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- The LCD black-matrix effect on the reconstructed image of a CGH was analyzed through theoretical deducing. 通过理论推导,具体分析了LCD黑栅效应对全息再现像的影响;
- The result of simulation experiment shows that the reconstructed image is better than those traditional SVQ and VQ in PSNR and perception. 模拟实验结果表明 ,在相同的压缩比的情况下 ,信噪比要优于传统的矢量量化 (VQ)和子帧矢量量化 (SVQ) ,且重构图像的主客观效果良好
- Furthermore, for human visual perception, the scaling JND model is developed to optimize the reconstructed image quality. 因此,根据人眼感知的特性,我们提出来可支援缩放比例的JND模组来最佳化重建影像的品质。
- The simulation results show that the buffer fullness tend to be stabilized and the PSNR of the reconstructed image is raised. 仿真结果表明:该文提出的方法有效地平滑了缓冲器的输出,同时峰值信噪比也有所提高。
- The physical validity based lossy compression algorithms are usually accompanied with VOP structural distortion, leading to the degradation of the reconstructed image quality. 基于物理真实的有损压缩往往伴随有VOP结构形变,导致重构图像质量下降。
- Since each description included part or all information of the odd and even position coefficients, the reconstructed image from any single channel would have acceptable fidelity. 由于每个描述都包含了奇数位系数和偶数位系数的部分或全部信息,因此,接收到一个信道的信息就可以重建出一定质量的图像。
- OSEM has good reconstructed image quality and uses less computation time.Overrelaxation technique has adjustable relaxed parameters and speeded convergence function. 有序子集最大期望法(OSEM)具有较高的重建图像质量和较短的计算时间,超松弛因子(OR)有可灵活调节超松弛因子和加速收敛两种功效。
- From the reconstructed image and the original color similarity can be divided into caihong bolographic pseudo-color caihong bolographic caihong bolographic and true color. 从表示像与原物色彩之间的异同,彩虹残息又可不合为假不黑白彩虹残息和假不黑白彩虹残息两类。
- It has the advantage of fast implementation and enhances reconstructed image quality compared to JPEG2000 at the same bit rate in terms of both PSNR and the perceptual results. 此新方法具有快速处理之特性,同时也能达到相当高的压缩比,在同样压缩率下可以比新的静态影像压缩标准JPEG2000有较佳的讯号杂讯比。
- The results shows that under the same conditions the later can obtain a reconstructed image with its quality higher than that of the former(except for receiving all the desc... 仿真结果证明,后者比前者在相同的条件(除所有描述都接收的情况)下能得到质量更高的重构图像,提高了数据传输的鲁棒性。
- For unknown permittivity tomography target,the measured capacitances are normalized by simulated test.Simulation results show that the quality of reconstructed image satisfactory. 对于未知介电常数的成像对象;电容测量值采用仿真校验法进行归一化处理;仿真结果表明;可获得很好的重建图像质量.
- The selection of threshold will affect the quality of the reconstruction image. 其中阈值选取关系到图像重建的精确度。
- The characters of the fast Fourier transform of the free space impulse response are different at different distance, so the quality of the reconstructed image by the convolution isn't perfect. 自由空间脉冲响应的快速傅里叶变换在不同的记录距离性质不同,由瑞利-索末菲衍射积分利用卷积方法得到的再现像质不理想;
- According to wavelet coefficients energy distribution in different subbands,different thresholds are obtained in different subbands to improve reconstructed image quality significantly. 将该阈值方法和多小波变换相结合,根据多小波分解后的能量分布特性,在不同尺度的子带选择不同的最佳阈值,有效地提高了重构图像质量。
- In this paper,Based on diffracted wave diffusion theory another analysis method about the condition keeping reconstructed image separat e from backdrop light for off-axis hologram is given. 本文从衍射波扩散出发,提出了另一种分析离轴型全息图再现象与背景光分离条件的方法。
- A method of estimation of motion parameter error based on the quality of reconstructed image is suggested.That area error and contour transition-turn error is used to be quality criteria. 提出用重建的图像的质量来估价运动参数误差,并给出了误差面积和轮廓转折率误差二个函数。
- Constellation reconstructs images as starlike points of light. 星座 重建图像作为光的星形的点。
- The background noise of the reconstructed image is resulted from the nonnegative coded function.A method of constructing composite hologram for reducing the background noise is proposed. 对于编码函数非负给物体的再现像带来的背景噪音,提出采用构造复合全息图的方法来消除。
- The qualities of reconstructed images from single amplitude hologram, single kinoform, and kinoform sequence calculated by M-FrFT are compared. 将该相息图序列的再现像进行叠加,以抑制再现像的散斑噪声。
- The axial source images, SSD and MIP reconstructed images of the CTA were reviewed and correlated with surgical findings. 在电脑断层血管摄影影像中,我们将床突上部内颈动脉血管瘤与后交通动脉之关系分为四种类型。