彩色電子紙之半色調影像處理晶片設計

Abstract

本論文探討彩色電子紙在應用半色調影像處理演算法上所遇到的兩個難題，第一個是電子紙平台使用低功耗微控制器難以實現即時影像處理，第二個問題是直接二進制搜尋演算法在減少影片播放時畫面閃爍方面取得了良好效果，但其時間複雜度仍然很高，這使得在現有的電子紙平台上實現該演算法仍然存在困難。為了解決這一問題，本論文提出了一種基於彩色電子紙半色調影像處理的平行化硬體架構，以及一種新的像素搜索次序矩陣。該硬體架構具有良好的自適應性和可擴展性，可以自由地擴展或減少平行化的模塊，以滿足不同系統的需求。此外，該硬體架構已在晶片平台上實現，實驗結果表明該架構可以高效地執行即時影像處理，同時保持影像品質。This thesis addresses two issues encountered in the application of halftone image processing algorithms on color e-paper. The first challenge is that on e-paper platforms, it is difficult to achieve real-time image processing using low-power microcontrollers. The second issue is its time complexity remains high, making it still challenging to implement this algorithm on existing e-paper platforms. To tackle these problems, this thesis proposes a parallelized hardware architecture for halftone image processing on color e-paper, along with a novel pixel search order matrix. This hardware architecture exhibits excellent adaptability and scalability, allowing for flexible expansion or reduction of parallelized modules to meet the equirements of different systems. Furthermore, the proposed hardware architecture has been implemented on a chip platform, and experimental results demonstrate its efficient execution of real-time image processing while maintaining image quality.