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| 1 | 基于小波变换的图像压缩编码研究综述显示文摘图像压缩是指以尽量少的比特数代表原来图像的技术。小波变换由于在时域和频域同时具有局域化特性,弥补了DCT变换的不足,其多分辨率特性还便于与人眼视觉特性相结合。小波图像编码还便于与其它新兴图像编码方法相结合,成为当前研究热点。文中介绍了小波变换的基本理论,讨论了小波图像压缩研究现状和进展,并指出存在的主要问题,最后展望小波图像压缩编码的发展前景。 | 郑伟 崔跃利 王芳 | 2008 | 通信技术2008，41，2： | 23 |
| 2 | Multi-level denoising and enhancement method based on wavelet transform for mine monitoring显示文摘Based on low illumination and a large number of mixed noises contained in coal mine, denoising with one method usually cannot achieve good results, so a multi-level image denoising method based on wavelet correlation relevant inter-scale is presented. Firstly, we used directional median filter to effectively reduce impulse noise in the spatial domain, which is the main cause of noise in mine. Secondly, we used a Wiener filtration method to mainly reduce the Gaussian noise, and then finally used a multi-wavelet transform to minimize the remaining noise of low-light images in the transform domain. This multi-level image noise reduction method combines spatial and transform domain denoising to enhance benefits, and effectively reduce impulse noise and Gaussian noise in a coal mine, while retaining good detailed image characteristics of the underground for improving quality of images with mixing noise and effective low-light environment. | Yanqin Zhao | 2013 | International Journal of Mining Science and Technology2013，23，1： | 9 |
| 3 | Wavelet analysis method of harmonics and electromagnetic interference in coal mines显示文摘In this study we propose an analytical method based on orthogonal wavelet transforms for detecting harmonic noise and Electromagnetic Interference (EMI) from power supply systems and equipment in coal mines. The method will separate interference from signals through wavelet packet decomposition and then accomplish wavelet packet synthesis towards decomposition results after filtering, to remove harmonic noise and electromagnetic interference. Detailed simulation experiments are presented to study power harmonics and Electrical Fast Transient Burst (EFT/B) interference and to validate the effectiveness of our proposed method. The experimental results show that the proposed method, suitable for mutant and non-stationary signal detection, can accurately analyze harmonic interference and EMI in coal mines, as well as establish EMI source models and perform underground Electromagnetic Compatibility (EMC) prediction analyses. | ZHANG Fan LI Ming | 2010 | Mining Science and Technology2010，20，4： | 5 |
| 4 | 基于区域检测的小波分形图像压缩方法显示文摘本文将区域分割中的最大稳定极值区域(MSERs)检测方法引入到小波与分形相结合的图像压缩编码中,根据区域检测后的图像特征有效地改进了图像块的分割策略、Domain块集合的构成,使得改进后的图像压缩方法更符合人眼的视觉特性,在提高了压缩性能的同时,获得了较高的图像质量. | 邓彩霞 陈明夫 | 2012 | 渤海大学学报(自然科学版)2012，33，4： | 3 |
| 5 | 基于小波变换图像压缩编码研究的现状与发展显示文摘本中介绍了小波变换的基本理论,讨论了小波图像压缩研究现状和进展,特别就目前小波图像编码与其它新兴图像编码方法相结合研究热的点作了初步探讨,最后展望小波图像压缩编码的发展前景。 | 杜广环 | 2011 | 科技创新导报2011，8，10： | 2 |
| 6 | 基于矩阵二阶矩和小波分解的紊流图像融合灰色关联度评价显示文摘在引入多尺度小波分析的基础上,通过对紊流图像进行多尺度小波分解,建立小波系数矩阵二阶矩以标识对应部分的图像清晰度,通过特定选择机制进行图像重建,最终获得清晰的图像融合结果。选取紊流图像特征建立参数数据组,构建灰色评价数学模型,计算各图像特征之间的灰色关联度,得出了研究结论与参考建议。该实验使紊流图像的细节和缺陷等能够得到很好的展现,为图像融合关联度的监控和调试提供了理论基础和技术准备。 | 梁忠伟 叶邦彦 刘晓初 萧仲敏 | 2011 | 组合机床与自动化加工技术2011，，8： | 1 |
| 7 | 基于背景学习与方向预测的车辆图像跟踪(英文)显示文摘针对移动目标检测,提出了基于变化因子参考背景学习与方向预测算子的图像跟踪方法.以高速行驶车辆为目标建立变化因子,在此基础上进行视频图像参考背景的学习,并通过互相关匹配与坐标变换实现运动目标的定位及速度确定,结合方向预测算子对车辆行驶矢量进行预测,进而实现目标车辆的图像跟踪.跟踪实验及性能比较证明本方法可获得准确稳定的运动车辆跟踪结果,为运动目标的图像监控研究提供了新的思路. | 梁忠伟 钟志聪 | 2011 | 广州大学学报(自然科学版)2011，10，2： | 1 |
| 8 | 基于BP网络与Mahalanobis距离的图像识别技术(英文)显示文摘提出基于BP人工神经网络与Mahalanobis距离的图像识别技术。在对IC芯片图像进行二维小波分析后,通过Ma-halanobis距离在图像的低频小波系数矩阵上进行目标图元的区域搜索与位置标定,而后根据待定目标图元像素分布特征建立特征参数向量,建立BP网络对目标图元进行模式识别。实验证明此方法能够有效地对IC图像进行目标图元的位置标定与模式识别,获得准确的IC标定识别结果。 | 梁忠伟 叶邦彦 刘晓初 | 2009 | 科学技术与工程2009，9，11： | 0 |
| 9 | Wear fault diagnosis of an emulsion pump crank bearing显示文摘The total load on a crank bearing was calculated by performing a load analysis of the crank connecting rod mechanism. The Reynolds equation for hydrodynamic lubrication of the crank bearing was established at the Reynolds boundary condition and was then solved using the Holland method. From this the regular track of the bearing axis was obtained. As the crank bearing gradually wears the eccentricity ratio corresponding to the minimum oil film thickness increases gradually. The oil-bound film eventually breaks down, which allows friction and collision between the metal surfaces of the crank pin and the bearing. The rigid impact leads to excitation of high frequency vibrations at the natural frequencies of the connecting rod. The experiments show that the wear condition of the crank bearing can be identified correctly through the vibration signature at the natural frequencies of the connecting rod. The degree of wear can be predicted accurately through the energy content of the high frequency bands. | HAN Xiao-ming DU Chang-long ZHANG Yong-zhong TIE Zhan-xu | 2008 | Journal of China University of Mining and Technology2008，18，3： | 0 |
| 10 | 基于小波域的自适应运动补偿图像压缩算法显示文摘提出一种基于小波域的自适应运动补偿图像压缩算法。该算法利用小波变换的多分辨率特性,对经小波分解后的每个子带图像信号进行多分辨率运动估值(MRME)和多分辨率运动补偿(MRMC)处理,有效消除图像的冗余,增加可扩展能力,从而获得较高的图像压缩比。 | 史燕军 吴乐华 邵平 赵红雨 | 2013 | 数字通信2013，40，3： | 0 |
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