专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2007097586A1 PORTABLE APPARATUSES HAVING DEVICES FOR TRACKING OBJECT'S HEAD, AND METHODS OF TRACKING OBJECT'S HEAD IN PORTABLE APPARATUS 审中-公开
标题翻译：具有用于跟踪对象头部的设备的便携式设备以及在便携式设备中跟踪对象头部的方法
公开(公告)号：WO2007097586A1
公开(公告)日：2007-08-30
申请号：PCT/KR2007/000951
申请日：2007-02-23
申请人： KTF TECHNOLOGIES , INC. , YANG, Yu-Kyung
发明人： YANG, Yu-Kyung
IPC分类号： H04B1/40
CPC分类号： G06F3/012 , G06K9/00234 , H04N5/23219
摘要： The portable apparatus includes camera section, head tracking section, image processor, video codec section and camera controller. The camera section obtains image of object. The head tracking section receives the image from the camera section, detects head area from the image, simulates the head area using model of ellipse, and calculates shape similarity, which represents similarity between the shape of the gradients of pixels at boundary of the ellipse and that of the ellipse, and color histogram similarity between internal area of candidate figure and internal area of the modeling figure. In order to obtain of the position of candidate ellipse of which color histogram similarity has maximum value, mean shift, which requires small amount of calculation with respect to first number of samples in internal area of the candidate ellipse, is used. Image processing section performs image-processing on the image based on quality information of the detected head area. Video codec section performs differential encoding on the detected head area based on the location of the detected head area. The camera controller controls rotation of the camera section on the basis of the location of the detected head area. Robust head tracking algorithm with small quantity of calculation is modified to be adapted to portable device, the user's head area may be tracked appropriately for the portable device.
摘要翻译：便携式设备包括相机部分，头部跟踪部分，图像处理器，视频编解码器部分和相机控制器。相机部分获取物体的图像。头跟踪部分从相机部分接收图像，从图像中检测头部区域，使用椭圆模型模拟头部区域，并计算形状相似度，其表示椭圆边界处的像素梯度的形状与椭圆形，以及候选图的内部区域与建模图的内部区域之间的颜色直方图相似度。为了获得颜色直方图相似度具有最大值的候选椭圆的位置，使用相对于候选椭圆的内部区域中的第一数量样本需要少量计算的平均偏移。图像处理部基于检测到的头部区域的质量信息对图像进行图像处理。视频编解码器部分基于检测到的头部区域的位置对检测到的头部区域执行差分编码。摄像机控制器基于检测到的头部区域的位置来控制照相机部分的旋转。具有少量计算的鲁棒头跟踪算法被修改为适用于便携式设备，用户的头部区域可以适当地跟踪便携式设备。

IPRDB

热门服务

关于我们

友情链接

联系方式