Abstract: An image stabilizer selectively adds image data from a background image to the current image to compensate for data in the current image that is missing due to a sudden shift in the current image relative to the previous images. The current image is warped into the coordinate system of the background image and then the warped current image is merged with the background image to replace any blank areas in the current image with corresponding pixel values from the background image. The image data from the background image which is to be substituted into the warped current image is subject to a low-pass filtering operation before it is merged with the warped current image. The warped current image is merged with the background image to form a modified background image which is then merged with the warped current image. The background image is, itself, warped to track camera motion in obtaining the current image before the background image is merged with the warped current image.