Description: 一个实现视频关键帧提取算法的类，用C++实现，基本思想还是双阈值方法-A class which realize the algorithm to check out the key frame of video is written by c++. The basal idea of the algorithm is based on double threshold. Platform: |
Size: 2793 |
Author:方平 |
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Description: This paper presents a novel segmentation algorithm for metallographic images, especially those objects without regular boundaries and homogeneous intensity. In metallographic quantification, the complex microstructures make the conventional approaches hard to achieve a satisfactory partition. We formulate the segmentation procedure as a new framework of iterative watershed region growing constrained by the ridge information. The seeds are selected by an effective double-threshold approach, and the ridges are superimposed as the highest waterlines in watershed transform. To tackle the over-segmentation problem, the blobs are merged iteratively with the utilization of Bayes classification rule. Experimental results show that the algorithm is effective in performing segmentation without too much parameter tuning. Platform: |
Size: 712264 |
Author:jjrs05 |
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Description: This paper presents a novel segmentation algorithm for metallographic images, especially those objects without regular boundaries and homogeneous intensity. In metallographic quantification, the complex microstructures make the conventional approaches hard to achieve a satisfactory partition. We formulate the segmentation procedure as a new framework of iterative watershed region growing constrained by the ridge information. The seeds are selected by an effective double-threshold approach, and the ridges are superimposed as the highest waterlines in watershed transform. To tackle the over-segmentation problem, the blobs are merged iteratively with the utilization of Bayes classification rule. Experimental results show that the algorithm is effective in performing segmentation without too much parameter tuning. Platform: |
Size: 712264 |
Author:jjrs05 |
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Description: 基于LMS的双向回波削除源码，不过回波幅度不要大于0.2,否则算法认为DOUBLE TALK DETECT。各位可修改此阀值，试试效果-based on the two-way LMS Echo slashing source, but not greater than the rate Echo 0.2, or that the algorithm** DOUBLE TALK. You can modify this threshold, try Effect Platform: |
Size: 20480 |
Author:陈龙 |
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Description: 一个实现视频关键帧提取算法的类，用C++实现，基本思想还是双阈值方法-A class which realize the algorithm to check out the key frame of video is written by c++. The basal idea of the algorithm is based on double threshold. Platform: |
Size: 2048 |
Author:方平 |
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Description: 本电子钟采用PIC16C55单片机控制，适于温室的定时恒温或自来水的定时定压控制等。PIC16C55单片机工作电压为2.5～6.25V，功耗低、驱动能力强。本电子钟可以控制一路负载在24小时内的3次开/关；一个双限触发的定时输出口，既可接传统的功率保持型继电器，也可接脉冲继电器。本机用四位LED数码管扫描式显示，还有消隐(省电)工作方式，使用起来非常灵活、方便。-The electronic bell used PIC16C55 Singlechip control, suitable for greenhouse thermostat timing timing or water pressure control. PIC16C55 Singlechip operating voltage for the 2.5 ~ 6.25V, low power consumption, driver ability. The electronic bell all the way to control the load within 24 hours of 3 times on/off a double threshold timing trigger output can then maintain the traditional power-type relays, impulse relays can also be received. The machine scans the four LED digital tube display, as well as blanking (power) work, to use a very flexible and convenient. Platform: |
Size: 119808 |
Author:罗志军 |
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Description:
Motion detection results
If you double-click the Switch block so that the signal is connected to the SAD side, the Video Viewer block displays the SAD values, which represent the absolute value of the difference between the current and previous image. When these SAD values exceed a threshold value, the demo highlights the quadrant in red.
Note that the difference image itself may be viewed, in place of the original intensity image, along with the red motion highlighting, which indicates how the SAD metric works. Platform: |
Size: 11264 |
Author:radim.rh |
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Description: 认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。-In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method. Platform: |
Size: 374784 |
Author:丽丽 |
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Description: 图像的矩阵运算 用于图像像素的尺度变换，归一化；图像读取，阈值分割，矩阵的加减乘数运算，以及图像的读写；数据类型支持int，double，以及复数complex类型-Image matrix operations for image pixels scale transformation, normalization image reads, threshold segmentation, the multiplier matrix addition and subtraction operations, as well as images of reading and writing data type support int, double, and complex type of complex Platform: |
Size: 126976 |
Author:Jack |
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Description: 最优的阶梯型边缘检测算法(canny边缘检测)
1.Canny边缘检测基本原理
(1)图象边缘检测必须满足两个条件：一能有效地抑制噪声；二必须尽量精确确定边缘的位置。
(2)根据对信噪比与定位乘积进行测度，得到最优化逼近算子。这就是Canny边缘检测算子。
(3)类似与Marr（LoG）边缘检测方法，也属于先平滑后求导数的方法。
2.Canny边缘检测算法：
step1:用高斯滤波器平滑图象；
step2:用一阶偏导的有限差分来计算梯度的幅值和方向；
step3:对梯度幅值进行非极大值抑制；
step4:用双阈值算法检测和连接边缘。
step1:高斯平滑函数
-The optimal type stair edge detection algorithm (canny edge detection)
1 Canny edge detection principle
(1) the image edge detection must meet two conditions: one can effectively reduce the noise, 2 must try to accurately determine edge position.
(2) according to the signal-to-noise ratio and the product localization estimate, get optimal approximation operator. This is the Canny edge detection operators.
(3) similar to Marr (LoG) edge detection method, also belongs to the first derivative method for smooth after.
2 Canny edge detection algorithm:
Step1: using gauss filter smooth image,
Step2: a partial derivatives with finite difference to calculate gradient value and direction,
Step3: a gradient of maximum inhibition,
Step4: double threshold algorithm of edge detection and connection.
Step1: gaussian smooth functions Platform: |
Size: 1271808 |
Author:lx |
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Description: 小波模极大值结合双阈值边缘检测，利用canny边缘检测原理-edge detection based on wavelet modulus maximum and double threshold Platform: |
Size: 2048 |
Author:岳龙门 |
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Search - double threshold