Electronic circuitry for processing signals and for providing an output for display including application software. Application software for processing signals obtained from sensors. Image acquisition and processing systems comprised of image sensors, orientation sensors, electronics and software for image and orientation signal processing, information storage devices and displays. Image acquisition systems comprised of image sensors such as video cameras, still cameras, CCD cameras, processors for processing image data, and displays. Image processing systems including computers, electronic circuitry and software. Image signal storage devices. Image rectification systems comprised of image sensors such as video cameras, still camera, CCD cameras, processors for processing image data, orientation sensors. Electronic circuits and software for processing image data and orientation data and displays Aiming systems for obtaining imagery of selected spatial areas. Weapon aiming systems for obtaining imagery of selected spatial areas used in connection with a weapon. Surveillance systems. Observation systems for remote viewing. Cameras. Gunsight cameras. Video cameras. Software for image orientation processing Image orientation systems including image sensors, orientation sensors, processors and displays such systems being used for assisted aiming such as assisted aiming of a weapon, for image rectification, and for image alignment; displays for use with the foregoing