JP6270064B2 - 交通信号とそれらに関連した状態を検出するためのロバスト法 - Google Patents
交通信号とそれらに関連した状態を検出するためのロバスト法 Download PDFInfo
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- G05D1/02—Control of position or course in two dimensions
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- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
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- B60W2554/00—Input parameters relating to objects
- B60W2554/20—Static objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W2555/60—Traffic rules, e.g. speed limits or right of way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
- B60W2556/50—External transmission of data to or from the vehicle of positioning data, e.g. GPS [Global Positioning System] data
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Description
背景
概要
その指令は更に、交通信号の状態及び交通信号に対する信頼性に基づいて自律型モードで車両を制御するために実行可能である場合がある。
或る例においては、車両は自律型モードで操作されるように構成し得る。図6及び7に関して説明される車両は、自律的に操作されるように構成された車両のそのような一例である。或る例においては、交通信号の状態及び位置に基づいて決定された制御コマンドは、車両の運転者を支援するのに用いられ得るか、又は、車両の制御システムへの入力として提供し得る。
更に、カメラは対象の特定の領域、例えば、30度視野の固定レンズを有するカメラの2040x1080領域を撮り得る。カメラは、妥当なブレーキ距離を確実にするために、様々な距離における交通信号を検出するように校正し得る。
更なる例においては、カメラのゲインとシャッター速度は、日中及び/又は夜間の交通信号灯の飽和を避けるように設定し得る。
方法100の幾つかの例示的実施例について、図2A−図5Cに関連して以下に説明する。
車両700は、例えば、図6に関連して上述した車両600に類似している場合がある。車両700は、同様に他の形態を採り得る。
一つ又は複数のエネルギー源720は、これに加えて又はこれに代えて、燃料タンク、バッテリ、キャパシタ、及び/又はフライホイールの任意の組合せを含むことができる。或る実施形態においては、エネルギー源720は同様に車両700の他のシステムにエネルギーを提供し得る。
Claims (15)
- 方法であって、
目標領域情報を得るために車両の一つ以上のセンサを用いて目標領域を走査し、その車両は自律型モードで操作されるように構成されており、
前記目標領域情報において交通信号を検出し、
前記交通信号の位置を判定し、
前記交通信号の状態を判定し、
前記交通信号の検出、前記交通信号の前記位置の判定、及び前記交通信号の前記状態の判定の後に、前記交通信号に対する信頼性を判定し、前記交通信号に対する前記信頼性を判定することは、前記交通信号の位置を複数の交通信号の一つ以上の既知の位置と比較して、前記交通信号の前記判定された位置から前記複数の交通信号の一つ以上の既知の位置までの最小距離を判定し、前記判定された最小距離が閾値距離より大きい場合、前記判定された最小距離が前記閾値距離より小さい場合よりも前記信頼性が低いと判定することを含み、及び、
前記車両の運動を自律型モードで制御するために、前記交通信号の前記状態及び前記交通信号に対する前記判定された信頼性に応じた制御コマンドを出力することを含み、
前記制御コマンドを出力することは、少なくとも、前記判定された最小距離が前記閾値距離より大きいことに基づいて、減速する命令及び前記検出された交通信号に関する追加の情報を取得する命令を含む制御コマンドを出力することを含む、方法。 - 請求項1の方法において、前記目標領域は、前記車両の前方にあり、複数の交通信号について予想される高さの範囲を含む方法。
- 請求項1の方法において、前記目標領域は交通交差点に近接している方法。
- 請求項1乃至3の何れか一項に記載の方法において、前記交通信号の前記位置を複数の交通信号の一つ以上の既知の位置と比較することが、
前記交通信号の前記位置が複数の交通信号の前記一つ以上の既知の位置と一致しないと判定することを含む方法。 - 請求項1乃至4の何れか一項に記載の方法において、前記一つ以上のセンサは、一つ以上のカメラを含み、前記目標領域情報は、前記一つ以上のカメラにより得られた画像を含み、前記目標領域情報内で交通信号を検出することは、交通信号について予想される赤色、黄色、及び緑色の物体のパターンを前記画像内に認識することを含む方法。
- 請求項1乃至4の何れか一項に記載の方法において、前記目標領域情報は三次元点クラウドを含むと共に、前記目標領域情報内に交通信号を検出することは、交通信号について予想される形状を有する三次元点クラウド内の物体を認識することを含む方法。
- 請求項1乃至6の何れか一項に記載の方法において、前記目標領域情報は地理的な位置及び方位情報を含むと共に、前記交通信号の前記位置は、前記地理的な位置及び方位情報に基づいて判定される方法。
- 請求項7の方法において、前記交通信号の前記位置は三次元位置であると共に、前記方法は更に、
前記交通信号の前記三次元位置をメモリに記憶することを含む方法。 - 請求項1乃至8の何れか一項に記載の方法において、前記複数の交通信号の一つ以上の既知の位置は、複数の交通信号の三次元位置の地図と前記車両の地理的な位置とに基づいて判定される方法。
