Color Tone correction

Chromatic Aberration removal using white balancing

As you vary the incident illumination on a scene to acquire an image, there is a variation in the appearance of the color of objects in the image. As a result a white surface may appear greenish tinted if illuminated with green light, or may appear off-white if illuminated in sunlight or yellow light. The method of correcting these kinds of chromatic aberrations include white balancing, etc, and is broadly referred to as chromatic correction of images.