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公开(公告)号：US09030485B2
公开(公告)日：2015-05-12
申请号：US13658039
申请日：2012-10-23
Applicant: Electronics and Telecommunications Research Institute , National University of Sciences & Technology
Inventor： Yong Ju Cho , Yong Ju Lee , Seung Kwon Beack , Ji Hun Cha , Seong Yong Lim , Myung Seok Ki , Joo Myoung Seok , Jin Woong Kim , Muhammad Murtaza Khan , Rehan Hafiz , Haris Anis , Mutahir Latif , Ashar Rasul , Arshad Ali
IPC: G09G5/00 , G09G5/02 , G09G5/36 , H04N5/46 , H04N1/46 , H04N1/40 , G03F3/08 , G06K9/00 , G06K9/40 , G06K9/36 , H04N9/31 , G06F3/14
CPC classification number: H04N9/3147 , G06F3/1446 , G09G2320/0233 , G09G2320/0285 , G09G2320/0693 , H04N9/3182 , H04N9/3194
Abstract: An apparatus and a method for correcting colors of an image projection device are provided. The method includes: acquiring a photographed image by photographing a sample image projected on projection surface; generating input-output color information for n regions, based on color values of a block in the sample image and corresponding color values of the block in the photographed image; selecting one of the n regions of photographed images as a reference region; generating look-up tables (LUTs) for non-reference regions, based on the reference region and the input and output color information; and correcting colors of input images to be projected by the image projection device using the look-up tables, thereby minimizing color difference of the input images on the projection surface for both intra and inter projection device color correction while simplifying the correction procedure.
Abstract translation: 提供了一种用于校正图像投影装置的颜色的装置和方法。 该方法包括：通过拍摄投影在投影面上的样本图像来获取拍摄图像; 基于样本图像中的块的颜色值和所拍摄图像中的块的对应颜色值，生成n个区域的输入输出颜色信息; 选择拍摄图像的n个区域中的一个作为参考区域; 基于参考区域和输入和输出颜色信息产生用于非参考区域的查找表（LUT）; 并且通过使用查找表来校正由图像投影设备投影的输入图像的颜色，从而使简化校正过程的同时投影设备颜色校正的投影面上的输入图像的色差最小化。
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2.发明授权公开(公告)号：US10558881B2
公开(公告)日：2020-02-11
申请号：US15662616
申请日：2017-07-28
Inventor： Yong Ju Cho , Soon-heung Jung , Hyun Cheol Kim , Jeongil Seo , Joo Myoung Seok , Sangwoo Ahn , Seung Jun Yang , Injae Lee , Hee Kyung Lee , Seong Yong Lim
IPC: G06K9/36 , G06K9/20 , H04N9/097 , G06T3/00 , H04N13/225 , G06K9/00 , H04N5/262 , H04N5/232 , G06T3/40 , H04N13/239 , H04N13/00
Abstract: Provided is a parallax minimization stitching method and apparatus using control points in an overlapping region. A parallax minimization stitching method may include defining a plurality of control points in an overlapping region of a first image and a second image received from a plurality of cameras, performing a first geometric correction by applying a homography to the control points, defining a plurality of patches based on the control points, and performing a second geometric correction by mapping the patches.
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公开(公告)号：US09628767B2
公开(公告)日：2017-04-18
申请号：US14323509
申请日：2014-07-03
Inventor： Yong Ju Cho , Sang Woo Ahn , Joo Myoung Seok , Seong Yong Lim , Ji Hun Cha
CPC classification number: H04N9/3194 , G03B21/147 , H04N9/3147 , H04N9/3182
Abstract: The present specification is related to a method for performing multi-projection and a multi-projection system for minimizing a black offset in a multi-projection environment. The present specification provides the method for performing multi-projection comprising estimating the intensity transfer function (ITF) of a plurality of projectors, calculating an optimal black offset threshold for each of the projectors by using each of the ITFs, and applying the optimal black offset threshold to an image projection by each of the projectors.
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公开(公告)号：US10692262B2
公开(公告)日：2020-06-23
申请号：US15868534
申请日：2018-01-11
Inventor： Seong Yong Lim , Yong Ju Cho , Jeong Il Seo , Joo Myoung Seok
Abstract: Disclosed is an apparatus and method for processing information of multiple cameras. The apparatus for processing information of multiple cameras according to an embodiment of the present disclosure includes: multiple cameras obtaining an image containing at least one object; a location information identification unit identifying location information between the at least one object and one of the multiple cameras, the location information identification unit being provided in each of the multiple cameras, wherein the location information comprises a device identifier identifying the location information identification unit and a location data between the at least one object and one of the multiple cameras; and an image processor processing image information obtained from the multiple cameras by using the location information received from the location information identification unit and converting the device identifier received from the location information identification unit into an object identifier identifying the at least one object.
