Abstract: A method for electronic imaging, consisting of forming an image having a background color and a non-background color on a plurality of pixels in a color mosaic image sensor, and receiving from each of the plurality of pixels a respective initial signal responsive to the image. The method further includes determining the background color of the image responsive to the initial signals, determining the non-background color of the image responsive to the initial signals, and calculating an adjusted signal for each pixel of the plurality of pixels responsive to the initial signal of the pixel and to at least one of the background color and the non-background color.

Abstract: A peripheral module for a hand-held computing device having a device electrical port at a device surface thereof. The module includes a first electrical port receiver at a first surface of the module, configured to mate with the device electrical port of the hand-held computing device, and a first peripheral electrical port, of substantially identical shape and electrical functionality to the device electrical port, at a second surface of the module, opposite the first surface. The first peripheral electrical port is available to mate with a further peripheral module having a second electrical port receiver that is also configured to mate with the device electrical port of the hand-held computing device. Circuitry, coupled between the first electrical port receiver and the first peripheral electrical port, is adapted to carry out an application function in association with the computing device while the first electrical port receiver is mated with the device electrical port of the computing device.

Abstract: Apparatus for producing a panoramic image of a scene, including an image capture device, which is adapted to capture a plurality of sub-images of the scene at a respective plurality of orientations of the device. The apparatus further includes a direction indicator, which is coupled to the image capture device so as to determine the orientation of the device and to indicate the orientations at which the sub-images should be captured so that the plurality of sub-images can be stitched together to form the panoramic image of the scene. The apparatus is able to produce a panoramic image of a horizontal or of a vertical scene.