公开(公告)号：US08401280B2

公开(公告)日：2013-03-19

申请号：US12971793

申请日：2010-12-17

申请人： Eul Gyoon Lim ,  Ji Ho Chang ,  Ho Chul Shin ,  Dae Hwan Hwang

发明人： Eul Gyoon Lim ,  Ji Ho Chang ,  Ho Chul Shin ,  Dae Hwan Hwang

IPC分类号： G06K9/00 ,  G06K9/40

CPC分类号： G06K9/00

摘要： Provided is a device for improving stereo matching results. The device for improving stereo matching results includes: a stereo camera unit outputting binocular disparity images by using binocular disparity between two images preprocessed according to a plurality of preprocessing conditions; a discrete cosine transform (DCT) unit generating DCT coefficients by performing DCT on the binocular disparity images; a streak estimation unit receiving the DCT coefficients and estimating amounts of streaks distributed on a screen by using AC coefficients, including streak patterns, of the DCT coefficients; a condition estimation unit estimating a preprocessing condition, corresponding to the smallest amount of streaks of the estimated amounts of streaks, of the plurality of preprocessing conditions, as an optimal condition, and a streak removal unit generating binocular disparity images without the streaks by changing predetermined AC coefficients of the DCT coefficients and performing inverse DCT on the changed DCT coefficients.

摘要翻译： 提供了一种用于改善立体匹配结果的设备。 用于改善立体匹配结果的装置包括：立体相机单元，通过使用根据多个预处理条件预处理的两个图像之间的双目视差来输出双目视差图像; 离散余弦变换（DCT）单元，通过对双目视差图像执行DCT生成DCT系数; 条纹估计单元，通过使用DCT系数的包括条纹图案的AC系数来接收DCT系数并估计分布在屏幕上的条纹的数量; 条件估计单元，估计对应于多个预处理条件中的条纹的条纹的最小量的预处理条件作为最佳条件，以及条纹去除单元，通过改变预定的条件来生成没有条纹的双目视差图像 对DCT系数的AC系数进行DCT系数的DCT变换。

公开(公告)号：US08331617B2

公开(公告)日：2012-12-11

申请号：US12265365

申请日：2008-11-05

申请人： Eul Gyoon Lim ,  Jae Il Cho ,  Dae Hwan Hwang

发明人： Eul Gyoon Lim ,  Jae Il Cho ,  Dae Hwan Hwang

IPC分类号： G06K9/00 ,  G06K9/46

CPC分类号： H04N7/18 ,  G06K9/00664 ,  G06T7/593 ,  G06T2207/10021 ,  G06T2207/20021 ,  G06T2207/20052 ,  G06T2207/30196 ,  G06T2207/30261

摘要： A robot vision system for outputting a disparity map includes a stereo camera for receiving left and right images and outputting a disparity map between the two images; an encoder for encoding either the left image or the right image into a motion compensation-based video bit-stream; and a decoder for extracting an encoding type of an image block, a motion vector, and a DCT coefficient from the video bit-stream. Further, the system includes a person detector for detecting and labeling person blocks in the image using the disparity map between the left image and the right image, the block encoding type, and the motion vector, and detecting a distance from the labeled person to the camera; and an obstacle detector for detecting a closer obstacle than the person using the block encoding type, the motion vector, and the DCT coefficient extracted from the video bit-stream, and the disparity map.

摘要翻译： 用于输出视差图的机器人视觉系统包括用于接收左图像和右图像并在两个图像之间输出视差图的立体相机; 用于将左图像或右图像编码为基于运动补偿的视频比特流的编码器; 以及用于从视频比特流中提取图像块的编码类型，运动矢量和DCT系数的解码器。 此外，该系统包括人物检测器，用于使用左图像和右图像之间的视差图，块编码类型和运动矢量来检测和标记图像中的人物块，并且检测从标记的人到 相机; 以及用于检测比使用从视频比特流提取的块编码类型，运动矢量和DCT系数的人和视差图更接近的障碍物的障碍物检测器。

公开(公告)号：US08271204B2

公开(公告)日：2012-09-18

申请号：US12362992

申请日：2009-01-30

申请人： Seung Min Choi ,  Ji Ho Chang ,  Jae Il Cho ,  Dae Hwan Hwang ,  Jae Yeon Lee ,  Do Hyung Kim ,  Eul Gyoon Lim ,  Ho Chul Shin

