Improving super-resolution image reconstruction by in-plane camera rotation

In a digital optical imaging system, image resolution is constrained by several factors, including focus plane array pitch and optics. Super-resolution approaches aim at overcoming some of these limits by incorporating additional information of the object and/or combining several pictures of the same object, taken with some displacements between each other. This paper considers the second class of methods. The obtainable resolution improvement in this case has an upper limit, determined by the signal-to-noise ratio of the image taken. Moreover, some Fourier spectrum frequencies below this limit are unrestorable. Here an approach is introduced to overcome this by active control of the camera movements. An experiment, verifying the approach is presented.