Furthermore, there are no references for many aerial images and it is feasible to evaluate image quality only by knowing the cause of degrading image quality.
有资料表明，在当前的技术状态下，只有预先了解引起图像降质的原因，对无参考图像进行质量判别才是可行的。
OBJECTIVE: To evaluate image quality of Multi-slice Spiral CT (MSCT) in the coronary artery imaging and the diagnostic accuracy in determining coronary lesions.
目的：评价多层螺旋ct冠状动脉成像效果以及在冠状动脉狭窄诊断中的应用价值。
Quantitative analysis of scan conditions was carried out by using ct scan optimization factor as a comprehensive index to evaluate image quality and patient dose.
本文用CT扫描“优化因子”作为图像质量、病人所受剂量的综合评价指标，实现了CT扫描条件优化的定量分析。
In order to evaluate the quality of fused image, the merit and defect of every fusion method, there must be a set of objective and overall evaluation indexes in theory.
为了评价融合影像质量和各种融合方法的优缺点，理论上必须具备一套客观的、全面的评价指标。
In the end, author studies some measures to evaluate jamming effects, and evaluates jamming effects quantitatively by detecting image quality index of SAR.
最后还探讨了干扰效果的评估手段和方法，并且通过检测合成孔径雷达的图像质量指标对干扰效果进行了定量评估。
A new criterion to evaluate quality of enhanced image was proposed.
并给出一种评价增强图像质量的准则。
A new method to evaluate halftoned image quality that depends on the visual perception characteristics.
一种基于视觉感知特征的半色调图像质量评价方法。
During the clinical study of different scanning MRI techniques, it is necessary to evaluate the image quality by measuring the signal noise ratio.
在临床上研究不同的MRI扫描技术时，必须要用信噪比这个参数来对图像的成像质量进行评价。
Objective to evaluate the imaging quality and utility of flat panel detector DSA through comparing and analysing the image of coronary arteriography in traditional DSA and flat panel DSA.
目的通过对平板探测器DSA系统与传统DSA系统冠状动脉造影图像质量进行比较和分析，评价平板dsa系统成像质量和临床应用。
Objective to evaluate the influence of heart rate on the image quality of coronary angiography by 64-slice computed tomography (MSCT).
目的评价患者的心率对64层螺旋ct冠状动脉成像时图像质量的影响。
Several satellite images are used to validate the method. This method provides a feasible way to evaluate the imaging quality and to evaluate the methods of improving image quality.
通过对实际图像加以验证和分析，为评估图像质量和评价图像质量改善方法提供了一种可行的方法。
A novel blind image quality assessment method based on property of HVS was proposed to evaluate the quality of noisy image.
文中针对含噪图像的质量评价，提出一种基于人眼视觉特性的盲图像质量评价算法。
Objective To evaluate the image characteristics and quality of MR plain scan with breath-holding in normal lungs.
目的评价正常肺磁共振屏气平扫的图像特征和质量。
Objective:To evaluate the image quality of lung spiral CT scanning in two different directions.
目的：对比分析两种不同方向的肺部螺旋CT扫描的图像质量。
Experimental results show that PSNR value can external evaluate through non-linear editing HD video's image quality. The result is consistent with theory analysis.
实验表明，PSNR的值可以客观地评价经过非编编辑后的高清视频的图像质量，与理论分析保持一致。
Objective a suit of means can be built to evaluate image parameters for the quality of MRI.
目的为了确保医用磁共振的影像质量，建立一套可以评估其主要参数的方法。
Subjective visual perception experiment was performed to evaluate the image quality for different videos at different frame rates.
采用主观视觉实验研究了不同帧率下不同视频图像内容的主观图像质量。
To study further the better suitable objective medical image quality assessment, we construct the medical image database used to evaluate the performance of new objective image assessment methods.
为了更进一步的研究适用于医学图像的客观质量评价方法，我们建立了一套用于质量评价的医学图像库。
Objective: To evaluate the effect of the tissue harmonic imaging (THI) on image quality and construction measurement.
目的：探讨组织谐波成像技术(THI)对图像质量及结构测量值的影响。
In this experiment, we want to evaluate the influence of feature combination to the quality of recovered high-resolution image when using the neighbor embedding algorithm.
在这个试验中，当我们使用邻域嵌入算法的时候，我们想要结合质量和特征点评估这种算法对高分辨图象的影响。
Objective To evaluate retrospective cine ECG-gated multislice CT (ECG-MSCT) scanning in reducing cardiac motion artifacts and in improving image quality of the lung.
目的评价回顾性电影法心电门控多层螺旋CT（ECG-MSCT）肺部扫描的作用。
The image uniformity is an important index to evaluate the quality of MRI image. It affect the the quality of the image and the clinical diagnostic value of the image.
图像均匀度是衡量磁共振图像的重要指标，它直接影响到图像质量的好坏以及图像的诊断价值。
To evaluate the quality of image enhancement, this thesis studied the evaluating method of image's contrast and entropy.
对增强图像的质量评价，本文研究了采用图像对比度和熵的评价方法。
Our experiments show that DSNR of different images in the same scene changes congruously with PSNR, thus can be used to evaluate the quality of decompressed images and image sequences.
实验证明，在相同场景中dsnr能较好地反映PSNR的变化，因而可以用于同一图象的不同压缩图象以及图象序列的评价。
Our experiments show that DSNR of different images in the same scene changes congruously with PSNR, thus can be used to evaluate the quality of decompressed images and image sequences.
实验证明，在相同场景中dsnr能较好地反映PSNR的变化，因而可以用于同一图象的不同压缩图象以及图象序列的评价。
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