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公开(公告)号：US20210303875A1
公开(公告)日：2021-09-30
申请号：US16833759
申请日：2020-03-30
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Naveen Kumar BANGALORE RAMAIAH , Subrata Kumar KUNDU
Abstract: In some examples, one or more processors may receive at least one image of a road, and may determine at least one candidate group of pixels in the image as potentially corresponding to debris on the road. The one or more processors may determine at least two height-based features for the candidate group of pixels. For instance, the at least two height-based features may include a maximum height associated with the candidate group of pixels relative to a surface of the road, and an average height associated the candidate group of pixels relative to the surface of the road. In addition, the one or more processors may determine at least one weighting factor based on comparing the at least two height-based features to respective thresholds, and may determine whether the group of pixels corresponds to debris based at least on the comparing.
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公开(公告)号：US20200250984A1
公开(公告)日：2020-08-06
申请号：US16265913
申请日：2019-02-01
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Subrata Kumar KUNDU , Naveen Kumar BANGALORE RAMAIAH
Abstract: Example implementations described herein are directed to depression detection on roadways (e.g., potholes, horizontal panel lines of a roadway, etc.) through using vision sensor to realize improved safety for advanced driver assistance systems (ADAS) and autonomous driving (AD). Example implementations described herein detect candidate depressions in the roadway in real time and adjust the control of the vehicle system according to the detected depressions.
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公开(公告)号：US20200211226A1
公开(公告)日：2020-07-02
申请号：US16643715
申请日：2017-09-26
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Subrata Kumar KUNDU
Abstract: In some examples, processor(s) of a vehicle may store specified dimensions of a plurality of first objects. The processor(s) may receive a first image from a camera onboard the vehicle, recognize a first object within the image, and determine, based on the first image, a distance to the first object from the camera, and a width and height of the first object. Further, the processor(s) may determine a first measurement error from the determined width of the first object and a specified width of the first object, and a second measurement error from the determined height of the first object and the specified height of the first object. Based on the first and second measurement error, the processor(s) may determine a third measurement error, may determine one or more calibration parameters of the camera based on the determined measurement errors, and may use the calibration parameters for subsequently received images.
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公开(公告)号：US20190272435A1
公开(公告)日：2019-09-05
申请号：US16345321
申请日：2016-12-16
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Subrata Kumar KUNDU
IPC: G06K9/00
Abstract: In some examples, one or more processors of a vehicle may store, in a computer-readable medium, sign information relating a sign type of a traffic sign to a distance to a road edge for a plurality of sign types. The one or more processors may receive at least one image from at least one sensor, and may recognize a sign type of a traffic sign in the at least one image. Further, the one or more processors may determine a likely location of a road edge in relation to the vehicle based at least partially on the recognized sign type and the stored sign information. In some examples, the one or more processors may send one or more control signals to at least one component of the vehicle based on the determined likely location of the road edge relative to the vehicle.
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