公开(公告)号：US20140285621A1

公开(公告)日：2014-09-25

申请号：US14221229

申请日：2014-03-20

Applicant: MEDIATEK INC.

Inventor： Chia-Ming Cheng ,  Po-Hao Huang ,  Yuan-Chung Lee ,  Chung-Hung Tsai ,  Chi-Cheng Ju ,  Ding-Yun Chen ,  Cheng-Tsai Ho

IPC: H04N13/00

CPC classification number: H04N13/111 ,  H04N13/106 ,  H04N13/243 ,  H04N13/282

Abstract: A video frame processing method, which comprises: (a) capturing at least two video frames via a multi-view camera system comprising a plurality of cameras; (b) recording timestamps for each the video frame; (c) determining a major camera and a first sub camera out of the multi-view camera system, based on the timestamps, wherein the major camera captures a major video sequence comprising at least one major video frame, the first sub camera captures a video sequence of first view comprising at least one video frame of first view; (d) generating a first reference video frame of first view according to one first reference major video frame of the major video frames, which is at a reference timestamp corresponding to the first reference video frame of first view, and according to at least one the video frame of first view surrounding the reference timestamp; and (e) generating a multi-view video sequence comprising a first multi-view video frame, wherein the first multi-view video frame is generated based on the first reference video frame of first view and the first reference major video frame.

Abstract translation: 一种视频帧处理方法，包括：（a）经由包括多个相机的多视点相机系统捕获至少两个视频帧; （b）记录每个视频帧的时间戳; （c）基于所述时间戳来确定所述多视点相机系统中的主要相机和第一子相机，其中所述主要相机捕获包括至少一个主要视频帧的主要视频序列，所述第一子摄像机捕获视频 第一视图的序列包括至少一个第一视图的视频帧; （d）根据主要视频帧的一个第一参考主视频帧生成第一参考视频帧，该第一参考视频帧处于与第一视图的第一参考视频帧对应的参考时间戳，并且根据至少一个 围绕参考时间戳的第一视图的视频帧; 以及（e）生成包括第一多视点视频帧的多视点视频序列，其中基于第一视图的第一参考视频帧和第一参考主视频帧生成第一多视点视频帧。

公开(公告)号：US11792352B2

公开(公告)日：2023-10-17

申请号：US17588128

申请日：2022-01-28

Applicant: MediaTek Inc.

Inventor： Yuan-Chung Lee

IPC: H04N5/265 ,  G06T7/55 ,  H04N7/01 ,  H04N23/90

CPC classification number: H04N5/265 ,  G06T7/55 ,  H04N7/0117 ,  H04N7/0127 ,  H04N23/90

Abstract: Various examples pertaining to camera view synthesis on head-mounted display (HMD) for virtual reality (VR) and augmented reality (AR) are described. A method involves receiving, from a plurality of tracking cameras disposed around a HMD, image data of a scene which is on a first side of the HMD. The method also involves performing, using the image data and depth information pertaining to the scene, view synthesis to generate a see-through effect of viewing the scene from a viewing position on a second side of the HMD opposite the first side thereof.

公开(公告)号：US10033989B2

公开(公告)日：2018-07-24

申请号：US14322925

申请日：2014-07-03

Applicant: MEDIATEK INC.

Inventor： Tung-Hai Wu ,  Wei-Cheng Ku ,  Chung-Hung Tsai ,  Yuan-Chung Lee

IPC: H04N13/00 ,  H04N13/02

Abstract: A synchronization controller for a multi-sensor camera device includes a detection circuit and a control circuit. The detection circuit detects asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles. The control circuit controls an operation of the multi-sensor camera device in response to the asynchronization detected by the detection circuit. In addition, a synchronization method applied to a multi-sensor camera device includes following steps: detecting asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles; and controlling an operation of the multi-sensor camera device in response to the detected asynchronization.

公开(公告)号：US20180146182A1

公开(公告)日：2018-05-24

申请号：US15874243

申请日：2018-01-18

Applicant: MEDIATEK INC.

Inventor： Chi-Cheng JU ,  Ding-Yun Chen ,  Cheng-Tsai Ho ,  Chia-Ming Cheng ,  Po-Hao Huang ,  Yuan-Chung Lee ,  Chung-Hung Tsai

IPC: H04N13/00

CPC classification number: H04N13/111 ,  H04N13/106 ,  H04N13/243 ,  H04N13/282

Abstract: A video frame processing method, which comprises: (a) capturing at least one first video flame via a first camera; (b) capturing at least one second video frame via a second camera; and (c) adjusting one candidate second video frame of the second video frames based on one of the first video frame to generate a target single view video frame.

公开(公告)号：US09912929B2

公开(公告)日：2018-03-06

申请号：US14221260

申请日：2014-03-20

Applicant: MEDIATEK INC.

