Abstract
This paper presents the full technology chain supporting wide angle digital holographic television from holographic capture of real world objects/scenes to holographic display with an extended viewing angle. The data are captured with multiple CCD cameras located around an object. The display system is based on multiple tilted spatial light modulators (SLMs) arranged in a circular configuration. The capture-display system is linked by a holographic data processing module, which allows for significant decoupling of the capture and display systems. The presented experimental results, based on the reconstruction of real world, variable in time scenes, illustrates imaging dynamics, viewing angle and quality.
Highlights
The holographic technique is based on the capture and display of 3D real world objects or scenes [1]
The current state of technology does not allow development of the full holographic TV technology chain, including capture – transmission – processing and display, with high imaging quality for sufficiently big observation volumes as expected in commercial TVs. This is the effect of insufficient space bandwidth product (SBP) that can be currently captured by a single CCD/CMOS camera and displayed by a spatial light modulator (SLM)
The value of the frame rate is a result of the timings of compression, internet transmission, decompression, filtering, tilt removal and display of six high definition (1920 x 1080 pixels) holograms, since our system is based on multi wavefront frames
Summary
The holographic technique is based on the capture and display of 3D real world objects or scenes [1]. In displays there are two main approaches to overcome this limitation: (i) reconstructing only a small part of a wavefront originating from an object (from a large volume of 3D scenes) and applying an eye tracking system supporting a single observer [8] and (ii) creating high resolution, big aperture (high pixel count) holographic display which provides simultaneously total information about a displayed image within a wide viewing zone for multiple observers [9]. In the paper for the first time we present a holographic television system which addresses all the necessary features of a multi wavefront video system including: dynamic object capture, data compression, transfer and processing and 3D real world scene display.
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