公开(公告)号：US20130044951A1

公开(公告)日：2013-02-21

申请号：US13280084

申请日：2011-10-24

申请人： Der-Chun CHERNG ,  Yan-Chen LU

发明人： Der-Chun CHERNG ,  Yan-Chen LU

IPC分类号： G06K9/00

CPC分类号： G06T5/009 ,  G06T5/40 ,  G06T7/194 ,  G06T7/254 ,  H04N7/18

摘要： A moving object detection method using image contrast enhancement includes receiving a source image, in which each pixel has a pixel illumination value; processing the source image using an image contrast enhancement procedure; executing a change detection procedure to compare a background model and the source image being processed using the image contrast enhancement procedure, and outputting a detection result accordingly; and executing a background and foreground separation procedure to output a moving object according to the detection result. The image contrast enhancement procedure may include generating a histogram of pixel illumination values; calculating a dynamic distribution range and a cumulative distribution function (CDF) of the source image based on the histogram; executing a mapping table generation procedure to generate a mapping table based on the dynamic distribution range and the CDF; and modifying pixel illumination values based on the mapping table to enhance image contrast of the source image.

摘要翻译： 使用图像对比度增强的移动物体检测方法包括接收源图像，其中每个像素具有像素照明值; 使用图像对比度增强程序处理源图像; 执行改变检测程序以使用图像对比度增强程序比较正在处理的背景模型和源图像，并相应地输出检测结果; 以及执行背景和前景分离程序以根据检测结果输出移动物体。 图像对比度增强过程可以包括生成像素照度值的直方图; 基于直方图计算源图像的动态分布范围和累积分布函数（CDF）; 执行映射表生成过程，以基于动态分布范围和CDF生成映射表; 以及基于所述映射表修改像素照明值以增强所述源图像的图像对比度。

公开(公告)号：US20130044911A1

公开(公告)日：2013-02-21

申请号：US13296654

申请日：2011-11-15

申请人： Chun-Fu SHEN ,  Der-Chun CHERNG

发明人： Chun-Fu SHEN ,  Der-Chun CHERNG

IPC分类号： G06K9/00

CPC分类号： G06T7/251 ,  G06T2200/28 ,  G06T2207/10024 ,  G06T2207/20021 ,  G06T2207/30212 ,  G06T2207/30232

摘要： A particle filter is suitable for performing particle filtering on a frame to track a particular object in the frame. The particle filter includes a frame cache, an observation model generator, and a particle filter controller. The frame cache is connected to a system memory through a system bus, in which the system memory stores all image blocks of the frame; and the frame cache obtains the at least one image block of the frame from the system memory and stores the obtained image block. The observation model generator reads at least one pixel from the frame cache, and generates an observation model corresponding to the object and the read image block according to the read pixel. The particle filter controller obtains the observation model from the observation model generator, and determines and outputs an object tracking result of the object according to the observation model.

摘要翻译： 粒子滤波器适用于对帧执行粒子滤波以跟踪帧中的特定对象。 粒子滤波器包括帧缓存，观察模型生成器和粒子滤波器控制器。 帧缓存通过系统总线连接到系统存储器，其中系统存储器存储帧的所有图像块; 并且帧高速缓存从系统存储器获取帧的至少一个图像块并存储所获得的图像块。 观察模型生成器从帧高速缓存读取至少一个像素，并且根据读取的像素生成与对象和读取图像块对应的观察模型。 粒子滤波器控制器从观测模型发生器获取观测模型，根据观测模型确定并输出对象的物体跟踪结果。

公开(公告)号：US08600109B2

公开(公告)日：2013-12-03

申请号：US13296654

申请日：2011-11-15

申请人： Chun-Fu Shen ,  Der-Chun Cherng ,  Sheng-Yan Yang ,  Yan-Chen Lu

发明人： Chun-Fu Shen ,  Der-Chun Cherng ,  Sheng-Yan Yang ,  Yan-Chen Lu

IPC分类号： G06K9/00

CPC分类号： G06T7/251 ,  G06T2200/28 ,  G06T2207/10024 ,  G06T2207/20021 ,  G06T2207/30212 ,  G06T2207/30232

摘要： A particle filter is suitable for performing particle filtering on a frame to track a particular object in the frame. The particle filter includes a frame cache, an observation model generator, and a particle filter controller. The frame cache is connected to a system memory through a system bus, in which the system memory stores all image blocks of the frame; and the frame cache obtains the at least one image block of the frame from the system memory and stores the obtained image block. The observation model generator reads at least one pixel from the frame cache, and generates an observation model corresponding to the object and the read image block according to the read pixel. The particle filter controller obtains the observation model from the observation model generator, and determines and outputs an object tracking result of the object according to the observation model.

摘要翻译： 粒子滤波器适用于对帧执行粒子滤波以跟踪帧中的特定对象。 粒子滤波器包括帧缓存，观察模型生成器和粒子滤波器控制器。 帧缓存通过系统总线连接到系统存储器，其中系统存储器存储帧的所有图像块; 并且帧高速缓存从系统存储器获取帧的至少一个图像块并存储所获得的图像块。 观察模型生成器从帧高速缓存读取至少一个像素，并且根据读取的像素生成与对象和读取图像块对应的观察模型。 粒子滤波器控制器从观测模型发生器获取观测模型，根据观测模型确定并输出对象的物体跟踪结果。

公开(公告)号：US20090310823A1

公开(公告)日：2009-12-17

申请号：US12456212

申请日：2009-06-11

申请人： Der-Chun Cherng ,  Chih-Hao Chang

发明人： Der-Chun Cherng ,  Chih-Hao Chang

IPC分类号： G06K9/00

CPC分类号： G06K9/4642 ,  G06K2009/3291 ,  G06T7/248 ,  G06T7/277 ,  G06T2207/10016 ,  G06T2207/30196 ,  G06T2207/30232

摘要： An object tracking method utilizing spatial-color statistical models is used for tracking an object in different frames. A first object is extracted from a first frame and a second object is extracted from a second frame. The first object is divided into several first blocks and the second object is divided into several second blocks according to pixel parameters of each pixel within the first object and the second object. The comparison between the first blocks and the second blocks is made to find the corresponding relation therebetween. The second object is identified as the first object according to the corresponding relation.

摘要翻译： 利用空间色彩统计模型的对象跟踪方法用于跟踪不同帧中的对象。 从第一帧提取第一对象，并从第二帧提取第二对象。 第一对象被分成几个第一块，并且根据第一对象和第二对象内的每个像素的像素参数将第二对象分成几个第二块。 使第一块和第二块之间的比较找到它们之间的对应关系。 根据对应关系，将第二物体识别为第一物体。