Design of object surveillance system based on enhanced fish-eye lens

来源 :Chinese Optics Letters | 被引量 : 1次 | 上传用户:liuchun9876
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A new method is proposed for the object surveillance system based on the enhanced fish-eye lens and the high speed digital signal processor (DSP). The improved fish-eye lens images an ellipse picture on the charge-coupled device (CCD) surface,which inc
其他文献
在视频监控和视频会议应用领域中都会使用图像滤波、图像分割等技术。首先提出了一种改进型图像分割滤波方法,然后阐述了对多图像分割拼接采用该滤波方法的FPGA(现场可编程逻辑阵列)实现过程。
期刊
Several approaches for fast generation of digital holograms of a three-dimensional (3D) object have been discussed. Among them, the novel look-up table (N-LUT) method is analyzed to dramatically reduc
期刊
图像分割是从医学图像中将不同的组织根据灰度等信息加以区分的技术,是实现医学图像三维重建的基础,分割的效果直接影响到三维重建后模型的精确性。良好分割使医生能够对病变组织进行定性及定量的分析,从而提高医学诊断
期刊
Sub-lines are one-dimensional diffraction patterns representing the light beams emerging from horizontal planes of an object image. Past research has demonstrated that the sub-lines can be encapsulate
期刊
Freeform surfaces are increasingly used in the design of compact optical systems. Interferometric null test with computer generated hologram (CGH), which has been successfully used in highly accurate
期刊
A three-dimensional (3D) object reconstruction technique that uses pure-phase computer-generated holograms (CGHs) and a phase-only spatial light modulator (SLM) is proposed. The full parallax CGHs are
期刊
The correlation properties of the optical field diffusely reflected from a rough surface under coherent illumination are analyzed numerically. The cross-correlations of the complex amplitudes and the
期刊
The generation and propagation dynamics of multiple optical vortices hosted in a Gaussian beam are experimentally demonstrated by use of the computer-generated holography. Fluid-like motions of the mu
期刊
研究了一种基于OTSU的自适应阈值方法,该法在基于OTSU确定的参数基础上,充分利用图纸像素点信息及其邻域的空间相关信息,自适应确定窗口尺寸参数,很好地解决了噪声、栅格等干扰因素的影响,极大地优化了计算量,提高了运行速度。试验表明,准确性较高,具有较好的推广应用价值。
期刊
提出一种基于无下采样Contourlet变换(NSCT)和人眼视觉系统(HVS)的自适应稳健盲数字水印方案,该方案在NSCT域中对人类视觉系统的特性进行建模,利用人眼的视觉掩盖机制自适应嵌入水印序列。实验结果表明,该数字水印方案在保证人眼视觉不可见性的前提下,对包括噪声、JPEG压缩、图像剪切、滤波、图像扭曲等均具有很强的稳健性,并且检测水印时无需原始图像,是一种很有前途的盲水印方案。
期刊