Vision is the main way for humans to obtain information, while display is the main means of providing visual materials for people. The application of modern electronics and optical materials in display systems by humans can be traced back to the invention of cathode ray tubes (CRTs) in 1896. In just over 110 years, electronic display technology has gone through important stages of development, from black and white to color, from analog to digital, from small scales to large screens, and from boxes to flat panels.
The resolution of displaying image details is constantly improved, the sense of presence is constantly enhanced, and the visual enjoyment brought by displaying images is becoming more scientific and aesthetic. At the Consumer Electronics Show in Las Vegas, USA in 2007, the largest TV had a size of 108 inches, the highest physical resolution was 2560 * 1440, and the thinnest electronic paper display was less than 1 inch. One important direction of current display technology development is three-dimensional scale stereoscopic display.
This display mechanism is closer to objective reality, and its implementation relies on a deeper analysis and understanding of human visual sensory functions, as well as the exploration and application of updated image processing technologies. This article proposes a new method for constructing a free stereo display system based on a single chip DMD, and constructs a new free stereo display system based on a single chip DMD.
The main research work and innovative achievements of the paper mainly include the following aspects:
1. Independently designed the DLP projection display system based on the physical characteristics of optical devices and signal processing methods;
2. Proposed and implemented a free (naked) stereoscopic display system based on binocular parallax principle and single chip DMD structure;
3. In the optical path control system of disparity images, a frame separation method and its device that is conducive to disparity image fusion are proposed, which can not only achieve 2D/3D display of images, but also adjust the depth of field of stereo images.
4. In the design of optical driving circuits, a special reflective driving design is adopted. The loss of optical power and display resolution is reduced, and the efficiency is doubled compared to conventional liquid crystal grating driving methods.
5. We have studied the theoretical and transformation algorithms for implementing 3D digital video images on DLP systems. Through system simulation and testing, the free stereo display system based on single chip DMD designed and implemented in this article has achieved preliminary demonstration effects. At the end of the paper, the shortcomings of the system were analyzed, and further research directions were discussed.