The reconstructed image quality of electrical capacitance tomography ( ECT) system is heavily affected by the ill-posedness problem, so the condition number of the sensitivity matrix must be decreased. 电容层析成像(ECT)系统的不适定性问题严重影响重建图像质量,为此必须减小灵敏度矩阵的条件数。
The visual field of the reconstructed image is extended and is not limited by the aperture of the lens. 这个全息图重现像的观察范围很宽,视场不受透镜孔径的限制。
Usually the reconstructed image is located on a planar plane when the Fourier hologram is illuminated by a plane wave. 当用平面波照射傅里叶全息图时,所重现的图像一般显示在平面上。
Conclusion We must bring together extensive factors in order to produce the best reconstructed image. 结论要想获得最佳的图像效果,必须综合多方面的因素来进行处理。
Experimental results show the optical re-constructed image and numerical reconstructed image are similarity, thus the accuracy of phase modulation characteristics is verified. 实验结果表明,光学再现像与数值模拟结果相吻合,从而验证了纯相位调制特性测量的准确性。
Bronchial and vascular appearance change of SPN in the reconstructed image and the correlation with pathology 孤立性肺结节重建图像血管支气管形态学改变与病理学相关性研究
The results provide useful information about the relationship between the off-axis angle and the quality of the reconstructed image. 实验结果提供了关于离轴角与重构图像质量之间的关系的有用信息。
Factors Analyse Based on MTF About Effecting Super Resolution Reconstructed Image 基于MTF的影响超分辨率图像重建效果的因素分析
The reconstructed image will be out of clarity if the practical projections are used directly. 如果直接利用实际扫描所得投影数据进行图像重建,得到的图像不清晰。
Blocking artifact is evident in the reconstructed image especially when the compression ratio is high. A new adaptive de-blocking algorithm on spatial domain is proposed. 块效应在低比特率图像中极为明显,提出一种基于方块方向活动性的自适应空域去块效应算法。
The quality of the reconstructed image directly calculated from the recorded hologram is unsatisfactory because of the presence of the zero-order diffraction and the speckle noise. 由于对该全息图直接计算得到的重构像,受零级衍射光斑和散斑噪声的影响较大,使得重构像质量难以令人满意。
Synthetic Aperture Focusing Technique ( SAFT) can focus effectively to reflected waves, and improve the reconstructed image's resolution through rough B-scan method. 合成孔径聚焦技术(SAFT)能够对反射信号进行有效聚焦,提高图像分辨力。
The resolution and visibility of the reconstructed image are discussed, and the relationship between resolution and visibility is analyzed. 对重构图像的分辨率和可视度进行了讨论,并对两者之间的关系进行了研究。
The result shows error resilience technologies can remarkably improve the subjective and objective quality of the reconstructed image. 结果表明,在应用了差错复原技术后,重建图象的主客观质量均得到了明显的改善。
Using the equipotential line back-projection algorithm and threshold method, the author reconstructed image correctly, simply and quickly. 用等位线反投影算法和阈值化的图象处理方法进行图象重构,简单、快捷地重构出图象,定位准确。
Sub-image information of the wavelet decomposed finger print image is essential to the quality of reconstructed image. 图象小波分解后,各子图信息对图象恢复的质量有很大的影响。
Using the space benchmark parameters, the sampling of variable row frequency and reconstructed image were listed. 利用空间基准参量,通过计算机仿真给出了变行频采样示意图和重建图像。
Experimental results indicate that this algorithm improves the quality of reconstructed image. 实验结果表明,该算法可较大提高图像重构质量。
In this paper the formulas of magnification and reconstructed image of a hologram are calculated by a simple method. 本文提出了用简单的方法计算全息照相的放大率及重现像的表达式。
The experiments shows better visual quality of reconstructed image, compared with traditional single wavelet image coding algorithm. 实验结果表明,与采用单一小波图像编码算法相比,本文算法能够获得更好的图像恢复质量。
The main analysis was that, for a certain CCD and the recording wavelength, the transfer function was influenced by the recording distance, and the reconstructed image quality was also investigated. 主要分析了对一给定的CCD和记录波长,记录距离对传递函数的影响,进而分析了对再现像像质的影响。
By using Fresnel diffraction and holographic theory, some detailed analysis of the recording, numerical reconstructing method and the characters of the reconstructed image about lensless Fourier digital holography and phase-shifting digital holography is given. 应用菲涅耳衍射和全息理论,详细分析了无透镜傅里叶变换数字全息图的记录、再现方法和再现像的特点,分析了相移数字全息图的记录和再现方法,并进行了相应的实验验证。
The relationship between the parameters of the integral imaging display system and the quality of the reconstructed image is obtained. 得到了集成成像三维显示系统参数和再现像品质之间的关系。
Experiment showed that this new method can improve the speed of coding as well as the quality of the reconstructed image. 实验表明该方法不仅提高了编码速度,同时改善了重构图像的质量。
The method improves the reconstructed image quality considerably compared to the case when saliency information is not used. 与不使用显著性信息时的情况相比,该方法能够明显提高重构图像的质量。
This method is also a fully reconstructed image demodulation algorithm. 该方法还是一种完全重构的图像解调算法。
Compared with the scheme proposed in literature, experiments shows our scheme has the better reconstructed image effect. 实验表明,相比文献中的方案,本方案得到了更好的重构图像效果。
Most image reconstruction algorithms are not high accuracy of the reconstructed image exists shortcomings. 大多数图像重建算法都存在重建图像精度不高的缺点。
Sparsity of the target and the sampling rate on the reconstructed image quality also has been analyzed. 并对目标物体稀疏性和采样率对图像恢复质量的影响进行了分析。
Medical imaging requires high compression rate while the reconstructed image has better rate-distortion. 医学影像压缩不仅要求效率高,同时要求其重建图像的率失真性好,因此对医学影像压缩技术的研究有重要的现实意义。