High-efficient computer-generated integral imaging based on the backward ray-tracing technique and optical reconstruction

Abstract

A high-efficient computer-generated integral imaging (CGII) method is presented based on the backward ray-tracing technique. In traditional CGII methods, the total rendering time is long, because a large number of cameras are established in the virtual world. The ray origin and the ray direction for every pixel in elemental image array are calculated with the backward ray-tracing technique, and the total rendering time can be noticeably reduced. The method is suitable to create high quality integral image without the pseudoscopic problem. Real time and non-real time CGII rendering images and optical reconstruction are demonstrated, and the effectiveness is verified with different types of 3D object models. Real time optical reconstruction with 90 × 90 viewpoints and the frame rate above 40 fps for the CGII 3D display are realized without the pseudoscopic problem.

Review on tabletop true 3D display

“…In addition, plenty of studies can offer optimization strategies to the integral imaging tabletop 3D display, such as increasing the viewing zone, 8,9,68 reducing the crosstalk, 10,11 and improving the rendering efficiency. [12][13][14][15]69 Among them, a viewing-angle-enhanced integral imaging system can achieve a super wide viewing angle of 120°by using tracking techniques. 8 This system has a viewing angle about twice as wide as that of the conventional one.…”

Spatial multiplexing holographic combiner for glasses-free augmented reality

“…Tremendous progress have been made in glasses-free 3D display [1]. Among all the glasses-free 3D display technologies, autostereoscopic 3D display features thin form factor, and compressed data for video rate display [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Xinzhu Sang et al proposed a 162-inch horizontal light field display that can reconstruct 3D images within a viewing angle of 40°by an LED panel, aspheric lens array (ALA) and holographic functional screen (HFS) [21].…”

Dual-View Integral Imaging System With Wide Viewing Angle And High Spatial Resolution

“…On the other hand, three-dimensional (3D) display which includes holographic display [7]- [10], volumetric display [11], super multi-view display [12], light field display [13], [14], and integral imaging [15]- [17] brings a vivid visual experience to the audiences, and has become an important part of the display technologies. Integral imaging, as one of the most promising 3D display technologies, has the advantages of full and smooth parallax, and visual fatigue free [18]- [21]. Therefore, the combination of the dual-view display and II has attracted increasing attentions from researchers [22]- [30].…”