激光技术
激光技術
격광기술
LASER TECHNOLOGY
2014年
6期
859-862
,共4页
宋修法%于梦杰%王华英%刘佐强%高亚飞%刘飞飞
宋脩法%于夢傑%王華英%劉佐彊%高亞飛%劉飛飛
송수법%우몽걸%왕화영%류좌강%고아비%류비비
全息%线性重建%参考光强度%同态信号处理
全息%線性重建%參攷光彊度%同態信號處理
전식%선성중건%삼고광강도%동태신호처리
holography%linear reconstructing%reference light intensity%homomorphic signal processing
为了提高数字全息显微中的重建精度及速率,采用理论分析与实验验证相结合的方法,对数字全息显微中基于同态信号处理的广义线性重建算法进行了理论分析,比较了同一物场在不同物光与参考光强比条件下的实验结果。结果表明,随着参考光与物光光强比的不断增大,广义线性重建算法再现像质得到明显改善,但当这一比值增大到一定值时,再现像质量则逐渐下降。寻找合适的物光、参考光光强比,是利用数字全息广义线性重建算法实现高质量再现像的重要条件。
為瞭提高數字全息顯微中的重建精度及速率,採用理論分析與實驗驗證相結閤的方法,對數字全息顯微中基于同態信號處理的廣義線性重建算法進行瞭理論分析,比較瞭同一物場在不同物光與參攷光彊比條件下的實驗結果。結果錶明,隨著參攷光與物光光彊比的不斷增大,廣義線性重建算法再現像質得到明顯改善,但噹這一比值增大到一定值時,再現像質量則逐漸下降。尋找閤適的物光、參攷光光彊比,是利用數字全息廣義線性重建算法實現高質量再現像的重要條件。
위료제고수자전식현미중적중건정도급속솔,채용이론분석여실험험증상결합적방법,대수자전식현미중기우동태신호처리적엄의선성중건산법진행료이론분석,비교료동일물장재불동물광여삼고광강비조건하적실험결과。결과표명,수착삼고광여물광광강비적불단증대,엄의선성중건산법재현상질득도명현개선,단당저일비치증대도일정치시,재현상질량칙축점하강。심조합괄적물광、삼고광광강비,시이용수자전식엄의선성중건산법실현고질량재현상적중요조건。
In order to improve the accuracy and speed of image reconstruction , the generalized linear reconstructing algorithm based on homomorphic signal processing was analyzed by combining theoretical analysis and experimental verification in the digital holographic microscopy .The experimental results of the same field under different reference intensity ratio to object were compared .The results show that: with the increase of the intensity ratio , the reconstruction image quality of the generalized linear reconstructed algorithm is improved obviously .However, the reconstructed image quality decreases when the ratio increases to a certain value .Finding an appropriate ratio is important for obtaining high quality reconstructed images for the generalized linear reconstruction algorithm in digital holography .