ImageResizer.Plugins.AutoCrop

• Master
  

Description

Automatic cropping for images with a flat background. Works with ImageResizer.NET 4.0.5 and above.

Uses either a relative luminance tolerance or an edge detection filter to determine which area to crop. Preserves intended aspect ratio of image.

Features

• Crops images with a flat background
• Configurable x and y padding
• Configurable treshold
• Configurable analysis method (color difference or edge detection)
• Can override FitMode of regular resizer

How to get started?

Requires ImageResizer 4.0.5 or above

• install-package ImageResizer.Plugins.AutoCrop

Will add the following to web.config

<configuration>
    <resizer>
        <plugins>
            <add name="AutoCrop" />
        </plugins>
    </resizer>    
</configuration>

Details

Plugin unlocks the ability to use the following query parameters for images

Parameter	Description	Example
autoCrop	activates the plugin with the provided values	?autoCrop=10 or ?autoCrop=10;20;30
x-padding	the first provided parameter value	10
y-padding	the second provided parameter value	10;20
threshold	the third provided parameter value, background color deviation threshold	10;20;30
autoCropMode (optional)	overrides the fit mode if the autoCrop is successfully completed	?autoCropMode=pad
autoCropMethod (optional)	determines which method to use (tolerance or edge)	?autoCropMethod=tolerance
autoCropDebug (optional)	displays a debug visualisation of how the plugin evaluated instead of cropping	?autoCropDebug=1

Package maintainer

https://github.com/svenrog

Changelog

Changelog