光聲壓縮感知顯微影像系統改善與以加熱樣品提升光聲訊號強度之研究

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/92260

Title:	光聲壓縮感知顯微影像系統改善與以加熱樣品提升光聲訊號強度之研究
Authors:	王奕辰;Wang, Yi-Chen
Contributors:	光電科學與工程學系
Keywords:	光聲效應;顯微影像系統;壓縮感知;訊雜比;鬼影成像;photoacoustic effect;microscopy;compressive sensing;SNR;Ghost imaging
Date:	2022-12-14
Issue Date:	2024-09-19 15:43:11 (UTC+8)
Publisher:	國立中央大學
Abstract:	本文闡述如何以光聲量測系統為基礎建立由微型鏡片陣列裝置(DMD)作為架構主要核心的光聲壓縮感知鬼影成像系統，並針對DMD微鏡片結構造成的能量丟失導致的光聲量測低訊雜比問題提出解決方案。首先藉由光聲效應與溫度的關聯設計實驗，並透過分析實驗結果配合熱傳方程式與光致聲波方程式的學理證實熱致光聲增強現象可以應用於提升光聲訊號訊雜比。隨後透過調整系統相關軟硬體，有效改良並簡化光聲壓縮感知鬼影成像系統的還原流程，最後證實雷射作為非接觸式熱源與光聲壓縮感知鬼影成像系統結合可以成功重建光聲影像。;A photoacoustic compressive sensing ghost imaging system based on the photoacoustic measurement system with a digital micro-mirror array device (DMD) is proposed and realized. To overcome the bottleneck in low signal-to-noise ratio, the solution based on the thermo-induced photoacoustic enhancement effect has been introduced. By adjusting the relevant software and hardware of the system, the restoration process of the photoacoustic compressed sensing ghost imaging system was effectively improved and simplified. Finally, it was confirmed that the combination of the laser as a non-invasive heat source and the photoacoustic compressed sensing ghost imaging system can successfully reconstruct the photoacoustic image.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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