最近的技术蓬勃发展，以下通过在强磁场，从而影响PET图像分辨率和衰减校正领域的改变正电子的运动技术障碍。
The technology recently blossomed following passing a technical hurdle of altered positron movement in strong magnetic field thus affecting the resolution of PET images and attenuation correction.
通过实验获得了声相位图与声幅度图，并通过数字图像处理获得了相应的速度图与衰减图。
After processing the amplitude image and phase image which was come from experiment we obtain the distribution of the velocity and attenuation.
射线穿过物体的衰减是非线性的，经过影像系统得到的图像灰度与物体厚度是非线性的关系；
The attenuation of X-ray through the object is non-linear and the gray level of image is non-linear response of object thickness.
在TGS透射测量中，线性衰减系数值的图像重建问题是TGS的难点和核心问题。
The image reconstruction problem of linear attenuation coefficients is very difficult and central in transmission TGS.
方法对163例脑梗死患者的常规mri、液体衰减翻转恢复(FLAIR)及DWI图像进行比较研究分析。
Methods 163 cases with cerebral infarction were analyzed in this study in regular MRI FLAIR and DWI imaging.
雾滴的散射通过三个方面对图像产生影响：雾滴对成像光线的透射衰减，空气光即非成像光线的散射及雾滴的多次散射。
The scattering of fog particle influence the images by three aspects: the attenuation of object light, the scattering of air light and the multi-scattering of fog particle.
分析衰减常数、增益系数和空间常数对图像增强处理的影响。
The effect of passive decay rate constant gain coefficient and space surround constant were analyzed.
靶组织体积的计算受PET图像采集模式，散射校正方法，衰减校正方法，重建技术，图像显示模式，正电子药物等因素影响。
Many factors work on the target volume calculation, such as PET image acquisition mode, scatter correction, attenuation correction, reconstruction method, image display mode, positron pharmacy.
本文基于反射衰减法提出一种新的直接对B超图像进行处理得到温度的监测方法，无须增加其他附加设备。
This paper proposed a new monitoring method based on reflection attenuation, which computes temperatures directly from the B-ultrasonic images and needs no more other equipments.
为抑制计算机层析造影（CT）系统重建图像中出现的金属伪影，提高图像的质量，采用一种基于金属投影非线性权重衰减的方法进行校正。
A metal artifacts reduction method using nonlinear weights was developed to suppress metal artifacts in X-ray CT(computerized tomography) images to improve the image quality.
整个装置包括光束衰减器、单脉冲选取及脉冲同步、光束直径匹配、CCD摄像机、图像卡、计算机及监示器以及系统软件。
The system includeS beam attenuator, single pulse selection and pulse synchronizing, beam matching, CCD Camera, frame grabber hard, monitor, computer and system software.
由于户外图像的退化与大气状况密不可分，分析了光在传输的过程中发生散射和衰减的物理过程。
As the outdoor atmospheric conditions and the degradation of the image are inseparable, analysis of light transmission occurs during the physical process of scattering and attenuation.
根据射线穿过不同密度的物质产生的衰减不同，可以重建出物体的CT图像。
Ct image of an object can be reconstructed according to the theory that attenuation of X-ray emerges when it passes through objects with different density.
这种方法在对角线方向上的频率响应特性较好，而在水平和垂直方向上对基带外的垂直频谱衰减不够，导致放大图像中的方块效应。
But there is Mosaic impact in the enlarged picture because this method can't adequately attenuate the vertical frequency off the Base Band in the horizontal and vertical direction.
针对雾化条件下拍摄到的退化图像，基于大气衰减机制和信息论中的最小失真理论，提出了一种新的图像复原最优化的高效算法。
A new efficient optimal restoration algorithm for foggy images was proposed based on both degrade mechanisms and the minimum distortion rule in information theory.
结果高频背向散射系数较声速、声衰减更能反映组织结构的变化，高频超声图像具有高的分辨率。
Results Compared with sound velocity and attenuation, the backscatter coefficient could reflect the structural change of biological tissue. The high frequency ul…
介绍了模拟港口岸形、物标回波和其他助航物标回波的生成，雷达回波的干扰、遮挡和衰减，固定距标圈、电子方位线和活动距标圈的显隐与图像的有关裁剪算法等。
Also the details about the coast, target and other navigational subjects echo and the interference of echo and Ring, Ebl, Vrm of Radar and clipping algorithm etc.
介绍了模拟港口岸形、物标回波和其他助航物标回波的生成，雷达回波的干扰、遮挡和衰减，固定距标圈、电子方位线和活动距标圈的显隐与图像的有关裁剪算法等。
Also the details about the coast, target and other navigational subjects echo and the interference of echo and Ring, Ebl, Vrm of Radar and clipping algorithm etc.
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