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公开(公告)号：US12222217B2
公开(公告)日：2025-02-11
申请号：US17930503
申请日：2022-09-08
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Fan Bai , Gui Chen , Joon Hwang , Carl P. Darukhanavala , Vivek Vijaya Kumar , Shu Chen , Donald K. Grimm
Abstract: A method of creating a high-definition (HD) map of a roadway includes receiving a multi-layer probability density bitmap. The multi-layer probability density bitmap represents a plurality of lane lines of the roadway sensed by a plurality of sensors of a plurality of vehicles. The multi-layer probability density bitmap includes a plurality of points. The method further includes recursively conducting a hill climbing search using the multi-layer probability density bitmap to create a plurality of lines. In addition, the method includes creating the HD map of the roadway using the plurality of lines determined by the hill climbing search.
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公开(公告)号：US20240280376A1
公开(公告)日：2024-08-22
申请号：US18171848
申请日：2023-02-21
Applicant: GM Global Technology Operations LLC
Inventor： Gui Chen , Bo Yu , Brent Navin Roger Bacchus , Shu Chen , Joon Hwang , Michael Alan Losh
CPC classification number: G01C21/3881 , G01C21/32 , G01C21/3815 , G06T7/38 , G06T17/005 , G06T17/05 , G06T2207/10028
Abstract: A method for quantifying map errors includes receiving first map data and second map data. The method includes receiving a road topographic map. The method further includes dividing the road into road segments. The method further includes creating a plurality of bounding boxes for each of the plurality of road segments. The method includes creating a first map tile and a second map tile by filtering out the bounding boxes. The method includes executing point cloud registration to align the plurality of first data points in the first map tile with the plurality of second data points in the second map tile to determine a plurality of absolute offsets between the plurality of first data points and the plurality of second data points. The method includes determining a relative map error between the first map and the second map based on the absolute offsets.
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公开(公告)号：US20240085210A1
公开(公告)日：2024-03-14
申请号：US17930503
申请日：2022-09-08
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Fan Bai , Gui Chen , Joon Hwang , Carl P. Darukhanavala , Vivek Vijaya Kumar , Shu Chen , Donald K. Grimm
IPC: G01C21/00
CPC classification number: G01C21/3822 , G01C21/3841 , G01C21/3867
Abstract: A method of creating a high-definition (HD) map of a roadway includes receiving a multi-layer probability density bitmap. The multi-layer probability density bitmap represents a plurality of lane lines of the roadway sensed by a plurality of sensors of a plurality of vehicles. The multi-layer probability density bitmap includes a plurality of points. The method further includes recursively conducting a hill climbing search using the multi-layer probability density bitmap to create a plurality of lines. In addition, the method includes creating the HD map of the roadway using the plurality of lines determined by the hill climbing search.
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公开(公告)号：US20240068836A1
公开(公告)日：2024-02-29
申请号：US17821898
申请日：2022-08-24
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Joon Hwang , Gui Chen , Carl P. Darukhanavala , Vivek Vijaya Kumar , Shu Chen , Donald K. Grimm , Fan Bai
IPC: G01C21/00
CPC classification number: G01C21/3822 , G01C21/3841 , G01C21/3878
Abstract: A method includes receiving sensor data from a plurality of sensors of a plurality of vehicles. The sensor data includes vehicle GPS data and sensed lane line data of the roadway. The method further includes creating a plurality of multi-layer bitmaps for each of the plurality of vehicles using the sensor data, fusing the plurality of the multi-layer bitmaps of each of the plurality of vehicles to create a fused multi-layer bitmap, creating a plurality of multi-layer probability density bitmaps using the fused multi-layer bitmap, extracting lane line data from the plurality of multi-layer probability density bitmaps, and creating the high-definition (HD) map of the roadway using the multi-layer probability density bitmaps and the lane line data extracted from the plurality of multi-layer probability density bitmaps.
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公开(公告)号：US20230275598A1
公开(公告)日：2023-08-31
申请号：US17680758
申请日：2022-02-25
Applicant: GM Global Technology Operations LLC
Inventor： Shu Chen , Jinzhu Chen , Donald K. Grimm , Mahesh Pottelu
IPC: G06F16/2455 , H03M7/30
CPC classification number: G06F16/24561 , H03M7/70 , H03M7/6064
Abstract: A system comprises a computer including a processor and a memory. The memory includes instructions such that the processor is programmed to: receive metadata and results including at least one data transmission constraint, perform a search of a k-d tree based on the at least one data transmission constraint, and select at least one data compression process from the k-d tree based on the search. The k-d tree includes a plurality of nodes corresponding to data compression solutions.
