images.Gamma
Returns an image filter that performs gamma correction on an image.
Syntax
images.Gamma GAMMA
Returns
images.filter
The gamma value must be positive. A value greater than 1 lightens the image, while a value less than 1 darkens the image. The filter has no effect when the gamma value is 1.
Usage
Create the filter:
{{ $filter := images.Gamma 1.667 }}使用 images.Filter 函数应用滤镜：
{{ with resources.Get "images/original.jpg" }}
{{ with . | images.Filter $filter }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}您也可以使用 Resource 对象上的 Filter 方法应用滤镜：
{{ with resources.Get "images/original.jpg" }}
{{ with .Filter $filter }}
<img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
{{ end }}
{{ end }}
{{__hugo_ctx/}}
## Example
Original
Processed
