-region and -channel option ?

[liuhaitao827]

Hi, I am trying to implement following commands in Magick.Net

magick redeye1.jpg -region "36x36+120+150" -channel r -fx "(hypot(abs(138-i),abs(168-j))<=18 && p.r/((p.g+p.b)/2)>1.5)?(p.g+p.b)/2:p.r" redeyecls.jpg

But, I don't find 'region' or 'channel' methods in Magick.Net. Any advice?
Thank you in advance!

[dlemstra]

The -channel is an extra Channel argument to the methods so you will need to do this image.Fx((hypot(abs(138-i),abs(168-j))<=18 && p.r/((p.g+p.b)/2)>1.5)?(p.g+p.b)/2:p.r", Channels.Red)

And with the following readSettings you can read only an area of the image:

var readSettings = new MagickReadSettings
{
    ExtractArea = new MagickGeometry(120, 150, 36, 36),
};

[liuhaitao827]

This is helpful, thank you!