Inventor： Chi-Cheng Ju ,  Ding-Yun Chen ,  Cheng-Tsai Ho ,  Chia-Ming Cheng ,  Po-Hao Huang ,  Yuan-Chung Lee ,  Chung-Hung Tsai

IPC: H04N13/02 ,  H04N13/00

CPC classification number: H04N13/111 ,  H04N13/106 ,  H04N13/243 ,  H04N13/282

Abstract: A video frame processing method, which comprises: (a) capturing at least one first video frame via a first camera; (b) capturing at least one second video frame via a second camera; and (c) adjusting one candidate second video frame of the second video frames based on one of the first video frame to generate a target single view video frame.

公开(公告)号：US09838672B2

公开(公告)日：2017-12-05

申请号：US14272491

申请日：2014-05-07

Applicant: MEDIATEK INC.

Inventor： Chia-Ming Cheng ,  Po-Hao Huang ,  Yuan-Chung Lee

IPC: H04N13/04 ,  H04N5/14 ,  H04N13/00

CPC classification number: H04N13/302 ,  H04N5/144 ,  H04N13/128 ,  H04N2013/0081 ,  H04N2013/0085

Abstract: A stereo preview apparatus has an auto-stereoscopic display, an input interface, a motion detection circuit, and a visual transition circuit. The input interface receives at least an input stereo image pair including a left-view image and a right-view image generated from an image capture device. The motion detection circuit evaluates a motion status of the image capture device. The visual transition circuit generates an output stereo image pair based on the input stereo image pair, and outputs the output stereo image pair to the auto-stereoscopic display for stereo preview, wherein the visual transition circuit refers to the evaluated motion status to configure adjustment made to the input stereo image pair when generating the output stereo image pair.

公开(公告)号：US20150009288A1

公开(公告)日：2015-01-08

申请号：US14322925

申请日：2014-07-03

Applicant: MEDIATEK INC.

Inventor： Tung-Hai Wu ,  Wei-Cheng Ku ,  Chung-Hung Tsai ,  Yuan-Chung Lee

IPC: H04N13/02

CPC classification number: H04N13/296 ,  H04N13/239 ,  H04N13/25

Abstract: A synchronization controller for a multi-sensor camera device includes a detection circuit and a control circuit. The detection circuit detects asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles. The control circuit controls an operation of the multi-sensor camera device in response to the asynchronization detected by the detection circuit. In addition, a synchronization method applied to a multi-sensor camera device includes following steps: detecting asynchronization between image outputs generated from the multi-sensor camera device, wherein the image outputs correspond to different viewing angles; and controlling an operation of the multi-sensor camera device in response to the detected asynchronization.

Abstract translation: 用于多传感器相机装置的同步控制器包括检测电路和控制电路。 检测电路检测从多传感器相机装置产生的图像输出之间的异步，其中图像输出对应于不同的视角。 响应于由检测电路检测到的异步，控制电路控制多传感器相机装置的操作。 此外，应用于多传感器相机装置的同步方法包括以下步骤：检测从多传感器相机装置产生的图像输出之间的异步，其中图像输出对应于不同的视角; 以及响应于检测到的异步而控制多传感器相机设备的操作。

公开(公告)号：US20140253785A1

公开(公告)日：2014-09-11

申请号：US13788311

申请日：2013-03-07

Applicant: MEDIATEK INC.

Inventor： Wei-Kai Chan ,  Yuan-Chung Lee ,  Chen-Hung Chan

IPC: H04N5/232

CPC classification number: H04N5/23212 ,  G03B13/18 ,  H04N5/144 ,  H04N5/232

Abstract: A method and apparatus of auto focusing for a camera based on analysis of the image content in a target window are disclosed. According to the present invention, image content in a target window is analyzed to determine a state, a state change or both associated with the target window. The information associated with the state, the state change or both is provided to update the camera parameters. The state may be size, position, pose, behavior or gesture of one or more objects, or areas associated with one or more regions in the target window. The state may correspond to the motion field or optical flow associated with the target window. The state may correspond to object motion, extracted features or scales of the objects in the target window. The state may correspond to image content description of the segmented regions or deformable object contour in the target window.

Abstract translation: 公开了一种基于目标窗口中的图像内容的分析的摄像机的自动对焦的方法和装置。 根据本发明，分析目标窗口中的图像内容以确定与目标窗口相关联的状态，状态改变或两者。 提供与状态相关的信息，状态改变或二者相关的信息来更新相机参数。 状态可以是与目标窗口中的一个或多个区域相关联的一个或多个对象或区域的大小，位置，姿势，行为或手势。 该状态可以对应于与目标窗口相关联的运动场或光流。 该状态可以对应于目标窗口中的对象运动，提取的特征或对象的尺度。 该状态可以对应于目标窗口中的分割区域或可变形对象轮廓的图像内容描述。