• Use the image illumination correction, reduce the dimension of face images and different lighting conditions, the use of human face images improved the BP neural network for recognition.

    运用图像进行光照校正人脸图像进行不同光照条件下的人脸图像运用改进型BP神经网络对进行识别。

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  • Secondly, the anterior segment image, which was acquired by the method of direct focal illumination, was analyzed automatically to give some physiological and pathological parameters.

    然后对利用直接焦点照明采集得到图像进行自动分析提取眼前的各种生理病理参数;

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  • A new regression algorithm of an adaptive reduced relevance vector machine is proposed to estimate the illumination chromaticity of an image for the purpose of color constancy.

    摘要提出一种新的适应约简相关向量回归算法估计图像光照色度以达到色彩一致性目的

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  • When acquiring the pavement image, the acquired image is hard for image segmentation and recognition because of the noise and the nonuniform background illumination.

    获取路面图像中,由于背景光照不均匀以及存在着一些路面噪声,给后来图像分割识别带来了一些困难

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  • 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.

    图像结构信息图像边缘纹理等,图像特征的一种,结构信息不易受照度变化的影响,同时是分辨率遥感图像中的人造目标特性主要表现形式。

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  • Since illumination condition effects recognition ratio for human face greatly, while average gray value of every face image is different, we must standardize gray value of face images.

    由于人脸识别率受照明条件影响较大各个人脸图像平均灰度相同,所以必须人脸图像进行灰度归一化。

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  • According as to the linearity of illumination function, the coefficients of basis images of varying sun position and sky conditions can be calculated to generate the desired image.

    根据光照函数线性关系,估计不同太阳位置不同天气状况图象系数,从而最终通过基图象的组合产生目标图象

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  • Combining the thoughts of image intensity normalization and two-dimensional cross-entropy, a moving object detection algorithm, which is robust against illumination changes, is presented.

    结合图像亮度归一化二维交叉熵思想提出针对光照变化鲁棒性强运动目标检测算法

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  • 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.

    相位相关作为图像匹配技术噪声较高的容忍程度,检测结果与照度无关几何失真影响小。但该方法对旋转变化非常敏感

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  • The requirements of the condenser, taken as a whole are very complex, and the illumination system does not form a true image which can also complicate the optimization process.

    聚光镜要求整体相当复杂照明系统形成真实,故可能使得优化过程复杂化

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  • 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.

    并对所设计的系统在ASAP中进行模拟得出屏幕图像畸变均匀性像面光照度分布等性能指标,得到令人满意结果

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  • There are many factors that cause the characters segmentation task difficult, such as image noise, plate frame, rivet, space mark, plate rotation and illumination variance.

    车牌字符分割存在噪声干扰边框影响铆钉间隔符影响、车牌旋转光照不均等问题。

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  • Based on the Moire effect in shadow-casting of two coded masks a new kind of optical method is proposed to map phase variation on the object image with an extended incoherent illumination.

    基于莫尔效应本文提出了种利用白光面光源进行编码栅反向投影,以等位线条纹的形式测量物体相位变化的新方法

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  • The key of background subtraction is to extract and update the background image adaptively in changeable road environment affected by all kinds of factors such as weather and illumination condition.

    由于实际交通道路状况气候、光照等多种因素影响,变化非常复杂,因此如何设计一自适应背景提取更新算法以适应实际环境的变化,背景差法关键所在

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  • Passive visual sensing method is the major method for sensing welding process, the principle of which is to capture weld pool image by the illumination of electric arc.

    被动式视觉传感方法焊接过程传感主要方法,主要原理是利用弧光照射池表面获得熔图像

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  • Experimental results show that the algorithm has the robustness against illumination changes, position translation, scale and rotated image and a superior image-retrieving performance.

    实验证明算法图像亮度变化缩放旋转具有不变性,较高检索性能

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  • Experimental results show that the algorithm has the robustness against illumination changes, position translation, scale and rotated image and a superior image-retrieving performance.

    实验证明算法图像亮度变化缩放旋转具有不变性,较高检索性能

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