1. A method, comprising: determining movement of an object in a video sequence between a current image of the video sequence and a temporally adjacent image for each of a plurality of windows that cover a contour of the object; and generating, using bandwidth values that are assigned to each of the plurality of windows based on the determining, a blended map for the current image that provides a smooth transition between the plurality of windows in the current image, the bandwidth values based on movement values of the windows that indicate how much the object has moved in a respective window between the current image and the temporally adjacent image.