激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2014年
11期
34-37
,共4页
图像重构%压缩感知%离散余弦变换%全息技术
圖像重構%壓縮感知%離散餘絃變換%全息技術
도상중구%압축감지%리산여현변환%전식기술
Image reconstruction%Compressive sensing%Discrete cosine transform%Holography technology
为了获得理想的图像重构效果，提出一种基于离散余弦变换和全息技术相融合的图像重构算法。首先采用离散余弦变换对图像进行分解保留少数的低频分量，从而构建压缩感知的稀疏基加快重构速度，然后采用全息技术对图像重构结果进行处理，提高图像重构效果，最后采用仿真实验测试算法的性能。实验结果表明，相对于当前经典图像重构算法，本文算法不仅提高了图像重构质量，而且加快了图像重构速度，具有较好的实际应用价值。
為瞭穫得理想的圖像重構效果，提齣一種基于離散餘絃變換和全息技術相融閤的圖像重構算法。首先採用離散餘絃變換對圖像進行分解保留少數的低頻分量，從而構建壓縮感知的稀疏基加快重構速度，然後採用全息技術對圖像重構結果進行處理，提高圖像重構效果，最後採用倣真實驗測試算法的性能。實驗結果錶明，相對于噹前經典圖像重構算法，本文算法不僅提高瞭圖像重構質量，而且加快瞭圖像重構速度，具有較好的實際應用價值。
위료획득이상적도상중구효과，제출일충기우리산여현변환화전식기술상융합적도상중구산법。수선채용리산여현변환대도상진행분해보류소수적저빈분량，종이구건압축감지적희소기가쾌중구속도，연후채용전식기술대도상중구결과진행처리，제고도상중구효과，최후채용방진실험측시산법적성능。실험결과표명，상대우당전경전도상중구산법，본문산법불부제고료도상중구질량，이차가쾌료도상중구속도，구유교호적실제응용개치。
In order to obtain reconstruction results of image, a novel algorithm of image reconstruction is pro-posed based on holography technology and discrete cosine transform. Firstly, image is decomposed by using discrete cosine transform to retain the low frequency component and construct sparse matrix of compressed sensing, acceler-ate the speed of reconstruction, and then holographic technology is used to treat the results of image to improve the image reconstruction results, finally the performance is tested by simulation experiment. The experimental results show that, compared with current classic image reconstruction algorithms, the proposed algorithm not only improves the reconstructed quality of image, but also accelerates the speed of image reconstruction, has the good practical ap-plication value.
