We present a new approach for computer-generated integral photography (IP) based on ray tracing, for the reconstruction of high quality photorealistic 3-D images of increased complexity. With the proposed methodology, all the optical elements of a single-stage IP capturing setup are physically modeled for the production of real and virtual orthoscopic IP images with depth control. This approach is straightforward for translating a computer-generated 3-D scene to an IP image, and constitutes a robust methodology for developing modules that can be easily integrated in existing ray tracers. An extension of this technique enables the generation of photorealistic 3-D videos [integral videography (IV)] and provides an invaluable tool for the development of 3-D video processing algorithms.
One of the most promising techniques for visualizing three-dimensional objects is Integral Photography (IP). Two common methods used in synthetic IP generation involve the development of simplified raytracing algorithms for elementary 3D objects or the realization of pinhole arrays. We present a technique utilizing POVRAY’s raytracing capabilities to generate synthetic, high-quality and photorealistic integral images, by accurately modeling an actual microlens array along with the necessary optics. Our work constitutes a straightforward approach for translating a computer generated 3D model to an IP image and a robust method to develop modules that can be easily integrated in existing raytracers. The proposed technique simulates the procedure of a single stage IP capture, for producing a real orthoscopic IP image. Full control is provided over geometry selection, size and refractive index of the elementary microlenses. Specifically our efforts have been focused on the development of arrays with different geometries (square or hexagonal) in order to demonstrate the parameterization capabilities of the proposed IP setup. Moreover detailed benchmarking is provided over a variety of sizes and geometries of microlens arrays.