The contrast detection thresholds of the Chinese were measured for monocular and binocular viewing, and the satisfactory results are obtained.
测定了中国人单眼和双眼的对比察觉阈值，取得了满意的实验结果。
"Our study shows that contrast against the background, rather than color per se, may be more important for object detection by sharks," study co-author Hart said in a statement.
“我们的研究显示，与背景色之间的差别，而不是颜色本身，才是鲨鱼探测目标的更重要依据。”研究者之一哈特在一份声明中说。
By contrast, 14% of those with two functional copies of the gene were over the detection threshold before they had even received an injection.
相反，携带该基因的两种活跃副本的人中，14%的人在注射前就已经显示超过检测标准。
In the Region of the Americas, by contrast, smear-positive detection rates were typically higher than the detection rates of all TB cases.
但是在美洲区域，痰检阳性检出比率却高于所有结核病例的检出率。
This paper investigates the approach to estimate the maximum detection range of an infrared point_target against sky background based on the minimum resolved contrast(MRC)criteria.
基于最小分辨对比度准则，研究了天空背景下红外点目标的最大探测距离估计方法。
Physical studies of the eyes and retinas of fish show that the majority can obtain a clearly focused image, detect motion, and have good contrast-detection ability.
物理研究鱼的眼睛和视网膜显示大多数鱼能获得清晰对焦的图像，侦测动作，并具有良好的反差度检测能力。
Detection of small target with low contrast and the research for tracking algorithm is one of the key techniques in TV tracking field.
低对比度小目标检测与跟踪算法的研究是电视跟踪领域的关键技术之一。
The operating range for extended target is calculated by considering of the target finding ability of eyes, contrast of target luminance, discrimination level and detection probability.
并综合考虑人眼的目标发现能力、目标的亮度对比度、观察等级和探测概率的要求，计算出面源目标的作用距离。
Based on the contrast between laser and background intensity, warning is carried out through laser target detection algorithm.
利用激光和背景强度之间的反差，通过激光目标检测算法进行告警。
The target detection reduces the noise, enhances the image's contrast, and extrudes the target from background through making sure of tracking region and dividing target.
其目标检测通过确定跟踪区域、分割目标等步骤先减少噪声影响，使图像对比度增强，把目标从背景中突显出来。
The tracking and detection of tiny aerial target in real-time image sequence are based on contrast tracking algorithm.
实时图像序列空中微小目标的检测和跟踪，采用基于对比度跟踪算法。
Through the contrast test, the author discovered that no obvious difference could be found in determining COD by using both methods of instrumental detection and dichromate process.
通过对比测试，结果发现使用自动检测仪器方法与使用重铬酸盐法测定不同水样的COD值时，两者没有显著性差异。
Face Detection automatically detects a face in the frame and adjusts focus, exposure, contrast, and skin complexion on it so it always turns out beautifully.
人脸检测自动检测框架脸和调整焦距，曝光，对比度，肤色和皮肤上，所以看起来，往往都是美丽的。
Contrast the pathological change and biochemical indicator detection condition in rat lung tissue circa medicine intervention, decision the curative effect.
对比药物干预前后大鼠肺组织的病理变化情况及生化指标的检测情况，判断疗效。
Analytic method was used to build up a target searching model for the attacker, and the effect of contrast and visible distance on detection probability was analyzed.
采用解析法建立了攻击机目标搜索模型；分析了对比度和能见距离对发现概率的影响。
Coronary calcium is detected by ct scanning, a noninvasive procedure that, for calcium detection, does not require injected contrast.
冠状动脉钙量是通过CT扫描检测的，这种无创方法检测钙时不需要注射造影剂。
Transmission and reflection method reaches the sensitivity of phase contrast microscope observation method and it can be used in on-line detection.
透射反射扫描法的研究发现，其灵敏度达到了相衬显微镜的灵敏度，可实现在线检测。
But more sharp contrast makes the users eye detection easier.
而更迟顿的差比使得搁置者用眼检测更为便当。
The target detection probability is subject to the influences of many factors, including the area, distribution and contrast of the targets and so on.
目标发现概率受多方面因素的影响，包括目标的面积大小、分布、对比度等。
Contrast to the stack filter based edge detection. the proposed method gainis higher speed, uses less memory for optimal training of stack filter.
相对于基于堆栈滤波器边界检测法，该方法对堆栈滤波器的优化训练速度大大提高，所需内存大为减少；
The secondary objective was to define the optimal dose of the second-generation contrast agent to routinely use in the CEUS examinations for endoleak detection.
第二个目的是确认在CEUS中常规使用的第二代造影剂用于内漏检测时候的合适的剂量。
Vast computer experiments prove that fractal-based detection method gets stabler results than traditional maximum contrast method. Fractal-based detection method is a promising method.
大量实验证明，分形检测方法比传统的最大对比度检测方法稳定，是一种非常有前途的方法。
By qualitative contrast between this two methods, explain wavelet transform edge detection algorithm detects the image that have edge distinct, fine, fight to chirp performance strong etc.
通过对这两种方法的定性对比，得出小波变换边缘检测算法检出的图像具有边缘清晰、细腻，抗噪性能强等特点。
The main disadvantage of using LIDAR for the detection of objects in the ocean is that the backscattering clutter limits the contrast of underwater target reflections.
激光雷达在海洋水下目标探测中存在主要的问题是，海水对光的后向散射作用导致目标对比度的严重降低。
A novel method based on gradient strength and local entropy for fusion detection of weak small targets with low contrast is presented in this paper.
提出了一种基于局部梯度强度和局部熵的红外小目标融合检测的方法。
Compared with the fixed threshold and the global threshold algorithms, the proposed method obtains better detection effects for clouds in small, broken bits and weak contrast clouds.
与固定阈值和全局阈值算法相比，局部阈值插值算法对一些细碎的云和与背景反差不大的云获得了更好的检测效果。
The invention discloses a magnetic resonance tumor targeted contrast agent and a preparation method thereof, belonging to the technical field of medical detection reagents.
本发明公开了一种磁共振对比剂及其制备方法，属于医学检测试剂技术领域。
The invention discloses a magnetic resonance tumor targeted contrast agent and a preparation method thereof, belonging to the technical field of medical detection reagents.
本发明公开了一种磁共振对比剂及其制备方法，属于医学检测试剂技术领域。
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