無線傳輸之影像擷取與顯示

Image Capture and Display of Wireless Tansmission

王大仁(Ta Jen Wang)

指導教授 ： 黃英哲

元智大學/工程學院/電機工程學系/碩士(2004年)

摘要

無線傳輸之影像擷取與顯示
學生 : 王大仁 指導教授 : 黃英哲博士
元 智 大 學電機工程研究所
中文摘要
本文目的在實現無線傳輸之影像擷取與顯示，無線動態影像即時傳輸對於未來無線通訊的應用有相當大的應用面，而無線影像即時傳輸主要受限於，影像資料大小與資料傳輸無線的頻寬。因此本文主要針對影像資料壓縮與影像即時處理及無線頻寬大小著手，在影像壓縮與解壓縮方面使用ADV611單晶片，此晶片主要壓縮解壓縮方法為使用小波轉換方式，小波轉換方式對於動態影像壓縮具有良好效果，在影像處理方面使用ADSP-2185數位訊號處理器，作為壓縮資料讀取及與無線通訊模組資料傳送之間通訊協定處理，而在無線通模組方面，使用2.4GHz 無線通訊模組，此無線通訊模組對於資料傳送使跳頻模式，這對於資料保密性具有很好效果，此模組資料傳輸頻寬為雙向115.2kbps。
整體動作流程為，CCD攝影機作影像擷取，經由ADV611作資料壓縮，經由ADSP-2185將壓縮後資料透過無線通訊模組，將壓縮後資料傳送至遠端無線通訊模組作壓縮資料接收，而ADSP-2185再將壓縮後資料透過ADV611作資料解壓縮顯示。

關鍵字

影像擷取 ； 影像顯示 ； 小波轉換

並列摘要

Image Capture and Display of Wireless Tansmission
Student: Ta Jen Wang Advisor: Dr. Ying J. Huang
Institute of Electrical Engineering
Yuan-Ze University
Abstract
The purpose of this paper is to discuss the taking and displaying of images for wireless transportation. The real time transportation of wireless dynamic images has a wide range of applications for future wireless telecommunication. The major limitations of the operation are: the size of data to be transported and the wireless bandwidth available for transporting the intended data. Therefore, this paper will focus on techniques of images data compression, real time processing of images and/or picture, and the size of wireless bandwidth. For images compression and decompression, we used ADV611single chip. This chip utilizes Small Wave Conversion technology to handle data compression and decompression. Small Wave Conversion is suitable for dynamic images compression. For images processing, we used ADSP-2185 Digital Signal Processor for retrieving compressed data and protocol processing between modules dealing with wireless telecommunication data transport. For the wireless telecommunication module itself, we used a 2.4GHz wireless telecommunication module. This module uses frequency jumping mode for transporting data and is great for data security. The data transmission bandwidth we used is 115.2kbps bi-directional.
The complete operation process is as following:
The image is first got via a CCD camera through adopting the ADV611performs data compression tasks. And the ADSP-2185 wireless telecommunication module will then transport the data to the far end. At the far end, the wireless telecommunication module receives the compressed data. Finally, after the ADV611 decompresses received data, the ADSP-2185 will display the original images.

並列關鍵字

image capture ； image display ； wavelet

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