A method for image enhancement based on light compensation was proposed to enhance the image with imbalanced local illumination. 针对局部光照不均图像的增强问题,提出了一种新的基于光照补偿的图像增强方案。
Local illumination varying detection function was determined to detect illumination variation. 定义局部光照变化测定函数,检测光照变化;
Illumination of Truth In this paper, the electromagnetic scattering characteristics of some electrically large metallic structures that have local illumination are researched. 真理的启示&读加达默尔的《真理与方法》本文主要研究电大尺寸物体在局部照射下的电磁散射特性。
Local plane wave decomposition of one-way propagator and the applications to directional illumination analysis and target-structure oriented imaging 单向传播子的局部平面波分解以及在定向照明分析和目标特征成像中的应用
The basic idea is illuminating the scene with the light probe images. To simplify the design of local illumination model, the bidirectional transmit distribution function is introduced. 在研究基于图像的局部光照模型时,又提出了双向折射率分布函数这一概念,从而简化了局部光照模型的设计。
Then the derivation of local illumination source is reported, the near-field electromagnetic scattering characteristics of some electrically large structures are calculated and analyzed. 论文在推导出实现局部照射的激励源的基础上,计算并分析一些电大结构的近场局部照射下的电磁散射特性。
Finally, the entire domain Galerkin method is adopted to analyze the backward scattering characteristic of electrically large metallic plate in local illumination. 最后,本文采用全域基伽略金法分析电大金属平板局部照射下的后向散射特性。
Adaptive weight data fusion was adapted in the local fusion, this algorithm was used to obtain the exact value of the variables, such as the value of voltage, current, the temperature of the environment and the solar illumination. 局部信息融合采用自适应加权数据融合算法,用该算法获得各电量(电压、电流)传感器以及环境信息(太阳照度、环境温度)传感器的精确值。
Local normalization preprocess can effectively solve the illumination uneven influence by extracting the lighting irrelevant features fo the face image. 局部归一化预处理是一种通过提取图片中与光照无关的特征来解决光照不均匀问题的方法。
Target pre-location method based on local particle filter using illumination invariants is used to realize automatic calibration estimation for moving targets, which realizes PTZ pre-adjusting and improves the initiative of system adjustment. 采用局部光照不变特征粒子滤波的目标预定位方法,对运动目标实现自动估计的标定,实现PTZ的预调节,提高了系统调节的主动性。
Second, the paper has researched real-time lighting including global lighting, local illumination and real-time multi-lights lighting. 其次研究了全局光照模型、局部光照模型和多光源光照模型。
But LPP operates directly on the whole face images and only global information about face image can be extracted while local information is neglected, hence LPP is not very effective under different facial expression and illumination condition. 但LPP方法作用在整张人脸图像上,仅能提取人脸的全局信息,难以顾及人脸的局部信息,故在复杂的人脸表情和光照条件下此方法并不十分有效。
The local contrast descriptor is proposed as the feature vector for each pixel to remove the influences of uniform illumination changes and reduce the computational cost of feature extraction, and ensemble method is used to discriminate patterns between landmarks and backgrounds. 该算法采用局部对比度描述符作为每个像素点的特征向量,既消除了均匀光照变化的影响,又减小了特征提取的计算量,利用集成学习算法实现区分目标和背景像素的目的。
The proposed operator is more complete than the original local binary pattern feature extraction operator model, and more robust for illumination changes and occlusion. 该算子比原始局部二值模式算子提取特征更完整,并且对光照变化和遮挡更具有鲁棒性。
As an important local feature, interest point preserves typical information and reduces the computation efficiently. Moreover it is invariant to the rotation transformation and almost not affected by illumination changes. 而兴趣点作为图像的一种重要局部特征,保留了图像场景中的重要特征信息并同时有效地减少了信息的数据量而且具有旋转不变性,几乎不受光照条件的影响。
Compared with the global features, the local features are more distinctive, invariable and robust. Thus, the local features are more adaptive when the image has blur background, partial occlusion or illumination changes. 与传统的图像全局特征相比,图像的局部特征具有更好的唯一性、不变性和鲁棒性,能更好的适应图像背景混杂、局部遮挡、光线变化等情况。
As a new developed texture analysis method, local binary pattern ( LBP) can effectively overcome the rotation and non-uniform illumination problems for its rotation and gray-scale invariant character. 局部二值模式(LBP)是近年来发展起来的一种有效的纹理描述算子,它具有较强的旋转和灰度不变性,可以有效克服旋转和光照不均匀问题。
With Local Binary Pattern ( LBP) and Gabor wavelet have robust illumination characteristics, a fusion of multi-scale LBP histogram features and fast Gabor features of regional cascade is proposed. 结合局部二值模式(LBP)和Gabor小波对光照变化具有一定鲁棒性的特性,提出了一种融合多尺度LBP直方图特征和快速Gabor特征区域级联的人脸表示方法。
First we choose local symmetry feature to represent the vehicle image, it has strong illumination adaptability and invariance. 首先我们选择局部对称性特征来表达车辆图像,其具有很好的光照适应性和不变性。