- 非一時的なコンピュータ可読媒体であって、コンピュータ・デバイスにより実行可能な記憶された指令を有し、この指令は前記コンピュータ・デバイスに請求項1乃至9の何れか一項に記載の方法を実行させる非一時的なコンピュータ可読媒体。
- 自律型モードで操作されるように構成された車両であって、
一つ以上のセンサと、
メモリと、
プロセッサと、及び
前記メモリに記憶されて、かつ、前記プロセッサにより実行可能な指令とを備え、その指令は、
一つ以上のセンサに目標領域を走査させて目標領域情報を得、
前記目標領域情報内で交通信号を検出し、
前記交通信号の位置を判定し、
前記交通信号の状態を判定し、
前記交通信号の検出、前記交通信号の前記位置の判定、及び前記交通信号の前記状態の判定の後に、前記交通信号に対する信頼性を判定し、この交通信号に対する前記信頼性を判定することは、前記交通信号の位置を複数の交通信号の一つ以上の既知の位置と比較して、前記交通信号の前記判定された位置から前記複数の交通信号の一つ以上の既知の位置までの最小距離を判定し、前記判定された最小距離が閾値距離より大きい場合、前記判定された最小距離が前記閾値距離より小さい場合よりも前記信頼性が低いと判定することを含み、及び、
前記車両の運動を自律型モードで制御するために、前記交通信号の前記状態と前記交通信号に対する前記判定された信頼性に応じた制御コマンドを出力することを含み、
前記制御コマンドを出力することは、少なくとも、前記判定された最小距離が前記閾値距離より大きいことに基づいて、減速する命令及び前記検出された交通信号に関する追加の情報を取得する命令を含む制御コマンドを出力することを含む、車両。 - 請求項11の車両において、前記目標領域は、前記車両の前方にあり、複数の交通信号について予想される高さの範囲を含む車両。
- 請求項11の車両において、前記目標領域情報は、一つ以上のカメラにより得られた画像を含み、前記目標領域情報内で交通信号を検出することは、交通信号について予想される赤色、黄色、及び緑色の物体のパターンを前記画像内に認識することを含む車両。
- 請求項11乃至13の何れか一項に記載の車両において、前記メモリに記憶されて、かつ、前記プロセッサで実行可能な指令を更に含み、この指令は、
前記交通信号の前記位置を前記メモリに記憶させ、前記交通信号の位置は三次元位置であることを含む車両。 - 請求項11乃至14の何れか一項に記載の車両において、前記複数の交通信号の一つ以上の既知の位置は、複数の交通信号の三次元位置の地図と前記車両の地理的な位置とに基づいて判定される車両。
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| Application Number | Priority Date | Filing Date | Title |
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| US13/430,150 | 2012-03-26 | ||
| US13/430,150 US9145140B2 (en) | 2012-03-26 | 2012-03-26 | Robust method for detecting traffic signals and their associated states |
| PCT/US2013/024573 WO2013147994A1 (en) | 2012-03-26 | 2013-02-04 | A robust method for detecting traffic signals and their associated states |
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| JP2017168460A Division JP6622265B2 (ja) | 2012-03-26 | 2017-09-01 | 交通信号とそれらに関連した状態を検出するためのロバスト法 |
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| JP2015518600A JP2015518600A (ja) | 2015-07-02 |
| JP2015518600A5 JP2015518600A5 (ja) | 2017-10-19 |
| JP6270064B2 true JP6270064B2 (ja) | 2018-01-31 |
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| JP2017168460A Active JP6622265B2 (ja) | 2012-03-26 | 2017-09-01 | 交通信号とそれらに関連した状態を検出するためのロバスト法 |
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| US11731629B2 (en) | 2012-03-26 | 2023-08-22 | Waymo Llc | Robust method for detecting traffic signals and their associated states |
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| US11731629B2 (en) | 2012-03-26 | 2023-08-22 | Waymo Llc | Robust method for detecting traffic signals and their associated states |
| US12134384B2 (en) | 2012-03-26 | 2024-11-05 | Waymo Llc | Robust method for detecting traffic signals and their associated states |
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