发明人： Seung Min Choi ,  Ji Ho Chang ,  Jae Il Cho ,  Dae Hwan Hwang ,  Jae Yeon Lee ,  Do Hyung Kim ,  Eul Gyoon Lim ,  Ho Chul Shin

IPC分类号： G06F19/00

CPC分类号： G01H17/00 ,  G06K9/00348 ,  G06K9/0053

摘要： Provided are a human recognition apparatus and a human recognition method identifying a user based on a walking pattern. The human recognition apparatus includes a detecting unit detecting a vibration according to a user's walking, and outputting an electric signal, a pattern calculating unit acquiring a walker's walking pattern from the electric signal, and a user determining unit comparing the walking pattern with a previously measured reference data by user and identifying the user based on the comparison result. The human recognition apparatus and the human recognition method are robust against peripheral noise and can increase an acceptance rate through a simple structure and procedure by using the waling pattern, which is one-dimensional time information requiring no vast data throughput, as the user identification data.

摘要翻译： 提供了基于步行模式识别用户的人类识别装置和人类识别方法。 人体识别装置包括检测单元，用于根据用户的步行检测振动，并从电信号中输出电信号，图案计算单元获取步行模式;以及用户确定单元，将步行模式与先前测量 用户参考数据，并根据比较结果识别用户。 人类识别装置和人类识别方法对于外围噪声是鲁棒的，并且可以通过使用作为用户识别数据的不需要大量数据吞吐量的一维时间信息的波动模式，通过简单的结构和过程来提高接受率 。

公开(公告)号：US20120213065A1

公开(公告)日：2012-08-23

申请号：US13458443

申请日：2012-04-27

申请人： Ki Jong KOO ,  Dae Hwan HWANG

发明人： Ki Jong KOO ,  Dae Hwan HWANG

IPC分类号： H04W28/06

CPC分类号： H04W72/1242 ,  H04W28/14 ,  H04W84/12

摘要： A media access control (MAC) apparatus and corresponding methods for guaranteeing quality-of-service in a wireless local area network (LAN) are presented. The MAC method includes extracting, performing, determining, a first transmitting step, and a second transmitting step. The extracting includes extracting a user priority from a frame received from an upper layer and separately storing a voice frame and a non-voice frame according to an access category (AC). The performing includes independently performing backoff operations for the voice frame and the non-voice frame. The determining includes determining whether the backoff operations for the voice frame and the non-voice frame have simultaneously ended. The first transmitting includes transmitting the voice frame having a higher priority first and performing the backoff operation for the non-voice frame if the backoff operations have simultaneously ended. The second transmitting includes transmitting a frame whose backoff operation ends if the backoff operations have not simultaneously ended.

摘要翻译： 提出了一种用于保证无线局域网（LAN）中的服务质量的媒体访问控制（MAC）装置和相应的方法。 MAC方法包括提取，执行，确定第一发送步骤和第二发送步骤。 提取包括从上层接收到的帧中提取用户优先级，并根据访问类别（AC）单独存储语音帧和非语音帧。 执行包括独立地执行语音帧和非语音帧的退避操作。 确定包括确定语音帧和非语音帧的后退操作是否已经同时结束。 第一发送包括首先发送具有较高优先级的语音帧，并且如果退避操作已经同时结束，则对非语音帧执行退避操作。 第二发送包括如果退避操作没有同时结束，则发送退避操作结束的帧。

公开(公告)号：US20120087543A1

公开(公告)日：2012-04-12

申请号：US13241119

申请日：2011-09-22

申请人： Seung-Min CHOI ,  Jae-Chan Jeong ,  Jae-II Cho ,  Dae-Hwan Hwang

发明人： Seung-Min CHOI ,  Jae-Chan Jeong ,  Jae-II Cho ,  Dae-Hwan Hwang

IPC分类号： G06K9/00

CPC分类号： G06K9/00382

摘要： An image-based hand detection apparatus includes a hand image detection unit for detecting a hand image corresponding to a shape of a hand clenched to form a fist from an image input. A feature point extraction unit extracts feature points from an area, having lower brightness than a reference value, in the detected hand image. An image rotation unit compares the feature points of the detected hand image with feature points of hand images stored in a hand image storage unit, and rotates the detected hand image or the stored hand images. A matching unit compares the detected hand image with the stored hand images and generates a result of the comparison. If at least one of the stored hand images is matched with the detected hand image, a hand shape recognition unit selects the at least one of the stored hand images as a matching hand image.

