A method for capturing a sequence of video images, by means of an imager including an estimation of the parameters of a model of global motion between successive images. In an embodiment, the integrated circuit includes a bias circuit, an amplifier circuit and two feedback circuits. First and second sourcedrain regions laterally adjoin opposite sides of the channel region and are electrically isolated from the body region by an underlying first dielectric layer. In another embodiment, the shock mounting can provide a mechanically actuated retractable.