共查询到20条相似文献,搜索用时 109 毫秒
1.
2.
3.
基于WinCE平台的人眼瞳孔快速精确定位的实现 总被引:1,自引:0,他引:1
针对如何提高瞳孔定位的效率和精度以改善眼睛检测类仪器结果的可靠性,本文介绍了基于Arm11硬件平台在WinCE环境下采用Directshow技术架构实现摄像头图像数据采集及实时视频图像处理分析的实践过程,并在此基础上运用先粗略图像定位再精确定位的方法实现实时人眼瞳孔精确定位。实验中采用的是基于图像灰度信息的瞳孔定位算法,在WinCE平台下成功精确地定位出瞳孔中心,该算法简单高效适用于嵌入式平台环境下,在WinCE环境下运用此算法成功实现了15fps的实时瞳孔定位。 相似文献
4.
5.
6.
7.
8.
为满足在不同背景条件下用户的手势识别需求,提出了一种对于动态手势定位及识别的算法。在摄像头固定、目标移动的前提下,采用ViBe算法对背景建模后结合肤色检测,对手势目标区域进行检测。文中提出了掌心的定位方法,算法利用形态学骨架运算提取图像特征,为解决用户不同衣着和动作造成判断区域的多样性和不确定性,进行有效区域选取后定位掌心坐标,根据掌心坐标通过似圆度和掌心极坐标进行手势定位和识别。实验结果证明,所提算法能够在复杂背景下准确地对手掌高于手肘的手势判断出掌心点,分割出手掌并进行手势识别,该算法同时拥有较好的鲁棒性和实时性。 相似文献
9.
车道标识线的准确检测是实现车辆自动导航和车辆安全辅助驾驶的首要问题,为了得到较理想的车道的标线边缘,利用车道的边缘特征对车道图像进行二值化和形态学处理,对车道区域实现准确的边缘检测,最后利用Hough变换定位出车道标识线,完成对车道标识线的识别。实验表明,该方法能实现对复杂环境下车道标识线的准确识别,具有较好的鲁棒性和可靠性。 相似文献
10.
11.
传统的电子门牌固化了版式且仅能够显示门牌号和客房状态,无法根据顾客喜好进行个性化调整和为顾客提供贴心信息提示等服务,与如今电子设备的信息化和智能化渐行渐远。在电子门牌行业现状的基础上,结合宾馆的项目需要,提出了基于Android操作系统,通过UPNP协议实现一款能够在网络中被自动发现的多媒体电子门牌终端系统,不仅使电子门牌具备了智能化的表现,更使得信息的发布实现了"私人定制"化。 相似文献
12.
Yang Guosheng Tan Min 《电子科学学刊(英文版)》2005,22(5):505-512
Focused on the seed region selection and homogeneity criterion in Seeded Region Growing (SRG), an unsupervised seed region selection and a polynomial fitting homogeneity criterion for SRG are proposed in this paper. First of all, making use of Peer Group Filtering (PGF) techniques, an unsupervised seed region selection algorithm is presented to construct a seed region. Then based on the constructed seed region a polynomial fitting homogeneity criterion is applied to solve the concrete problem of doorplate segmentation appearing in the robot navigation along a corridor. At last, experiments are performed and the results demonstrate the effectiveness of the proposed algorithm. 相似文献
13.
Virtual Stage: a location-based karaoke system 总被引:1,自引:0,他引:1
Chang Whan Sul Kee Chang Lee Kwangyun Wohn 《Multimedia, IEEE》1998,5(2):42-52
Virtual Stage is an extended karaoke system based on virtual reality technology. A participant becomes the main character in an interactive music video. While singing along with the song played by Virtual Stage, the participant uses body movements to interact with the virtual characters, which reside in a virtual environment and behave intelligently. In Virtual Stage, the participant's video image, grabbed by a video camera, is composited with the rendered image of the 3D virtual environment. Participants will see the realistic video image of themselves and get a false feeling of immersion, as if existing in the VE 相似文献
14.
基于OpenCV的图像阈值分割研究与实现 总被引:1,自引:0,他引:1
图像的阈值化在图像分割中有着至关重要的作用。在OpenCV算法环境下,运用固定阈值化和自适应阈值化算法,分别对同一幅图调用OpenCV中相应的函数进行处理;同时针对图像中的噪声,结合高斯模糊算法对图像噪声的滤除作用,将高斯模糊和阈值化算法结合起来,分析研究图像分割算法。结果表明自适应阈值化算法可以更有效地进行图像分割。 相似文献
15.
16.
Urban residential environment surveillance plays an important role in modern intelligent city. Satellite images have been applied in various fields, and the analysis and processing of satellite images has become an important means to obtain the information perceived by satellites. This paper focuses on city residential environment surveillance based on massive-scale visual information retrieval. Since the shortcomings of low contrast, blurred boundary, large amount of information and susceptibility to noise, the performance of satellite image segmentation is not satisfactory, which will affect residential environment surveillance. We design an improved rough set fuzzy C-means clustering algorithm combined with ant colony algorithm. More specifically, satellite images are classified based on the gradient of pixels according to the indistinguishable relation of the image combined with rough set theory. Then, the traditional fuzzy set-based fuzzy C-means clustering algorithm is applied to the satellite image segmentation technology. Subsequently, the improved algorithm-quantum ant colony algorithm and rough set fuzzy clustering C-means algorithm are combined to achieve accurate segmentation of satellite images. Afterwards, we propose a satellite image retrieval algorithm, which can assist city residential environment surveillance. Comprehensive experiment show that our proposed method is effective and robust in residential environment surveillance. 相似文献
17.
18.
19.
视频监控或激光成像在大气环境监测中有着广泛应用,然而在雾天条件下获取的图像不可避免存在视觉质量降低问题。针对雾天图像对比度增强以及噪声抑制的需要,提出了一种改进的雾天图像增强算法。首先对原图像进行正反双向的双直方图均衡处理与融合,然后重复采用上述方法对融合图像的小波分解低频系数矩阵进行增强处理,最后将处理结果和高频系数矩阵进行小波重构得到输出图像。实验结果表明,该算法处理雾天监控图像能够取得较好的对比度增强与噪声抑制性能。 相似文献
20.
针对尺寸大、厚度薄、形状复杂的大型变压器铁心硅钢片尺寸与形状测试,研究了一种以CCD摄像头作为瞄准装置的非接触式摄像快速瞄准方法。通过快速采集被测物铁心硅钢片边缘轮廓图像信息,利用图像处理技术进行快速瞄准的误差自动补偿,提高了大型变压器铁心硅钢片测试系统的瞄准精度。 相似文献