Based Multi-window Management, Multi-projection Display System

With rapid development of science and technology and explosion of information, user requirements of display technology are also getting higher and higher, especially in fields of large-scale information visualization, virtual reality and emulation,digital cinema, exhibition industry, conference and education,etc.And main requirements are on high resolution, large display area and deep immersion. Due to the limitations of display size and computing resource, single channel is hard to meet the requirements of massive information visualization, so using several projectors to construct multi-projector display system is becoming much more popular.Current multi-projector display systems can be divided into two categories in terms of their realization manner:the hardware manner and the software manner. Professional hardware products have powerful processing ability, and they are very flexible.However, they are designed for only one application, and they are very expensive.Multi-projector display systems developed by research teams both home and abroad are realized in software manner. They provide a rich set of features, e.g., geometry and color calibration, edge blending, remote control and only use non-professional hardwares.In contrast to hardware realization,software realization can provide more features at a relatively lower price.Currently, the limitations of hardware realization are:for non-overlapped VGA analog signals, existing systems don't support high-quality color calibration to solve chrominance variation and luminance nonuniformity; existing systems don't support flexible profile management for multiple applications and cannot switch among them at runtime; when there are many input signals, and for each input signal, there are a number of windows, existing systems don't support task-oriented multi-window management.This thesis provided a system called multi-window-management-based multi-projector display system.In contrast to existing display systems based on professional hardwares, the advantages are:●Provide system features in software realization manner with good scalability. Due to the using of non-professional hardwares, the cost is relatively lower than professional hardware products.●Provide a large set of signal processing modules, which can be combined with each other freely into pipelines with different processing functions. What's more, support flexible profile management for processing parameters.For each type of signal, support multiple parameter profiles and runtime switching among them.●Provide desktop manager and taskbar similar with Windows. So that users can easily manage complex windows layout by interacting with the interface. Support profile management for multiple applications, and can switch application profiles at runtime.Experiment results and practical applications have shown that our system can capture various signals in real time, and reach real-time rendering for most applications.And task-oriented multi-window remote controller simplifies user interactions, making system easier to use.