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Patent Agency Ranking
公开(公告)号：US11127292B2
公开(公告)日：2021-09-21
申请号：US16251669
申请日：2019-01-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Fan Bai , Shu Chen , Donald K. Grimm , Jinzhu Chen , Bo Yu , David E. Bojanowski
IPC: G08G1/0967 , G08G1/01 , G05D1/00 , G05D1/02
Abstract: Methods and apparatus are provided for controlling a vehicle. In one embodiment, a method includes: receiving, by a processor, vehicle position data from the vehicle; processing, by the processor, vehicle position data with vehicle position data from other vehicles to determine a lane topology; processing, by the processor, the vehicle position data to determine traffic conditions within a lane of the lane topology; generating, by the processor, a map for controlling the vehicle based on the lane topology and the traffic conditions.
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公开(公告)号：US12270918B2
公开(公告)日：2025-04-08
申请号：US17933895
申请日：2022-09-21
Applicant: GM Global Technology Operations LLC
Inventor： Gui Chen , Shu Chen , Bo Yu , Joon Hwang , Carl P. Darukhanavala , Vivek Vijaya Kumar
Abstract: A global positioning system (GPS)-bias detection and reduction system including a GPS-bias model having GPS statistical data creating a database representing data collected from a vehicle group having thousands or multiple thousands of vehicles saved in a database. At least one newly collected vehicle GPS data point is compared to the GPS statistical data to reduce negative effects of GPS-bias and to update the vehicle GPS-bias correction based on a previous GPS-bias model. A selected road node and a segment of a roadway have a map matching performed using a nearest service from a collection location of the GPS statistical data. A GPS-bias is calculated using a look-up of the database. An estimated horizontal position error (EHPE) defining a quality indicator is applied to distinguish a good quality GPS statistical data from a poor quality GPS statistical data.
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公开(公告)号：US12113555B2
公开(公告)日：2024-10-08
申请号：US17680758
申请日：2022-02-25
Applicant: GM Global Technology Operations LLC
Inventor： Shu Chen , Jinzhu Chen , Donald K. Grimm , Mahesh Pottelu
IPC: G06F16/2455 , H03M7/30
CPC classification number: H03M7/70 , G06F16/2455 , H03M7/6064
Abstract: A system comprises a computer including a processor and a memory. The memory includes instructions such that the processor is programmed to: receive metadata and results including at least one data transmission constraint, perform a search of a k-d tree based on the at least one data transmission constraint, and select at least one data compression process from the k-d tree based on the search. The k-d tree includes a plurality of nodes corresponding to data compression solutions.
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19.发明公开公开(公告)号：US20240125616A1
公开(公告)日：2024-04-18
申请号：US18045306
申请日：2022-10-10
Applicant: GM Global Technology Operations LLC
Inventor： Bo Yu , Joon Hwang , Carl P. Darukhanavala , Shu Chen , Vivek Vijaya Kumar , Donald K. Grimm , Fan Bai
IPC: G01C21/00
CPC classification number: G01C21/3819 , G01C21/387 , G01C21/3889
Abstract: A method of correcting a GPS vehicle trajectory of a vehicle on a roadway for a high-definition map is provided. The method comprises receiving first bitmap data from a first sensor of a first vehicle to create a plurality of first multi-layer bitmaps for the first vehicle using the first bitmap data and receiving second bitmap data from a plurality of second sensors of a plurality of second vehicles to create a plurality of second multi-layer bitmaps. The method further comprises creating first probability density bitmaps and an overall probability density bitmap with a probability density estimation, and matching an image template from each of the first probability density bitmaps with the overall probability density bitmap to define match results. The method further comprises combining the match results to define combined utility values and determining the maximal utility value with the combined utility values.
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公开(公告)号：US11737004B2
公开(公告)日：2023-08-22
申请号：US17332806
申请日：2021-05-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jinzhu Chen , Lakshmi V. Thanayankizil , Shu Chen , Chuan Li , Donald K. Grimm
Abstract: Systems and method are provided for transmitting data from a vehicle using a Wi-Fi network. A method includes: collecting, by a processor, performance data associated with a plurality of access points in the Wi-Fi network; segmenting, by a processor, a route into a plurality of route segments; mapping, by a processor, the plurality of access points to the plurality of route segments; selecting, by a processor, a set of access points from the plurality of access points based on the collected performance data, wherein the set of access points comprises a selected access point for each route segment of the plurality of route segments; predicting, by a processor, a scanning channel based on the set of access points and a current location of the vehicle; and selectively transmitting, by a processor, packet data based on the set of access points, the scanning channel, and the associated performance data.
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