to apply these filters to an image. See [images.Filter](#filter) for how to apply these filters to an image.
### Overlay ## Overlay
{{< new-in "0.80.0" >}} {{< new-in "0.80.0" >}}
@@ -40,7 +37,7 @@ A shorter version of the above, if you only need to apply the filter once:
The above will overlay `$logo` in the upper left corner of `$img` (at position `x=50, y=50`). The above will overlay `$logo` in the upper left corner of `$img` (at position `x=50, y=50`).
### Text ## Text
{{< new-in "0.90.0" >}} {{< new-in "0.90.0" >}}
@@ -75,7 +72,7 @@ You can load a custom font if needed. Load the font as a Hugo `Resource` and set
``` ```
### Brightness ## Brightness
{{% funcsig %}} {{% funcsig %}}
images.Brightness PERCENTAGE images.Brightness PERCENTAGE
@@ -93,7 +90,7 @@ images.ColorBalance PERCENTAGERED PERCENTAGEGREEN PERCENTAGEBLUE
ColorBalance creates a filter that changes the color balance of an image. ColorBalance creates a filter that changes the color balance of an image.
The percentage parameters for each color channel (red, green, blue) must be in range (-100, 500). The percentage parameters for each color channel (red, green, blue) must be in range (-100, 500).
### Colorize ## Colorize
{{% funcsig %}} {{% funcsig %}}
images.Colorize HUE SATURATION PERCENTAGE images.Colorize HUE SATURATION PERCENTAGE
@@ -104,7 +101,7 @@ The hue parameter is the angle on the color wheel, typically in range (0, 360).
The saturation parameter must be in range (0, 100). The saturation parameter must be in range (0, 100).
The percentage parameter specifies the strength of the effect, it must be in range (0, 100). The percentage parameter specifies the strength of the effect, it must be in range (0, 100).
### Contrast ## Contrast
{{% funcsig %}} {{% funcsig %}}
images.Contrast PERCENTAGE images.Contrast PERCENTAGE
@@ -113,7 +110,7 @@ images.Contrast PERCENTAGE
Contrast creates a filter that changes the contrast of an image. Contrast creates a filter that changes the contrast of an image.
The percentage parameter must be in range (-100, 100). The percentage parameter must be in range (-100, 100).
### Gamma ## Gamma
{{% funcsig %}} {{% funcsig %}}
images.Gamma GAMMA images.Gamma GAMMA
@@ -123,7 +120,7 @@ Gamma creates a filter that performs a gamma correction on an image.
The gamma parameter must be positive. Gamma = 1 gives the original image. The gamma parameter must be positive. Gamma = 1 gives the original image.
Gamma less than 1 darkens the image and gamma greater than 1 lightens it. Gamma less than 1 darkens the image and gamma greater than 1 lightens it.
### GaussianBlur ## GaussianBlur
{{% funcsig %}} {{% funcsig %}}
images.GaussianBlur SIGMA images.GaussianBlur SIGMA
@@ -139,7 +136,7 @@ images.Grayscale
Grayscale creates a filter that produces a grayscale version of an image. Grayscale creates a filter that produces a grayscale version of an image.
### Hue ## Hue
{{% funcsig %}} {{% funcsig %}}
images.Hue SHIFT images.Hue SHIFT
@@ -148,7 +145,7 @@ images.Hue SHIFT
Hue creates a filter that rotates the hue of an image. Hue creates a filter that rotates the hue of an image.
The hue angle shift is typically in range -180 to 180. The hue angle shift is typically in range -180 to 180.
### Invert ## Invert
{{% funcsig %}} {{% funcsig %}}
images.Invert images.Invert
@@ -156,7 +153,7 @@ images.Invert
Invert creates a filter that negates the colors of an image. Invert creates a filter that negates the colors of an image.
### Pixelate ## Pixelate
{{% funcsig %}} {{% funcsig %}}
images.Pixelate SIZE images.Pixelate SIZE
@@ -164,7 +161,7 @@ images.Pixelate SIZE
Pixelate creates a filter that applies a pixelation effect to an image. Pixelate creates a filter that applies a pixelation effect to an image.
### Saturation ## Saturation
{{% funcsig %}} {{% funcsig %}}
images.Saturation PERCENTAGE images.Saturation PERCENTAGE
@@ -172,7 +169,7 @@ images.Saturation PERCENTAGE
Saturation creates a filter that changes the saturation of an image. Saturation creates a filter that changes the saturation of an image.
### Sepia ## Sepia
{{% funcsig %}} {{% funcsig %}}
images.Sepia PERCENTAGE images.Sepia PERCENTAGE
@@ -180,7 +177,7 @@ images.Sepia PERCENTAGE
Sepia creates a filter that produces a sepia-toned version of an image. Sepia creates a filter that produces a sepia-toned version of an image.
### Sigmoid ## Sigmoid
{{% funcsig %}} {{% funcsig %}}
images.Sigmoid MIDPOINT FACTOR images.Sigmoid MIDPOINT FACTOR
@@ -189,7 +186,7 @@ images.Sigmoid MIDPOINT FACTOR
Sigmoid creates a filter that changes the contrast of an image using a sigmoidal function and returns the adjusted image. Sigmoid creates a filter that changes the contrast of an image using a sigmoidal function and returns the adjusted image.
It's a non-linear contrast change useful for photo adjustments as it preserves highlight and shadow detail. It's a non-linear contrast change useful for photo adjustments as it preserves highlight and shadow detail.
### UnsharpMask ## UnsharpMask
{{% funcsig %}} {{% funcsig %}}
images.UnsharpMask SIGMA AMOUNT THRESHOLD images.UnsharpMask SIGMA AMOUNT THRESHOLD