摘要翻译： 一种基于图像的手检测装置，包括：手图像检测单元，用于检测与从图像输入构成拳头的手的形状对应的手形图像。 特征点提取单元在检测到的手图像中从具有比参考值低的亮度的区域中提取特征点。 图像旋转单元将检测到的手图像的特征点与存储在手图像存储单元中的手图像的特征点进行比较，并且旋转检测到的手图像或存储的手图像。 匹配单元将检测到的手图像与存储的手图像进行比较，并生成比较结果。 如果存储的手图像中的至少一个与检测到的手图像匹配，则手形识别单元将所存储的手图像中的至少一个选择为匹配的手图像。

公开(公告)号：US20120029914A1

公开(公告)日：2012-02-02

申请号：US13137256

申请日：2011-08-01

申请人： Ho-Sang Sung ,  Dae-hwan Hwang

发明人： Ho-Sang Sung ,  Dae-hwan Hwang

IPC分类号： G10L21/02

CPC分类号： G10L19/18 ,  G10L2021/02082

摘要： A method and an apparatus for transmitting a speech signal are provided. A speech signal transmitter includes a quadrature mirror filter, a base sub-band encoder, an enhancement sub-band encoder, and a network connector. The quadrature mirror filter receives a speech signal, divides the speech signal into an enhancement band speech signal and a base band speech signal, and outputs the enhancement band speech signal and the base band speech signal. The base sub-band encoder receives and encodes the base band speech signal. The enhancement sub-band encoder receives and encodes the enhancement band speech signal. The network connector multiplexes the encoded enhancement band speech signal and the encoded base band speech signal based on the kinds of networks over which speech signals are transmitted, and transmits the multiplexed signals to the networks. A speech signal is multiplexed and transmitted by various methods based on the kinds of networks. Thus, the speech signal can be efficiently transmitted.

公开(公告)号：US20110188740A1

公开(公告)日：2011-08-04

申请号：US12971793

申请日：2010-12-17

申请人： Eul Gyoon LIM ,  Ji Ho Chang ,  Ho Chul Shin ,  Dae Hwan Hwang

发明人： Eul Gyoon LIM ,  Ji Ho Chang ,  Ho Chul Shin ,  Dae Hwan Hwang

IPC分类号： G06K9/00

CPC分类号： G06K9/00

摘要： Provided is a device for improving stereo matching results. The device for improving stereo matching results includes: a stereo camera unit outputting binocular disparity images by using binocular disparity between two images preprocessed according to a plurality of preprocessing conditions; a discrete cosine transform (DCT) unit generating DCT coefficients by performing DCT on the binocular disparity images; a streak estimation unit receiving the DCT coefficients and estimating amounts of streaks distributed on a screen by using AC coefficients, including streak patterns, of the DCT coefficients; a condition estimation unit estimating a preprocessing condition, corresponding to the smallest amount of streaks of the estimated amounts of streaks, of the plurality of preprocessing conditions, as an optimal condition, and a streak removal unit generating binocular disparity images without the streaks by changing predetermined AC coefficients of the DCT coefficients and performing inverse DCT on the changed DCT coefficients.

摘要翻译： 提供了一种用于改善立体匹配结果的设备。 用于改善立体匹配结果的装置包括：立体相机单元，通过使用根据多个预处理条件预处理的两个图像之间的双目视差来输出双目视差图像; 离散余弦变换（DCT）单元，通过对双目视差图像执行DCT生成DCT系数; 条纹估计单元，通过使用DCT系数的包括条纹图案的AC系数来接收DCT系数并估计分布在屏幕上的条纹的数量; 条件估计单元，估计对应于多个预处理条件中的条纹的条纹的最小量的预处理条件作为最佳条件，以及条纹去除单元，通过改变预定的条件来生成没有条纹的双目视差图像 对DCT系数的AC系数进行DCT系数的DCT变换。

公开(公告)号：US20110040557A1

公开(公告)日：2011-02-17

申请号：US12915656

申请日：2010-10-29

申请人： Ho-Sang SUNG ,  Dae-Hwan Hwang ,  Dae-Hee Youn ,  Hong-Goo Kang ,  Young-Cheol Park ,  Ki-Seung Lee ,  Sung-Kyo Jung ,  Kyung-Tae Kim

