16. The computer program product of claim 15 , wherein the computer readable program further causes the computer to: determine a region of interest for the object in the query image based on the luminance features; and determine a region of interest for the indexed image based on the luminance features.
17. The computer program product of claim 16 , wherein computing the color transfer function further comprises collecting the sample colors from the region of interest determined for the cropped image and the region of interest determined for the indexed image.