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公开(公告)号：US10122778B2
公开(公告)日：2018-11-06
申请号：US15488224
申请日：2017-04-14
Inventor： Seong Yong Lim , Joo Myoung Seok , Sang Woo Ahn , Yong Ju Cho , Ji Hun Cha
IPC: H04L29/06
Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
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Patent Agency Ranking
公开(公告)号：US10075635B2
公开(公告)日：2018-09-11
申请号：US14994430
申请日：2016-01-13
Inventor： Joo Myoung Seok , Sang Woo Ahn , Yong Ju Cho , Ji Hun Cha
CPC classification number: H04N5/23238 , G06T3/4038
Abstract: Disclosed are a method and an apparatus for generating a panoramic image based on an image quality. The method of generating a panoramic image includes extracting a matching point to connect a base image captured by a first camera and a reference image captured by a second camera, geometrically transforming the reference image by determining a homography between the base image and the reference image, determining a change in image quality of the geometrically transformed reference image, and generating a panoramic image in which the geometrically transformed reference image is connected to the base image based on the determined change in image quality.
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7.发明授权公开(公告)号：US09842273B2
公开(公告)日：2017-12-12
申请号：US15064800
申请日：2016-03-09
Inventor： Yong Ju Cho , Unsang Park , Joo Myoung Seok , Sang Woo Ahn , Ji Hun Cha
IPC: G06K9/46
CPC classification number: G06K9/4671
Abstract: Provided is an apparatus and method for detecting a key point using a high-order Laplacian of Gaussian (LoG) kernel. The high-order LoG kernel is generated based on an LoG operator which is calculated by sequentially differentiating an LoG operator with respect to x and y of an image. A scale space is generated based on the high-order LoG kernel and the key point is detected by comparing a current pixel in the scale space to pixels adjacent to the current pixel.
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公开(公告)号：US09870601B2
公开(公告)日：2018-01-16
申请号：US15089993
申请日：2016-04-04
Applicant: Electronics and Telecommunications Research Institute , National University of Sciences & Technology
Inventor： Yong Ju Cho , Joo Myoung Seok , Sang Woo Ahn , Ji Hun Cha , Arshad Ali , Muhammad Murtaza , Rehan Hafiz , Ashar Rasul , Saleh Saeed , Muhammad Umer Kakli
CPC classification number: G06T3/4038 , G06T7/33 , G06T7/38 , G06T2207/10016
Abstract: An apparatus and a method for displaying a panoramic image using a look-up table (LUT) are disclosed, including generating an LUT may include determining first geometric correction information to transform an input domain pixel coordinate system of an input image to a panorama domain pixel coordinate system of a panoramic image, determining second geometric correction information to transform an output domain pixel coordinate system of an output image of the panoramic image to the panorama domain pixel coordinate system of the panoramic image, determining third geometric correction information to transform the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image based on the first geometric correction information and second geometric correction information, and generating an LUT that maps the output domain pixel coordinate system of the output image to the input domain pixel coordinate system of the input image.
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公开(公告)号：US09628528B2
公开(公告)日：2017-04-18
申请号：US14333892
申请日：2014-07-17
Inventor： Seong Yong Lim , Joo Myoung Seok , Sang Woo Ahn , Yong Ju Cho , Ji Hun Cha
IPC: H04L29/06
CPC classification number: H04L65/4084 , H04L65/4092 , H04L65/601 , H04L65/608
Abstract: A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request.
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10.发明授权公开(公告)号：US08914817B2
公开(公告)日：2014-12-16
申请号：US13713083
申请日：2012-12-13
Inventor： Joo Myoung Seok , Ji Hun Cha
IPC: H04H60/33 , H04N5/76 , H04N5/783 , H04N9/79 , H04N21/442 , H04N21/6587 , H04N5/765
CPC classification number: H04N5/76 , G06F3/013 , H04N5/765 , H04N5/783 , H04N9/7921 , H04N21/44218 , H04N21/6587
Abstract: A progressive video streaming apparatus and method based on a visual perception are provided, and the progressive video streaming apparatus may include a gaze detector to detect gaze information including at least one of a location of a focus and a viewing angle of a user, a video playback quality determiner to determine video playback quality layers, based on the detected gaze information, a progressive streaming receiver to request video data and receive the video data, using a visual perception priority based on the detected gaze information, and a visual perception-based player to play back the received video data, by controlling an interactive delay to be reduced below a selected criterion, while reducing a visually recognized quality change in the received video data below another selected criterion.
Abstract translation: 提供了一种基于视觉感知的逐行视频流式传输设备和方法，并且逐行视频流传输设备可以包括注视检测器，用于检测凝视信息，其包括用户的焦点位置和视角中的至少一个，视频 播放质量确定器，基于检测到的注视信息来确定视频播放质量层，使用基于检测到的注视信息的视觉感知优先级来请求视频数据和接收视频数据的逐行流式接收器，以及基于视觉感知的播放器 通过将交互式延迟降低到低于所选择的标准，同时将所接收的视频数据中的视觉识别的质量变化降低到低于另一个选择的标准，来播放所接收的视频数据。
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