基于ATmega128的LED屏图像数据解码设计  

Design of Decoding for LED Display′s Image Data Based on ATmega128

作　　者：杜小伟[1] 谢桂泉[1] 周展怀[2] 潘永雄[2] 

机构地区：[1]华南理工大学,广东广州510641 [2]广东工业大学,广东广州510006

出　　处：《现代电子技术》2009年第2期192-194,共3页Modern Electronics Technique

摘　　要：针对目前对全彩LED显示屏图像数据的处理需依赖计算机的情况,提出利用ATmega128单片机实现JPEG图像解码的方法,并利用此方法实现了通过GPRS网络对全彩LED显示屏图像数据的远程传输。针对ATmega128的资源和性能特点,对JPEG解码进行了可行性分析。重点论述Huff man解码、IDCT解码和图像缩放的优化算法在ATmega128单片机上的实现。由于图像的处理在单片机上实现,降低了产品的成本,具有较强地生产实用性。According to the situation that at present the image data＇s processing of the full--color LED display relyes on the computer,this paper proposes a solution of using ATmega128 chip to realize the purpose of decoding JPEG image. By using the solution,images in full - color LED＇s display can be changed through the GPRS networks. Feasibility analysis of J PEG decode is given according to the resources and characteristics of ATmega128. The article emphasizes the realization of Huffman decode, IDCT decode and image scaling on ATmega128. Because image processing is achieved in microcontroller, which reduces the cost of products and have strong production practicality.

关 键 词：ATMEGA128 JPEG解码 Huffman解码 IDCT解码 全彩LED显示屏 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]