相位相关作为一种图像匹配技术对噪声有较高的容忍程度，检测结果与照度无关，受几何失真影响小。但该方法对旋转变化非常敏感。
Phase correlation algorithm as a kind of image matching method has many advantages such as insensitive to noise, unrelated to illumination of target, immune to geometric distortion.
用该方法对实验环境照度下捕捉的图像和红外光源辅助照明的图像进行了分析，并与主动轮廓线方法对比。
The proposed method is applied to the visible-light image and IR-illuminated image in the experimental condition, and contrasted with a method based on active contour.
结果是目标上的照度、后向散射光和信号光在光电阴极面上的照度增加，目标与背景图像的对比度降低；
The results demonstrate that the irradiance on object, backscattering and signal irradiance on photo-cathode are increased and the image contrast between object and background is decreased.
针对传统去噪方法会导致图像细节模糊的问题，提出一种低照度条件下的图像自动降色去噪方法。
To resolve the problem that the traditional de-noise methods will blur the detail of image, this paper introduces a new method to de-noise the image noise in low light.
图像结构信息，如图像的边缘、纹理等，是图像特征的一种，结构信息不易受照度变化的影响，同时是高分辨率遥感图像中的人造目标特性的主要表现形式。
Image structure information, such as edges and texture, is robust to the illumination change and is the main characteristic of man-made object in high resolution remote sensing imagery.
并对所设计的系统在ASAP中进行了模拟，得出了屏幕图像畸变、均匀性和像面光照度分布等性能指标，得到令人满意的结果。
The simulation experiment was implemented with ASAP, and distortion, uniformity and illumination distribution of the image on the screen were gained. The experimental results were satisfied.
卫星图像波段平均太阳辐照度是计算表观反射率的重要参数。
Mean solar spectral irradiance of satellite is an important parameter for the computation of appearance reflectance.
但人脸图像中表情、姿态、光照度等内外在因素皆多变，使得该研究至今仍颇具挑战性。
However, because of the complex facial structure, the diverse facial expression and the changing light intensity, face recognition is still being recognized as a challenging research.
但人脸图像中表情、姿态、光照度等内外在因素皆多变，使得该研究至今仍颇具挑战性。
However, because of the complex facial structure, the diverse facial expression and the changing light intensity, face recognition is still being recognized as a challenging research.
应用推荐