4. The apparatus of claim 3 , wherein the labeling each pixel further comprises the processor configured to: determine if each pixel in the image represents an edge; estimate distribution of edge density in a neighborhood of the each pixel in the image; and use the distribution to determine a descriptive type of each pixel and labeling each pixel accordingly.
4. The apparatus of claim 3 , wherein the labeling each pixel further comprises the processor configured to: determine if each pixel in the image represents an edge; estimate distribution of edge density in a neighborhood of the each pixel in the image; and use the distribution to determine a descriptive type of each pixel and labeling each pixel accordingly. 5. The apparatus of claim 4 , wherein the descriptive type includes a type taken from a group of types including: uniform, noise, contour, region boundary, texture boundary, transition region, coarse texture, and fine texture.