发明人： Ho-Sang SUNG ,  Dae-Hwan Hwang ,  Dae-Hee Youn ,  Hong-Goo Kang ,  Young-Cheol Park ,  Ki-Seung Lee ,  Sung-Kyo Jung ,  Kyung-Tae Kim

IPC分类号： G10L19/00

CPC分类号： G10L19/24 ,  G10L21/038

摘要： The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by using additional bits permitted in system requirements while using a conventional speech coder as it is. In addition, the transmitter and the receiver according to the present invention have an advantage in that they enable insertion of additional quantization blocks while not changing the structure of the conventional standard speech coder, since they allocate additional bits by applying a multi-stage quantization procedure not in a speech signal domain but in a parameter domain.

摘要翻译： 本发明涉及通过使用附加比特分配方法进行语音编码和解码的发射机和接收机。 根据本发明的发射机和接收机按照原来使用传统语音编码器，通过使用系统要求中允许的附加位来实现高质量的语音通信服务。 此外，根据本发明的发射机和接收机具有的优点在于，它们能够插入附加量化块，同时不改变常规标准语音编码器的结构，因为它们通过应用多级量化过程来分配附加比特 不在语音信号域，而是在参数域中。

公开(公告)号：US20110007983A1

公开(公告)日：2011-01-13

申请号：US12837030

申请日：2010-07-15

申请人： Jae Il Cho ,  Seung Min Choi ,  Jiho Chang ,  Dae Hwan Hwang ,  Dongil Han ,  Hyeonjong Jo ,  Jongho Choi ,  Jaekwang Song

发明人： Jae Il Cho ,  Seung Min Choi ,  Jiho Chang ,  Dae Hwan Hwang ,  Dongil Han ,  Hyeonjong Jo ,  Jongho Choi ,  Jaekwang Song

IPC分类号： G06K9/40

CPC分类号： G06K9/00241 ,  G06K9/40

摘要： An image object detection apparatus includes a noise filtering block for removing image noise an input image, an image scaling block for scaling the noise-removed input image to produce a scaled input image, an image conversion block for dividing the scaled input image into multiple regions and converting the divided image by a modified census transform (MCT) method, a data processing block for comparing MCT values of the image converted by the MCT method with a preset threshold, detecting at least one candidate region and identifying a human region from said at least one detected candidate region, and an image output block for marking the identified human region on the noise-removed input image.

摘要翻译： 图像对象检测装置包括用于去除输入图像的图像噪声的噪声滤波块，用于缩放噪声消除的输入图像以产生缩放的输入图像的图像缩放块，用于将缩放的输入图像分割成多个区域的图像转换块 以及通过修改的普查变换（MCT）方法转换分割的图像，用于将通过MCT方法转换的图像的MCT值与预设阈值进行比较的数据处理块，检测至少一个候选区域并从所述位置识别人区域 至少一个检测到的候选区域，以及用于在噪声去除的输入图像上标记所识别的人类区域的图像输出块。

公开(公告)号：US20100259597A1

公开(公告)日：2010-10-14

申请号：US12546156

申请日：2009-08-24

申请人： Seung Min CHOI ,  Ji Ho Chang ,  Jae Il Cho ,  Dae Hwan Hwang

发明人： Seung Min CHOI ,  Ji Ho Chang ,  Jae Il Cho ,  Dae Hwan Hwang

IPC分类号： H04N13/02 ,  G06K9/00

CPC分类号： G06K9/00255 ,  G06T7/593 ,  G06T7/74 ,  G06T2207/10012 ,  G06T2207/30201

摘要： Provided are a face detection apparatus and a distance measurement method using the same. The face detection apparatus detects a face using left and right images which are acquired from a stereo camera. The face detection apparatus measures distance from the stereo camera to the face using an image frame which is provided from the stereo camera without a stereo matching process. Accordingly, the face detection apparatus simultaneously performs face detection and distance measurement even in a low-performance system.

摘要翻译： 提供了一种脸部检测装置和使用其的距离测量方法。 面部检测装置使用从立体摄像机获取的左右图像来检测脸部。 面部检测装置使用从立体摄像机提供的没有立体匹配处理的图像帧来测量从立体摄像机到脸部的距离。 因此，脸部检测装置即使在低性能系统中也同时执行面部检测和距离测量。