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1. 发明申请

WO2020243906A1 METHOD, DEVICE, AND STORAGE MEDIUM FOR ENCODING VIDEO DATA BASE ON REGIONS OF INTERESTS 审中-公开
公开(公告)号：WO2020243906A1
公开(公告)日：2020-12-10
申请号：PCT/CN2019/089989
申请日：2019-06-04
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHU, Lei , ZHAO, Wenjun , SU, Wenyi , ZHAO, Liang
IPC分类号： H04N19/103
摘要： An unmanned aerial vehicle comprises a body coupled with a plurality of propulsion systems and an imaging device; an encoder that encodes video data generated by the imaging device, and a wireless communication system for transmitting the encoded video data. The encoder includes a ROI control module that determines, within an image frame of the video data, a first region and a second region, the ROI control module further setting a first limit indicating a maximum value of quantization parameters for encoding each macroblock within the first region, a second limit indicating a maximum size of the first region, and a third limit indicating a minimum size of the second region. The encoder further includes a ROI monitoring module coupled to the ROI control module that estimates a first image quality of the first region and a second image quality of a second region, and the ROI control module adjusts a size of the first region and the second region according to the first image quality and the second image quality. The present application also relates to an encoding method as embodied in the encoder.

2. 发明申请

WO2019104862A1 SYSTEM AND METHOD FOR REDUCING VIDEO CODING FLUCTUATION 审中-公开
公开(公告)号：WO2019104862A1
公开(公告)日：2019-06-06
申请号：PCT/CN2018/074568
申请日：2018-01-30
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHAO, Liang , SU, Wenyi , ZHU, Lei
IPC分类号： H04N7/24
摘要： System and method can support video coding. A video encoder can obtain an image frame, wherein the image frame comprises a plurality of coding block groups, each of which comprises one or more coding blocks such as one or more macroblocks. The video encoder can use one or more coding control models to estimate a plurality of coding parameters such as a plurality of quantization parameters, wherein each coding parameter corresponds to a coding block group in the image frame. Furthermore, the video encoder can determine one or more effective coding parameters based on an evaluation of the plurality of coding parameters and use the one or more effective coding parameters to encode the plurality of coding block groups in the image frame.

3. 发明申请

WO2019104635A1 SYSTEM AND METHOD FOR CONTROLLING VIDEO CODING AT FRAME LEVEL 审中-公开
公开(公告)号：WO2019104635A1
公开(公告)日：2019-06-06
申请号：PCT/CN2017/113926
申请日：2017-11-30
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHAO, Liang , SU, Wenyi , ZHU, Lei
IPC分类号： H04N19/00
摘要： System and method can control video coding. A video encoder can obtain a target rate to encode an image data unit such as an image frame, wherein the image data unit is to be encoded based on a rate control model with one or more model parameters. The video encoder can determine values of the one or more model parameters for the rate control model based on an encoding of one or more reference image data units using one or more reference coding parameters. Then, the video encoder can determine values of one or more coding parameters for encoding the image data unit, based on the rate control model with the one or more determined model parameters, and use the one or more determined coding parameters to encode the image data unit.

4. 发明申请

WO2022126598A1 SYSTEMS AND STRUCTURES OF UNMANNED AERIAL VEHICLES 审中-公开
公开(公告)号：WO2022126598A1
公开(公告)日：2022-06-23
申请号：PCT/CN2020/137610
申请日：2020-12-18
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： QIAN, Jie , YAN, Shaojun , ZHU, Lei
IPC分类号： H04N5/225 , B64C39/02
摘要： A system of an unmanned aerial vehicle (UAV) includes a first body of the UAV capable of flying, a second body detachably attached to the first body and capable of being a stabilizer, and a power storage system capable of powering the first body and the second body. The system further includes one or more sensors, at least one processor, and at least one storage medium storing instructions. When executed, the instructions in the at least one storage medium configure the processor to receive sensor data from the one or more sensors.

5. 发明申请

WO2019148320A1 VIDEO DATA ENCODING 审中-公开
公开(公告)号：WO2019148320A1
公开(公告)日：2019-08-08
申请号：PCT/CN2018/074567
申请日：2018-01-30
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHU, Lei
IPC分类号： H04N19/50 , H04N19/176
摘要： A method of encoding video data includes inter-coding a block of an image frame to generate an inter-coded block, reconstructing the inter-coded block to generate a reconstructed block, and intra-coding the reconstructed block to generate a double-coded block.

