Set Image output from extension

[Taifun]

This thread up to now was about fixing the bugs in your extension
Now it looks like you are close to publish it
Please start a new thread in category Extensions to present your app considering

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Also let me suggest some cosmetical changes
your extension is about images, so the word image is unnecessary to use in method names

For example
OutputImagePath --> OutputPath
ImagePath --> OutputPath
These are the setter and getter properties of the output path, so the property name should be the same and not different

Image --> InputPath
BlurImage --> Blur
BlurImageByColumn --> BlurByColumn
Etc
The methods ImgHeight and ImgWidth should better be properties
ImgHeight --> Height
ImgWidth --> Width
There still is a spelling error for
SetBrigthness --> SetBrightness

Taifun