Illumination compensation of microcamera image in monocentric multiscale foveated imaging system

A novel imaging system based on monocentric multiscale design and foveated imaging is proposed to realize wide field of view (FOV) and high resolution dynamic gaze of the moving target. Different from the existing monocentric multiscale cameras, the individual microcamera of the proposed imaging system relays a relatively large portion of the overall intermediate image. The proposed imaging system has many advantages, but the illumination of the microcamera image is nonuniform. The edge illumination of the microcamera image is low that makes it difficult to the subsequent image data processing. We analyze the illumination of the image theoretically and propose to use the relative illumination factor to compensate the low illumination region in corresponding fields. Finally, a specific microcamera is designed by using ZEMAX software and the illumination of the microcamera image is optimized by the proposed method, realizing the uniform illumination of the image.