Viewing-angle-enhanced integral imaging by lens switching

Abstract

In spite of the many advantages of integral imaging, its narrow viewing angle has been a disadvantage. We propose a method to enhance the viewing angle of integral imaging by opening and shutting each lens in the array (i.e., the elemental lenses) sequentially. We prove our idea by using a mask that has a pattern of an on-off vertical array of apertures. Moving the mask prevents the aliasing of a neighboring lens. Thus image overlap or image flipping is reduced and the viewing angle of the system is increased.

Three-Dimensional Imaging and Display through Integral Photography

“…The two main research topics have been to overcome the physical limitations and to search for new applications of integral imaging systems. For solving the physical limitations, several researchers have proposed solutions to the pseudoscopic problem [63][64][65][66], to the uncertainty in the position and angle of the microlenses and the elemental images with respect to the sensor [67][68][69][70], and to the limitation of the viewing angle [71][72][73][74]. Solutions to the limited depth of field [75][76][77] or to the detrimental effect of the facet braiding have also been proposed [78,79].…”

One-dimensional integral imaging display using a variable parallax barrier

“…[2][3][4] To overcome these disadvantages, a number of methods have been proposed. [5][6][7] A conventional one-dimensional integral imaging (1-DII) display reduces ray information by removing vertical parallax and provides 3-D images with high resolution in the vertical direction. [8][9][10] Although 1-DII autostereoscopic display resembles a multiview display, an important difference between the 1-DII display and the multiview autostereoscopic display is defined in terms of the position and the interval of beam condensing points.…”

Integral-floating Display with 360 Degree Horizontal Viewing Angle

“…Some research has been conducted in order to solve the narrow viewing angle problem [6][7][8]. Shifting a dynamic barrier array which is allocated between display device and lens array [6], or moving a lens array [7][8] in synchronization with the display device can improve the viewing angle of the integrated 3D images.…”

“…Shifting a dynamic barrier array which is allocated between display device and lens array [6], or moving a lens array [7][8] in synchronization with the display device can improve the viewing angle of the integrated 3D images. However, those methods require two-dimensional (2D) scanning movement of the lens array or barrier array, and hence they are not easy to implement in real-time.…”