Dissertation > Excellent graduate degree dissertation topics show

Study on the Three-dimensional Display of Computer-generated Hologram

Author: WangPeng
Tutor: ZhangYaPing
School: Kunming University of Science and Technology
Course: Physical Electronics
Keywords: computer holography three-dimensional (3D) display Fresnel diffraction spatial light modulator (SLM) optoelectronic reconstruction
Type: Master's thesis
Year: 2013
Downloads: 22
Quote: 0
Read: Download Dissertation


With the rapid development of display technique, the traditional two-dimensional display technology has been unable to meet the requirements of people, and three-dimensional (3D) display technology has gradually become a new research topic. As a true3D display technology, holographic3D display has the advantages of viewing with the naked eye and providing wide color gamut and full depth cues. Computer-generated hologram (CGH) is a new holographic imaging technique, which simulates the physical process of holographic record by means of using a computer. Comparing to the traditional optical holography and digital holography, it has the advantages of low requirement on environment, flexible and repeatability. However, there are still some problems to impede the further development of CGH, some research works will expand the discussion in this paper, including3D CGH theories and algorithms, coding accelerating method of true3D large data volume object,3D display method of CGH based on Spatial Light Modulator (SLM). In order to prove the result of this paper, feasibility and practicality system and experiment method of the3D holographic display is established.Analyzed the coding method of CGH and got the scope of different methods. Based on the comprehensive analysis, this study chooses the flexible and easy coding method-Burch. In order to solve CGH fast encoding of3D object, this paper expounds the way of combing VC++and powerful computing capabilities of MATLAB, which is based on the technology of component object model (COM). This method increased processing speed of hologram encoding effectively, through different size data experiment. It shows the high reliability and practical applicability of the mixed programming. In addition, multi-angle CGH of the true3D object is computed and reconstructed digitally. Otherwise, the method of getting true-color3D CGH computing images is given.To further study on3D CGH display, digital micro-mirror device (DMD) as the spatial light modulator is used.3D object uses slice image replaced, which combining with the angular spectral method gets the relationships between parameters of DMD with the hologram. Then using the3D holographic coding methods, the CGH is got. With the numerical reconstruction and experiment can get well conclusion. The results demonstrate that the proposed approach is correct, which provides an effective way for3D display in practical application.In order to achieve the high quality hologram reconstruction, this paper expounds the principle and optical modulation characteristic of DMD. Based on the principle of holographic display on DMD, this paper analyzes the Fresnel Diffraction theory and grayscale modulation theory. A new method of grayscale-adjustment CGH is proposed. And numerical reconstruction results are given. The results demonstrate that holographic display effect has an apparent improvement with grayscale-adjustment. This conclusion is very useful to study computer generated hologram display based on DMD.The paper has a study on3D computer holography, including theories, algorithms, digital reconstruction and experimental demonstration and so on. Some works and conclusions in this paper are instructive and useful in CGH3D display system study based on SLM. And it can be used for reference in real-time display system of CGH for further study.

Related Dissertations

  1. The Fresnel hologram calculation method research,O438.1
  2. A Study of Digital Image Encrypting Fulfiled by Optical Computer-generated Hologram,TP309.7
  3. Design of Diffractive Optical Elements for Laser Beam Shaping,TH74
  4. Objects Reconstruction by Digital Holography,O438.1
  5. Research of Digital Holography Based on Partial Coherent Source of LED,O438.1
  6. LCOS -based video holographic display system,TN873
  7. Fractional Fourier Transform and Its Application,O438.2
  8. Semiconductor laser through the atmosphere random channel -dimensional real-time display and Research,TN249
  9. A Non-Linear Electro-Optical Driving Circuit for Spatial Light Modulator,TN761
  10. Study on the Key Techniques of Three-dimensional Display Based on Optoelectronic Holography,O438.1
  11. Study on the Fast Algorithm of Computer-Generate Hologram,O438.1
  12. Propagation Properties of Beams with Random Modulation,O437
  13. Research on Digital Holography based on DMD and Color Digital Holographic Technology,TP391.41
  14. Research on Channelized Tunable Optical Dispersion Compensator Based on Liquid Crystal on Silicon,TN929.1
  15. The Imaging and Focus Function of the Special Diffracton Screen,O436
  16. Studies on the Statistical Properties of the Speckles Produced by the Weak Scattering Screens and the Phase Vortex Formation and Their Evolutions in the Extremely Deep Fresnel Diffraction Region,O436
  17. The Theoretic and Experimental Studies about the Diffraction and Talbot Effect of Grating,O436
  18. Computer Generated Holography Using Conjugate Symmetric Extension and Hologram Watermarking,TP309
  19. Assembly and output tuning programmable light modulator based on solid-state dye lasers,TN248
  20. Study of Record and Reconstruction of Off-axis Digital Holography,O438.1

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Display Technology
© 2012 www.DissertationTopic.Net  Mobile