Recent issues on integral imaging and its applications

Abstract

In this review paper, the recent progress of 3D applications using integral imaging is introduced. Thanks to the progress of the flat panel displays, the quality of the 3D displays has also improved, resulting in the opening of more applications of the 3D display. The previous studies on integral imaging emphasized the improvement of the viewing quality of the integral imaging system, but the emergence of new technologies requires more than the replacement of the current 2D displays. New applications of the integral imaging method, such as displays with augmented reality, 3D information capturing, real-time processing, the projection-type method, and the integral floating method, and their recent research trends, are introduced.

Compact collimated display system using an aspherical screen combined with interaction

“…The remaining issue of the collimated display is the image compensation from projection optics. Due to the use of multiple projectors and the curved structure of both mirrors, the collimated images were compensated [8]. In general, when the images from multiple projectors are displayed on a flat screen, image blending is necessary.…”

Fast and high-resolution light field acquisition using defocus modulation

“…Generally, the light field can be captured by either a lens array with a standard camera [1,2] or a camera array [3,4]. From the view of geometric optics, those methods simultaneously record the two-dimensional (2D) spatial and angular information of the light rays, thus allowing perspective view image generation, refocusing of the scene, and free-glass 3D display [2,5,6]. However, lens array based light field capture [1][2][3][4][5][6][7][8] has to make an intrinsic trade-off between the the spatial and the angular resolution.…”

“…From the view of geometric optics, those methods simultaneously record the two-dimensional (2D) spatial and angular information of the light rays, thus allowing perspective view image generation, refocusing of the scene, and free-glass 3D display [2,5,6]. However, lens array based light field capture [1][2][3][4][5][6][7][8] has to make an intrinsic trade-off between the the spatial and the angular resolution. This is because when the size of the lenslet is large, one of the captured elemental image will have a large spatial resolution, therefore the covered quantity of lenslet that the light rays from the object scene will be small, which leads to less number of elemental images, i.e., low angular resolution.…”

Analysis of the pickup and display property of integral floating microscopy

“…The acquisition of the three-dimensional (3D) information of a microscopic (micro) object using a microscope has been an important issue in various research fields of late [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. There have been numerous researches to obtain the 3D information of micro objects using tomographic microscopy [2,3], confocal microscopy [4,5], and the lens array pickup method [6][7][8][9].…”