Anime Scan Retouch/Fix in Gimp

  Warning: The automatic technique mentioned in here, can improve the image color, or it can make the image bad.. If so, then just stick to manual techniques.  

Here is a easy way to fix your scans in gimp! This way will revamp the colors in your anime scan, smooth out your whites and blacks.

Step 1: Filters > Selective Gaussian Blur max. delta must not be above 10.. your aim is to smooth the image color without losing details. Leave blur radius at 5.00 too~ Press okay once you got a minimal effect.

Step 2: Go to filters > enhance > unsharpen mask.. Radius: 5 amount: no more than .2 threshold: between 20 through 30...

Step 3: colors > auto > white balance

Step 4: colors > auto > color enhance

MANUAL TECHNIQUES:
Adjust brightness/Darkness Manuel
Color Correction Manuel



Here the result(before/after):