To take an image of object at long distance, a camera which has long-focus lens is used. However, if the focal length is long, the field of shooting becomes narrowed. Therefore, the shooting direction of the camera must be controlled. Recently, pan/tilt camera, whose direction is driven mechanically, has been used for surveillance. However, it is difficult to control quickly for long-focus camera because of weight of lens. We proposed a camera which has controllability of shooting direction without mechanical motion and high-resolution image of distant object based on computational imaging. The proposed camera is composed of ray-direction limiting optics and lens array. The direction of incident rays are limited and determined by the position of the aperture in the raydirection limiting optics, it is possible to control the shooting direction without mechanical motion. By using a lens array, a number of small optical images are formed on most area of the image sensor and digitized. Each digitized image is low-resolution because of small size. To reconstruct high-resolution image from low-resolution images, we adopted reconstruction-based super resolution technique. We did simulation under realistic conditions and confirmed the principle of the proposed camera.
To capture an image of object at long distance, viewing direction of the camera must be controlled when long-focal length is used. Therefore, there is method of control viewing direction at high-speed using galvanometer scanner. In this method, vibration of the mirror influences captured image due to mechanical motion. To get image of an object without mechanical motion, a camera should get an image of entire field of view. Then, object image can be got by clipping it from the image of entire field of view. In this method, camera must get also information other than the object at once to capture an entire image with wide range. Therefore, the object image is low-resolution because a number of image sensor's pixel which contributes the object is few. Thus, we propose a camera which has controllability of viewing direction and can capture highresolution image without mechanical motion based on computational imaging. By using this camera, it is possible to control at high-speed. Moreover the camera has no influence of vibration. We did a simulation and confirmed that the proposed camera which has controllability of viewing direction got highresolution image of an object without mechanical motion.