【摘要】 针对多媒体教学中,图像信息因距离等因素而不能清晰地获取数据且不能对教师的授课内容进行自动接收存储问题,将嵌入式处理器与图像采集模块及WiFi(Wireless Fidelity)相结合,并引入了JPEG(Joint Photo-graphic Experts Group)硬件编解码及PP(Post Processor)支持图像缩放及格式转换技术,设计了基于JPEG硬编码的嵌入式无线图像传输处理终端。给出了整体方案,并进行了编程调试,验证了系统的整体架构、通信协议及核心算法的可行性与完备性。通过实验证明,学生端能自动接收显示并存储教师端广播的图像数据,提高了学习效率,实现了终端之间图像信息的交互。终端之间连接实时高效、图像数据的采集压缩显示速度及无线模块的传输速度达到了预期效果。更多还原

【Abstract】 In modern multimedia teaching system,the students just obtain image information through the big screen’s slider,but due to the factors such as distance,they can’t get the data clearly and store the content of the teacher’s lecture automatically,in order to meet this demand,the embedded processor,image acquisition module and WiFi have been combined,the JPEG(Joint Photographic Experts Group) hardware encoding and PP(Post Processor) supporting image scaling and format conversion technology have been introduced,the embedded wireless image transmission and processing system based on JPEG hardware encoding was designed.For the students,the image from teacher can be decoded,displayed and stored automatically improving the learning efficiency and realizing the image information interaction.Finally,in the Linux environment,the procedures of Ad-Hoc and self-communication were programmed to test the program,the experimental data verified the feasibility and completeness of the system architecture,network protocols,and the core algorithm.The connecting speed of the terminals was real-time and efficient,the speed of image acquisition,compression,display,and wireless transmission can reach the intelligent standards.更多还原