图像对比度

实验表明，该程序可以快速、准确地对灰度图像进行灰度变换和中值滤波，达到了使图像对比度增强、抑制噪声，改善图像质量的预期目的。

The experiment indicated that this procedure may be fast and accurately carried on the gradation transformation to the gradation picture and center the value filter and can make the picture contrast gradient strengthened , the noise eliminated and the picture quality improved .

关于MRI反转恢复技术中图像对比度反转现象的研究

Study of the phenomenon of reverse imaging contrast in MRI inversion recovery technology

康普顿散射在X射线成像中起着非常重要的作用，它既有助于图像对比度的形成，也可能损害图像对比度。

Compton scattering plays a very important role in X-ray imaging , it is both helpful and harmful to X-ray image contrast .

我们基于LBP算法提出一种新的增强图像对比度的方法。

We proposed a new method for the image contrast enhancement inspired by LBP .

结论联合应用SENSE技术能显著缩短扫描时间，而保持图像对比度基本不变。

Meanwhile , contrast resolution on SENSE imaging almost kept the same as that on conventional sequences . Conclusion SENSE technique can significantly shorten scan time and keep the high image quality .

Frenz等人也利用声透镜结合CCD成像方法实现了对光声信号的实时三维成像，并且获得的光声图像对比度和灵敏度都比较高。

Al . had got 3-D real-time optoacoustic image with much higher optical contrast and ultrasonic resolution by using an acoustic lens system and CCD system .

基于快速双边滤波的HDR图像对比度调整

Adjust the Contrast of High-Dynamic-Range Images Based on Filtering

基于对非完全Beta函数的研究，介绍了三种不同的自适应图像对比度增强方法。

In this paper , based on the research on Incomplete Beta Function , we introduce three different methods for implementing self-adaptive image contrast enhancement .

基于遗传算法和非完全Beta函数，介绍了一种自适应的图像对比度增强方法，并将其应用到辐射图像的增强处理中。

Based on genetic algorithm and incomplete beta function , we introduce a self-adaptive method for image contrast enhancement and apply this method to radiograph image enhancement .

基于GLG算法的彩色图像对比度增强改进方法

Improved Color Image Contrast Enhancement Method Based on GLG

BR（D96N）膜记录图像对比度的实验研究

Study on the Contrast of the Recorded Image Based on the BR_ ( D96N ) Thin Film

针对图像对比度弱的情况，提出了一种基于FPGA的数字图像自动增益控制实现方法，较为详细地阐述了自动增益控制的基本工作原理，给出了相应的流程图和实际应用效果图。

In view of the weak contrast images , a digital image AGC method based on FPGA and the operating principle of AGC are presented in detail . The corresponding flow chart and the practical application effectiveness are given .

针对小波变换不能涉及过多尺度的问题，分析了边缘类型对小波多尺度边缘提取的影响。结合红外目标图像对比度低，噪声大，灰度缓慢变化的特点提出基于Canny算子的梯度相位法。

Analyzing the effluence of edge type on the wavelet edge extraction and combining low contrast and big noise characterizations of IR target image , a Canny-based gradient phase detection method is proposed .

结果表明，杂散光使得L形图形图像对比度降低、线宽减小和图形位置误差增大；

The results show that the flare leads to reduction of image contrast , shrinkage of line-width and increment of pattern place error .

为提高液晶投影机的光能利用率和图像对比度，设计了一种宽角度宽波长的光学薄膜偏振分束器（PBS）。

In order to improve the energy efficiency and image contrast of liquid crystal display ( LCD ) projector , a wide-angle and broadband optical thin-film polarizing beam splitter ( PBS ) was designed .

首次使用葡萄糖与丙三醇混合高渗制剂进行了提高OCT成像深度和图像对比度的试验，并得到使用混合溶液较丙三醇可提高人群敏感度的初步结果。

Using hyperosmotic mixture of glycerin and glucose in experiment , the visible depth and contrast of OCT was concurrent enhanced . It is proved that the mixture has higher human sensitivity than using glycerin alone .

实验表明，基于平板扫描器的AFM具有大范围均匀扫描下良好的图像对比度和清晰度，具有应用的广泛性，扫描的稳定性和重复性。

The experiments show that the AFM system based on plat scanner has many advantages of good image contrast and definition even in a large scanning range , and has a universal application with good scanning stability and repeatability .

研究了地面光谱反射特性和光照强度对微光图像对比度的影响，导出了包含ICCD相机综合特性的图像仿真方程。

The effects of radiation flux and ground spectral reflectance to low-light-level ( LLL ) image contrast are investigated . An image simulation equation involving ICCD synthetic response characteristics is derived .

在LCD定标器（Scaler）中实现缩放处理时，由于所采取算法的自身缺陷，会导致缩放后的图像对比度下降、边缘模糊，因此，有必要对图像进行锐化处理来进行图像质量补偿。

When LCD scaler is processing , with limitation of algorithm itself , the quality of output image becomes worse , such as contrast decreased , edge blured , so it is necessary for scaler to add picture sharpness module to compensate .

对SPECT的穿透衰减校正装置进行模型和临床实验，结果显示穿透衰减校正能有效降低人体对γ射线的衰减影响，显著改善深部位置的图像对比度，提高诊断准确性。

A transmission attenuation correction system of SPECT was valued with phantoms and in clinic . The results showed that transmission attenuation correction effectively cut down attenuation of γ ray caused by human body . It improves image contrast in deep location and accuracy of diagnosis finally .

LBP是一种灰度范围内的纹理描述方式，它从一种纹理局部近邻定义中衍生出来，最初是为了辅助性地度量局部图像对比度而提出。

Derived from a general definition of texture in a local neighborhood , the local binary pattern ( LBP ) texture analysis operator is defined as a gray-scale invariant texture measure . It was first introduced as a complementary measure for local image contrast .

与传统MSR（多尺度Retinex）算法比较，结果显示图像对比度明显增强，视觉效果得到改善，提升了图像中明暗凸变部分。

Compared with traditional MSR ( multi-scale Retinex ) algorithm , the results show significantly enhancement , visual effects are improved , and the bright and dim part of the image is enhanced .

主要研究内容包括：1.针对BGA射线图像对比度低、边缘模糊等特点，研究了基于熵算子边缘检测的多级组合滤波算法和基于正弦隶属度函数的模糊增强算法。

The main contents include : 1 . We studied the algorithm of multi-level combined filter based on the edge detection of entropy operator and the fuzzy enhancement algorithm based on the sinusoidal membership function for the low contrast and fuzzy edge of BGA-ray images .

小波域非完全贝塔变换增强红外图像对比度

Infrared image contrast enhancement with in-complete beta transform in wavelet domain

因此，提高图像对比度是很必要的。

Therefore , enhancing the image contrast is very essential .

一种快速收敛的合成孔径声纳图像对比度最优化自聚焦算法

A fast convergence image contrast optimization autofocus algorithm for synthetic aperture sonar

用于图像对比度增强的直方图锥形拉伸算法

Algorithm of Histogram Cone-shaped Extending Applied to Image Contrast Enhancement

基于相似度测量的医学超声图像对比度增强

Contrast enhancement of medical ultrasonic images based on homogeneity measurement

图像对比度自适应调整算法

Adaptive adjusting algorithm for the contrast of the X-ray images

目的：寻找一种较理想的调整图像对比度的方法。

OBJECTIVE : To search an ideal way to regulate contrast of image .