How to Completely Remove Red-Eye with Paint.net
Just about everyone who has ever taken a photo of people using flash will have encountered the problem of red eye, where the pupils of the subjects shine bright red as a result of light reflecting off the blood vessels in the back of the eyes.
Pixel-based image editors have always lended themselves to correcting this problem, and now many editors, like Paint.net, include dedicated tools specifically for dealing with red eye. Here we'll take a look at the simple steps to use the Red Eye Removal tool in Paint.net.
It is possible to use the Red Eye Removal tool in Paint.net without selecting the pupils first, but this can produce unexpected results if there are other areas in the image that contain significant amounts of red. For this reason it is best to take a few moments to select the pupils first.
To do this, just choose the Ellipse Select tool from the Tools palette – the round circle with a broken outline. Next, it is easier to zoom in first by clicking the magnifying glass with the '+' symbol in the top bar, and then click and draw a circular selection around one of the pupils.
Now you need to select any other visible pupils in the image that have a red eye problem. With the Ellipse Select tool still selected, click on the Selection Mode dropdown in the top bar and select the Add (union) mode. You can now draw selections around all the other pupils in the image.
With all the pupils selected, you can go to the Effects menu and then select Red Eye Removal from the Photo submenu. You can then adjust the Tolerance and Saturation sliders until you achieve the desired degree of correction to the red eye and then click OK.
You can now zoom out again, using the magnifying glass with the '-' symbol and view the results. To remove the selections around the pupils, with the Ellipse Select tool still the active tool, change the Selection Mode to Replace and then just click once anywhere on the image.
The Red Eye Removal tool in Paint.net makes correcting the problem of red eye a very easily fixed issue, even for those with very little experience of using pixel-based image editors.
Pixel-based image editors have always lended themselves to correcting this problem, and now many editors, like Paint.net, include dedicated tools specifically for dealing with red eye. Here we'll take a look at the simple steps to use the Red Eye Removal tool in Paint.net.
1. Select a Pupil
It is possible to use the Red Eye Removal tool in Paint.net without selecting the pupils first, but this can produce unexpected results if there are other areas in the image that contain significant amounts of red. For this reason it is best to take a few moments to select the pupils first.
To do this, just choose the Ellipse Select tool from the Tools palette – the round circle with a broken outline. Next, it is easier to zoom in first by clicking the magnifying glass with the '+' symbol in the top bar, and then click and draw a circular selection around one of the pupils.
2. Select the Remaining Pupils
Now you need to select any other visible pupils in the image that have a red eye problem. With the Ellipse Select tool still selected, click on the Selection Mode dropdown in the top bar and select the Add (union) mode. You can now draw selections around all the other pupils in the image.
3. Apply the Red Eye Removal Tool
With all the pupils selected, you can go to the Effects menu and then select Red Eye Removal from the Photo submenu. You can then adjust the Tolerance and Saturation sliders until you achieve the desired degree of correction to the red eye and then click OK.
4. Viewing Your Results
You can now zoom out again, using the magnifying glass with the '-' symbol and view the results. To remove the selections around the pupils, with the Ellipse Select tool still the active tool, change the Selection Mode to Replace and then just click once anywhere on the image.
The Red Eye Removal tool in Paint.net makes correcting the problem of red eye a very easily fixed issue, even for those with very little experience of using pixel-based image editors.
Source...