高效能彩色影像漸進傳輸研究與實作

Study and Implementation of High Effect Progressive Color Image Transmission

陳文儉(Wen-Jan Chen) ； 王秋祥(Qiu-Xiang Wang) ； 梁世昌(Shih-Chang Liang)

《科學與工程技術期刊》 6卷2期 (2010/06) Pp. 39-50

https://doi.org/10.7117/JSET.201006.0039

摘要

本論文提出一個彩色影像漸進傳輸原型，利用影像金字塔結構將原影像分割成多重解析度，接著將每一層影像資訊利用無失真壓縮加以編碼。此原型包含兩個部分伺服端與客戶端；在伺服端，提供小波編碼、色彩轉換、小波係數壓縮儲存與漸進傳輸功能。在客戶端，包含小波解碼、色彩轉換、接收與已傳送的小波係數合成，最後將已傳送影像合成，逐漸改善重建影像的品質。實驗結果顯示各層重建時間大概只需2~3 秒，本論文所開發的原型，可以投入商業應用中。

關鍵字

影像漸進傳輸 ； 小波轉換 ； 色彩轉換

並列摘要

In this paper, a prototype for the progressive transmission of a color image is presented. The original image is segmented into multiple-resolution images by a pyramid structure; then the information for each layer is coded by lossless compression. The prototype consists of a server and a client. The server provides wavelet transform, color transform, storage, compressed wavelet coefficients and progressive transmission. In the client portion, by inverse wavelet and color transforms, the received wavelet coefficients are used to build successively-improving reconstructions of the image. The experimental results indicated that the required reconstruction time for each level is only 2 to 3 seconds. The prototype developed in this research can be practically implemented in commercial applications.

並列關鍵字

progressive image transmission ； wavelet transform ； color transform