JP7074955B2 - 事象ベースの視覚センサのためのデータ速度制御 - Google Patents
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Description
本出願は、2016年12月30日に出願されたスイス仮特許出願第CH20160001764号、および2016年12月30日に出願されたスイス仮特許出願第CH20160001765号の優先権を主張するものであり、これら両方は、それらの全体が引用により本明細書に組み入れられる。
変化検出ピクセルのアレイ110と、
事象速度検出器200と、
コントローラ120と、
閾値生成回路130と、
読み出し回路140と、
を含む。
・ 事象速度:事象速度検出器200からの入力、
・ MinEventRate:定数、最小の望ましい事象速度、
・ MaxEventRate:定数、最大の望ましい事象速度、
・ MinEventThreshold:パラメータ、最小閾値設定、
・ MaxEventThreshold:パラメータ、最大閾値設定、
・ Step:パラメータ、事象閾値がループの各通過の間に変化するステップ、
・ EventThreshold:事象生成回路に供給される出力、
・ Trigger:ループを開始する周期的入力信号、
に基づいて、事象速度を望ましい範囲内に保持するように、修正される。
Claims (15)
- 光を検出するピクセルを備えたピクセルアレイと、
前記ピクセルによって受け取られる光の変化を、事象を検出するための1つまたはそれ以上の閾値と比較することによって、前記ピクセルによって受け取られた光に関連付けられる事象を検出するための事象検出器と、
前記事象を評価するための事象速度検出器と、
前記事象速度検出器に基づいて、前記ピクセルが前記事象を検出する仕方を変えるためのコントローラであって、前記コントローラは、前記事象速度検出器により提供される事象速度を最大事象速度と比較し、前記事象速度が最大事象速度よりも大きい場合、前記コントローラは1つ以上の閾値を変化させる、コントローラと、
を備える、変化検出センサ。 - 前記事象速度検出器は、前記事象検出器からの事象を数えることによって前記事象を評価するための計数器を備える、請求項1に記載のセンサ。
- 前記事象速度検出器は、事象を推定することによって前記事象を評価するための事象推定器を備える、請求項1に記載のセンサ。
- 前記事象速度検出器は、事象を記録する前記事象検出器の数に基づくアナログ信号を分析することによって前記事象を評価する、請求項1に記載のセンサ。
- 前記事象検出器によって適用される前記1つまたはそれ以上の閾値を設定するための閾値生成回路をさらに備える、請求項1に記載のセンサ。
- 前記コントローラは、前記事象速度検出器によって与えられた前記評価に応じて与えられる前記1つまたはそれ以上の閾値を変える、請求項1に記載のセンサ。
- 前記コントローラは、前記ピクセルアレイ内のON事象およびOFF事象に基づいて、ON事象およびOFF事象に関する閾値を別々に設定する、請求項1に記載のセンサ。
- 前記ピクセルの各々は、前記ピクセルがリセットされたときに受け取る光に対応する電荷を蓄積するための、前記事象検出器の内の1つのメモリキャパシタを備える、請求項1に記載のセンサ。
- 前記ピクセルの各々は、受け取った光の変化を、前記事象を検出するための前記1つまたはそれ以上の閾値と比較するための、前記事象検出器の内の1つの、1つまたはそれ以上の比較器を備える、請求項1に記載のセンサ。
- 受け取った光の変化を、前記事象を検出するための前記1つまたはそれ以上の閾値と比較するための、前記事象検出器の比較器をさらに備え、前記比較器は読み出し回路内に位置する、請求項1に記載のセンサ。
- 変化検出センサの動作の方法であって、
ピクセルアレイ内のピクセルによって受け取られる光の変化を、事象を検出するための1つまたはそれ以上の閾値と比較することによって、ピクセルアレイ内のピクセルによって受け取られた光に関連付けられる事象を検出するステップと、
前記ピクセルアレイからの前記事象を評価するステップと、
前記ピクセルアレイからの前記事象により得られる事象速度を最大事象速度と比較し、前記事象速度が最大事象速度よりも大きい場合、1つ以上の閾値を変化させることによって、前記ピクセルアレイからの前記事象の前記評価に基づいて、前記ピクセルが前記事象を検出する仕方を変えるステップと、
を含む、方法。 - 前記事象を評価するステップは、前記事象を数えるステップを含む、請求項11に記載の方法。
- 前記事象を評価するステップは、前記事象を推定するステップを含む、請求項11に記載の方法。
- 前記事象の前記評価に応じて、前記ピクセルに対して事象検出器によって適用される前記1つまたはそれ以上の閾値を設定するステップをさらに含む、請求項11に記載の方法。
- 前記ピクセルアレイからのON事象およびOFF事象に基づいて、ON事象およびOFF事象に関する閾値を別々に設定するステップをさらに含む、請求項11に記載の方法。
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JP2024022196A JP2024056930A (ja) | 2016-12-30 | 2024-02-16 | 事象ベースの視覚センサのためのデータ速度制御 |
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PCT/IB2017/058528 WO2018122800A1 (en) | 2016-12-30 | 2017-12-29 | Data rate control for event-based vision sensor |
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JP2022036833A Active JP7442560B2 (ja) | 2016-12-30 | 2022-03-10 | 事象ベースの視覚センサのためのデータ速度制御 |
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JP2022036827A Active JP7374242B2 (ja) | 2016-12-30 | 2022-03-10 | 動的ビジョンセンサアーキテクチャ |
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