Real time generation has been achieved for 8K full color rainbow hologram with normal PC. We extended previous 4K rainbow hologram calculation to 8K resolution, 7,680 x 4,320 pixel. The hologram is calculated with a line source approximation that can accelerate computation speed faster than the previous slit model based on image hologram calculation. Experimental results show that holograms are generated and displayed about 18 frames per second with 140,000 points. Additionally, the current line source model calculates 8K holograms 1.6 to 2.3 times faster than the previous slit mode.
Real time generation has been achieved for 4K full color rainbow hologram with normal PC. A line source approximation can accelerate computation speed 1.3 to 2.6 times faster than the previous result, depending on object points. In the approximation, each point in the object is converted to truncated line source. It makes 2D hologram calculation to 1D and calculation speed is increased. Although the rainbow hologram sacrifices vertical parallax, it can be generated faster than image hologram and full color image can be reconstructed with single SLM. Experimental results show that holograms are generated and displayed about 50 frames per second with 140,000 points and full color reconstructed images are observed.
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