The Design And Implementation Of Embedded Digital Camera's System Based On Component Technology

Cameras can only use the film recording image at the beginning while they are all-in-one machines now.They have experienced huge changes from monochrome to colorful and from analog to digital since 1950s.With the development of the embedded system,digital cameras have put more and more functions witch relied on post-processing in the past time into their systems.However,with the function of cameras being added and the speed of update increasing,the embedded system software of multimedia electronic products like digital cameras have become more and more complex and difficult to maintain.Therefore,how to avoid the "Software Crisis" appeared of digital cameras in software development and make digital camera products' development,maintenance and upgrades easier are becoming a problem to developer.Base on a camera giant real business requirement,this subject roots in the enterprise internal development project.In order to reduce module coupling degree,improve the reusability of code and enhance the extensibility and maintainability of the system,the function and principle of component technology in software development framework design have been discussed mainly in the thesis.And combined with the GStreamer multimedia framework,the user requirements?system requirements and non-functional requirements of the embedded digital camera's system has been analyzed and a system framework of the digital camera has been raised.And then,this thesis describes the components' design of the application layer of the framework.Based on that,the design and achievement of main function modules of the system in detail,including power on,record,play,thumbnail and interface have been introduced.At last,the system has been tested.Based on the test result,use of the embedded digital camera's system has been summarized.