JP7206343B2 - アノニマス再識別の構想 - Google Patents
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Description
Claims (14)
- 処理回路(24)を備える再識別のための装置(20)であって、前記処理回路(24)は、
インタフェース(22)を介してメディアデータを取得し、
ハッシングアルゴリズムの使用により前記メディアデータの少なくとも一部分を表している再識別コードを生成し、
変形機能性の使用により前記再識別コードを変形して、変形済み再識別コードを取得し、
前記変形機能性は、前記再識別コードが類似性メトリックに従って前記ハッシングアルゴリズムによって生成した他の再識別コードに類似する場合、前記変形済み再識別コードが他の再識別コードの変形バージョンである他の変形済み再識別コードに類似するように、前記再識別コードを変形するよう構成されているものであり、
前記変形機能性は、時間及び/又は場所に依存する変形パラメータに基づいて前記再識別コードを変形するよう構成されているものであり、また
前記変形済み再識別コードを供給する
よう構成されている、該処理回路(24)を備える、装置。 - 請求項1記載の装置において、前記変形パラメータは時間に依存し、前記処理回路は、所定時間スケジュールに従って前記変形パラメータを適応させるよう構成されている、装置。
- 請求項2記載の装置において、前記処理回路は、前記変形パラメータを適応させた後に、先に使用した変形パラメータを削除するよう構成されている、装置。
- 請求項2又は3記載の装置において、前記処理回路は、2つの時点に対して2つの変形パラメータを生成し、そして前記2つの変形パラメータ間における線形的補間に基づいて前記変形パラメータを前記2つの時点間内に漸次的に適応させるよう構成されている、装置。
- 請求項1~4のうちいずれか1項記載の装置において、前記変形パラメータは暗号秘密から抽出する、装置。
- 請求項1~5のうちいずれか1項記載の装置において、前記変形機能性は、前記再識別コードの非線形的変形を実施するよう構成されている、装置。
- 請求項6記載の装置において、前記変形機能性は、機械学習モデルを使用して、前記非線形的変形を実施するよう構成されている、装置。
- 請求項1~7のうちいずれか1項記載の装置において、前記メディアデータは、画像データ、ビデオデータ、音声データ、物体運動の3次元表現、及びテキストベースのメディアデータのうちの1つである、装置。
- 請求項1~8のうちいずれか1項記載の装置において、前記処理回路は、カメラの画像センサから前記メディアデータを取得するよう構成され、前記メディアデータは、画像データ及びビデオデータのうち一方であり、又は
前記処理回路は、ネットワークを介して1つ又はそれ以上のメディアデータ生成デバイスから前記メディアデータを取得するよう構成されている、装置。 - 請求項9記載の装置において、前記処理回路は、異なる場所に設置されている2つまたはそれ以上のメディアデータ生成デバイスから前記メディアデータを取得するよう構成され、前記処理回路は、異なる場所に設置されている2つ又はそれ以上のメディアデータ生成デバイスに対して異なる変形パラメータを使用して、前記変形を実施するよう構成されている、装置。
- 請求項10記載の装置において、前記処理回路は、異なる場所に設置されている第1、第2及び第3のメディアデータ生成デバイスから前記メディアデータを取得するよう構成され、前記第2メディアデータ生成デバイスは、前記第1メディアデータ生成デバイスと前記第3メディアデータ生成デバイスとの間に設置されているものであり、前記処理回路は、前記第1及び第3のメディアデータ生成デバイスから取得したメディアデータに対して使用される変形パラメータ間における線形的補間に基づいて、前記第2メディアデータ生成デバイスから取得したメディアデータに対して変形パラメータを生成するよう構成されている、装置。
- カメラデバイス(200)であって、画像センサ(28)と、請求項1~11のうちいずれか1項記載の装置(20)とを備える、カメラデバイス。
- システム(300;310)であって、請求項1~11のうちいずれか1項記載の2つまたはそれ以上の装置(20)を備える、システム。
- 請求項13記載のシステムにおいて、前記変形パラメータは時間に依存し、前記2つまたはそれ以上の装置は、同一時刻に同一変形パラメータを使用するよう構成されている、又は
前記変形パラメータは場所に依存し、前記2つまたはそれ以上の装置は、2つまたはそれ以上の場所由来のメディアデータを処理し、そして前記2つまたはそれ以上の場所由来のメディアデータに対して異なる変形パラメータを使用するよう構成されている、システム。
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EP20197542.2A EP3971797A1 (en) | 2020-09-22 | 2020-09-22 | A concept for anonymous re-identification |
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