
全息攝影技術
A blind audio watermark embedding algorithm by a holographic technique was proposed.
提出了一種基于數字全息技術的盲音頻水印算法。
An information encryption method is proposed based on digital holographic technique and phase retrieve algorithm.
提出了一種基于數字全息技術和相位恢複算法的信息加密方法。
Methods for obtaining multiple fan out clock distribution using polarization holographic technique is also proposed.
文中還提出了用偏振全息術獲得多輸出端時鐘分布的方案。
A holographic technique is investigated for amplitude and phase distributions in the aperture of a phased array antenna by using near field measurements.
研究了一種利用近場測量技術全息成像相控陣天線口徑幅相的方法。
Plane waves are usually used as illumination beams during recording and reconstruction processes of the holographic technique for the measurement of particulates.
在測量微粒場的全息技術中,通常采用平面波系統進行記錄和再現。
Polarization holographic technique was adopted to fabricate the HOEs. 4 fan out clock distribution has been obtained in primary experiments.
初步實驗得到了可作為4輸出端時鐘分布的全息光學元件。
This paper presents a time-based multi-frame holographic technique, which has many important applications in the research work of the combustion process of I. C. engines.
本文介紹了一種對研究發動機燃燒過程有着重要應用價值的實驗技術一時間分幅全息技術。
This paper presents some experimental results of the instantaneous macro-speed of ***sel fuel spray and the micro-speed of droplets in a ***sel fuel spray by using double pulse holographic technique.
本文介紹利用雙脈沖激光全息術研究柴油機噴霧油束的宏觀運動瞬時速度和噴霧粒子的微觀運動速度。
A two-beam multi-exposure holographic technique for fabricating three-dimensional photonic crystals is proposed.
提出用雙光束幹涉多次曝光的方法實現三維結構光子晶體。
The velocity and flying angle of droplets in water sprays formed by different pressure atomizers were measured by laser holographic technique.
采用激光全息測量技術對兩種壓力式噴嘴的噴霧液滴速度進行了測量。實驗中測量了噴霧場不同區域的液滴速度分布。
The experimental work was carried by using the multi-frame high speed holographic technique.
實驗采用的是高速分幅激光全息技術。
Information encryption method based on digital holographic technique and phase retrieve algorithm is proposed.
本文提出了一種基于數字全息技術和相位恢複算法的信息加密方法。
In this motionless holographic technique, light is reflected, or emitted from a 3D object, propagates through a spatial light modulator (SLM), and is recorded by a digital camera.
在這一靜态全息技術中,光由三維物體反射或發射,在通過空間光調制器(SLM)後,用數碼相機記錄。
Based on polynomial-fitting defect feature extraction was proposed for composite materials bonding defects was tested by the laser holographic technique.
提出了一種基于函數拟合的全息檢測複合材料粘接缺陷特征提取方法,用于缺陷定量評估。
Liquid dispersion process with a sinusoidally vibrated jet was investigated. The course of deformation and breaking of liquid jet from the nozzle was recorded and stu***d via a holographic technique.
本文提供一種用激光全息照相術觀測液體射流破碎、分散曆程的方法、設備和實驗技術。
In this paper, pseudocolor encoding of 2-D holographic images with a one-step rainbow holographic technique is described.
介紹使用一步彩虹全息法進行二維圖象的假彩色編碼。
In this paper a study on the laser holographic interferometric technique for measuring the temperature field in combustion chamber is presented.
本文對用激光全息幹涉技術測量内燃機燃燒室内溫度場進行了研究。
Although the theory of holography is almost perfect, the practical holographic display technique is not even close to what we expect.
盡管全息顯示理論已基本趨于完善,但實用全息顯示與人們的期望還相差甚遠。
A new method to make color transmission hologram is proposed, and the color hologram is reconstructed by use piexlated holographic display technique, and some holograms have been made successfully.
提出一種透射型彩色全息圖的拍攝與再現技術,所再現的圖象可以突出物體的三維立體感和原有色彩。
This paper analyzes and investigates some main issues of practical process of the volume holographic storage technique.
本文針對體全息技術實用化過程中的主要問題進行了分析與研究。
Holographic interferometry technique plays a very important role in the temperature field measurement with its unique advantage, and is widely applied in the temperature field measurement.
分布式光纖測溫是一種用于實時測量空間溫度場分布的新興技術,由于它在測量分布式溫度上的獨特之處,該技術在油井溫度場測量有很好的應用前景。
This study is the first comprehensive and systemic to apply holographic interferometry technique to the study of Aero-optical experiments.
本文的研究是國内首次全面系統地将全息幹涉技術應用于氣動光學實驗研究。
The principle, experimental apparatus, optical system and results of applying laser holographic interferometry technique to visualize three-dimensional(3D) temperature field were presented.
介紹了實時激光全息幹涉技術應用于三維溫度場可視化的原理、實驗裝置與光路系統、實驗結果等。
At present, the holographic interferometry technique has been widely used in various fields, and this study in aero-optical effects is also becoming the scope of its application.
到現在,全息幹涉技術已經廣泛地應用在各個領域之中,本研究的氣動光學效應也正在成為它的應用範圍。
Digital holography is a new holographic imaging technique and has been applied in many fields.
數字全息術是一種新型的全息成像技術,具有廣泛的應用範圍。
Digital holography is a new holographic imaging technique and can be used as a fast, ****** and robust method, showing important advantages and promising prospect in microstructure testing.
數字全息術作為一種新型的全息成像技術,将光學全息術、固體攝像器件與數字圖像處理技術相結合,在微結構測量領域有着廣闊的應用前景。
全息技術(holographic technique)是一種基于光學幹涉和衍射原理的三維成像技術,能夠完整記錄并再現物體的振幅、相位和波長信息,形成具有立體感的圖像。該技術由物理學家丹尼斯·加博爾于1948年提出,并于1960年代激光器的發明後得到實際應用(來源:Encyclopædia Britannica)。
幹涉記錄與衍射再現
全息技術通過将物體反射的激光(物光)與參考激光束疊加形成幹涉條紋,記錄在感光介質上。再現時,用相同波長的光照射全息圖,通過衍射還原三維影像(來源:Optical Society of America)。
醫學成像與生物檢測
例如全息顯微鏡可觀察活體細胞的三維動态,提升疾病診斷精度。2023年《自然》子刊報道了基于全息技術的高分辨率血流成像系統(來源:Nature Photonics)。
數據存儲與安全防僞
全息存儲利用三維空間記錄數據,單張光盤容量可達TB級。此外,全息标籤被廣泛用于貨币、奢侈品防僞,如歐洲央行在歐元紙币中嵌入了全息安全線(來源:IEEE Xplore)。
“holographic technique”是由“holographic”(全息的)和“technique”(技術/方法)組成的術語,指基于全息原理實現三維成像或信息記錄的技術方法。以下是詳細解釋:
holographic technique是一種基于光學幹涉與衍射的三維成像方法,核心在于記錄和重建光波信息,目前主要應用于科研、精密制造和特定展示場景。
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