1. A method comprising: receiving information identifying of a plurality of regions within an image, wherein each of the regions includes a group of pixels; receiving an intensity adjustment of at least one of the plurality of regions, wherein the intensity adjustment includes an adjustment of pixel intensity of the at least one region; adjusting the pixel intensities of the at least one plurality of regions based on the received intensity adjustment; interconnecting at least two of the plurality of regions by applying the adjusted pixel intensities to a two-dimensional method; generating intensity adjustments for at least one pixel outside the plurality of regions based on the received intensity adjustment of at least one of the plurality of regions and the interconnection of at least two of the plurality of regions; and applying the generated intensity adjustments to the image.