6. 发明申请

WO2018121775A1 SYSTEM AND METHODS FOR FEEDBACK-BASED DATA TRANSMISSION 审中-公开
公开(公告)号：WO2018121775A1
公开(公告)日：2018-07-05
申请号：PCT/CN2017/120225
申请日：2017-12-29
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHAO, Liang , SU, Wenyi , YU, Qingdong , XIAO, Wei , ZHU, Lei , GONG, Ming , MA, Ning , FAN, Wei , CUI, Hao
IPC分类号： H04N19/65
摘要： Techniques are provided for low-latency data transmission. A receiver of data can be configured to determine a receiving status with respect to the receiver, generate feedback information based at least in part on the receiving status, and transmit the feedback information to a transmitter. The transmitter can be configured to receive, from the receiver, a feedback message comprising the feedback information, obtain a current frame to be encoded, encode the current frame based at least in part on the feedback information, and transmit the encoded current frame to the receiver.

7. 发明申请

WO2016191915A1 SYSTEM AND METHOD FOR VIDEO PROCESSING 审中-公开
标题翻译：视频处理系统与方法
公开(公告)号：WO2016191915A1
公开(公告)日：2016-12-08
申请号：PCT/CN2015/080230
申请日：2015-05-29
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： CHEN, Xing , CAO, Zisheng , ZHU, Lei
IPC分类号： H04N19/50
CPC分类号： H04N19/91 , H04N19/105 , H04N19/13 , H04N19/503
摘要： A system for processing a video and methods for making and using the same. The system can obtain a prediction table for a reference frame of the video and code one or more target frames of the video based on the prediction table. The prediction table can be a Huffman table of a difference value for each reference pixel of the reference frame. The difference value is determined based on an actual value of the reference pixel and a prediction value that can be determined based on respective pixel values of one or more pixels adjacent to the reference pixel. The target frames can be coded based on the Huffman table of the reference frame and prediction values of the target frames. The system advantageously does not need to save a whole frame during a course of encoding and, therefore, can save valuable memory space for video processing.
摘要翻译：用于处理视频的系统及其制作和使用方法。该系统可以获得视频的参考帧的预测表，并根据预测表对视频的一个或多个目标帧进行编码。预测表可以是参考帧的每个参考像素的差值的霍夫曼表。基于参考像素的实际值和可以基于与参考像素相邻的一个或多个像素的各个像素值确定的预测值来确定差值。可以基于参考帧的霍夫曼表和目标帧的预测值对目标帧进行编码。该系统有利地不需要在编码过程中保存整个帧，并且因此可以节省用于视频处理的宝贵的存储空间。

8. 发明申请

WO2019153351A1 IMAGE PROCESSING 审中-公开
公开(公告)号：WO2019153351A1
公开(公告)日：2019-08-15
申请号：PCT/CN2018/076530
申请日：2018-02-12
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： MA, Ning , ZHU, Lei , CHEN, Ying
IPC分类号： H04L1/00
摘要： An image processing method includes generating a reference frame by changing a resolution of a reconstructed first frame, inter-encoding a second frame using the reference frame, and generating resolution change information useful for decoding the encoded second frame.

9. 发明申请

WO2018133734A1 RATE CONTROL 审中-公开
公开(公告)号：WO2018133734A1
公开(公告)日：2018-07-26
申请号：PCT/CN2018/072444
申请日：2018-01-12
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHU, Lei
IPC分类号： H04N19/124 , H04N19/00
摘要： A method for rate control includes encoding a first input frame using a first plurality of coding parameter values to generate a first plurality of encoded data streams, each of the first plurality of encoded data streams being generated using a corresponding coding parameter value of the first plurality of coding parameter values and each of the first plurality of encoded data streams having a corresponding bitrate of a first plurality of bitrate values, updating a rate control model representing a correspondence between coding parameter and bitrate based on the first plurality of coding parameter values and the first plurality of bitrate values respectively corresponding to the first plurality of encoded data streams, and encoding a second input frame based on the updated rate control model.

10. 发明申请

WO2019205129A1 MOTION ESTIMATION 审中-公开
公开(公告)号：WO2019205129A1
公开(公告)日：2019-10-31
申请号：PCT/CN2018/085063
申请日：2018-04-28
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： ZHU, Lei
IPC分类号： H04N5/232
摘要： A motion estimation method includes calculating a global camera motion vector for a region of an image frame, calculating a global estimated motion vector for the region of the image frame, and determining a global motion vector for the region based on the global camera motion vector and the global estimated motion vector.

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