彩色電子紙廣告看板的資料壓縮方法

Abstract

本文探討了多粒子彩色電子紙廣告看板的資料壓縮方法。隨著電子廣告看板尺寸的擴大，儲存顯示影像所需的緩衝記憶體和閃存容量也隨之增加。由於彩色電子紙具有特定的顯示機制，目前的影像壓縮方法並不完全適用於這種應用。因此，本文提出了一種高效的彩色電子紙圖像壓縮方法，此方法具有簡單的解壓縮機制，能顯著降低設備端解壓縮晶片的成本。同時，在保持影像品質的前提下，儲存影像所需的記憶體空間也得到了顯著減少。解壓縮功能已在FPGA上完成驗證，結果顯示其效能與使用多核心CPU的電腦計算結果相近。

This paper discusses memory issues for advertising billboards with multi-pigment color electronic paper (e-paper). Enlarging the size of the electronic billboards increases the size of the memory buffer and flash memory used to store display content. Due to the specific display mechanism of the color e-paper, currently available image compression methods are not suitable for this specific application. An efficient image compression method for color e-paper with a low-cost decompression mechanism is presented in the paper. The display quality is good enough, and the total image buffer size could be significantly reduced. The decompression process has been verified on an FPGA, and its performance and processing results are similar to those obtained using a computer with a multi-core CPU.