JP5122948B2 - タッチ面に対応するポインタを検出するための装置及び方法 - Google Patents
タッチ面に対応するポインタを検出するための装置及び方法 Download PDFInfo
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- 238000003384 imaging method Methods 0.000 claims description 126
- 238000012545 processing Methods 0.000 claims description 26
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
- G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
- G06T7/85—Stereo camera calibration
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
- G06T2207/10012—Stereo images
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20092—Interactive image processing based on input by user
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30244—Camera pose
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Human Computer Interaction (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Position Input By Displaying (AREA)
- Studio Devices (AREA)
Description
(x、y)は、3次元シーン内の点(X、Y、Z)に対応する捕捉した画像内の点の座標であり、
(x0、y0)は、ディジタル・カメラ74の主点、すなわち、光軸が焦点面に対してほぼ直角を成す状態でディジタル・カメラの光軸がディジタル・カメラの焦点面と交わる位置、の座標であり、
(Δx、Δy)は、レンズ88の不完全な性質のために導入される歪曲項を表し、
fは、ディジタル・カメラの焦点距離であり、
(R1、R2、R3)は、点(X、Y、Z)と、ディジタル・カメラの光学的中心の空間的位置(X0、Y0、Z0)と、タッチ面54の3次元座標系に対するディジタル・カメラの光軸の方位角(ω、φ、κ)に依存する項である。
Claims (18)
- タッチ面に対するポインタを検出する装置であって、
前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスであって、前記各撮像デバイスは、前記撮像デバイスが前記タッチ面を3次元で、前記タッチ面の境界を含む斜視図として見るように、前記タッチ面に向けられた視界を有し、前記撮像デバイスは異なる視点からの重なり合う画像を取得し、取得した画像内のピクセルのサブセットを決定するために、取得した画像と、前記タッチ面の前記境界を記述する数学モデルと、を比較し、画像データを生成するためにピクセルのサブセットを処理する、前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスと、
前記ポインタの位置を決定するために、少なくとも1つの前記撮像デバイスにより生成された画像データを受信し処理する処理構成と、を有するタッチ面に対するポインタを検出する装置。 - 前記斜視図内の点(X、Y、Z)と取得した画像内の点(x、y)の間の関係を確立するために各撮像デバイスは較正され、取得した画像内にポインタが存在するときに各撮像デバイスはポインタ座標データを生成する請求項1記載の装置。
- 前記タッチ面に対する前記ポインタの前記位置を決定するために、前記処理構成は前記画像データを三角測量する請求項1記載の装置。
- 各撮像デバイスは、前記タッチ面の異なるコーナーに隣接して配置される請求項1記載の装置。
- 各撮像デバイスは、前記タッチ面から間隔を置いて横方向に配置され、前記タッチ面の前方に配置される請求項4記載の装置。
- 前記タッチ面は、ベゼルによって境界を接せられる請求項1記載の装置。
- 各撮像デバイスの外部オリエンテーション・パラメタ(X0、Y0、Z0)及び(ω、φ、κ)が、較正の間に決定される請求項3記載の装置であって、
(X0、Y0、Z0)は、前記撮像デバイスの前記光学的中心の前記空間的位置であり、
(ω、φ、κ)は、前記タッチ面の前記3次元の座標系に対する前記撮像デバイスの前記光軸の前記方位角である請求項3記載の装置。 - 各撮像デバイスの内部オリエンテーション・パラメタf、x0、y0及びΔx、Δyが、較正の間に決定される請求項7記載の装置であって、
(Δx、Δy)は、前記撮像デバイスのレンズの不完全な性質のために導入される歪曲項を表し、
fは、前記撮像デバイスの前記焦点距離であり、
(x0、y0)は、前記撮像デバイスの前記主点の前記座標である、装置。 - 前記関係は、共線性方程式を使用して次式のように表現される請求項8記載の装置であって、
(x、y)は、前記3次元斜視図内の点(X、Y、Z)に対応する取得した画像内の点の前記座標であり、
(R1、R2、R3)は、点(X、Y、Z)と、前記空間的位置(X0、Y0、Z0)と、前記方位角(ω、φ、κ)に依存する項である装置。 - 較正の間に、前記タッチ面上の較正点(X、Y、Z)と前記較正点に対応する像点(x、y)が測定され、前記共線性方程式は前記測定した較正点と像点を使用して解かれ、その結果により前記外部及び内部オリエンテーション・パラメタを決定する請求項9記載の装置。
- 各撮像デバイスは、前記取得した画像内の前記ポインタを前記撮像デバイスが確かに識別した確実度を表す確実度値も生成する請求項2記載の装置。
- 前記確実度値は、前記ポインタの前記位置を決定するために使用されるポインタ座標データを決定するために、前記処理構成により使用される請求項11記載の装置。
- 前記撮像デバイスに関連する前記確実度値がスレッショルド・レベル以下である場合に、前記処理構成は前記撮像デバイスにより生成されたポインタ座標データを無視する請求項12記載の装置。
- 前記撮像デバイスは、取得した画像内のポインタの決定を支援するために交信する請求項2記載の装置。
- 前記撮像デバイスの取得した画像内のポインタを検出する前記撮像デバイスは、他の撮像デバイスとデータを最初に交信し、前記撮像デバイスの取得した画像内のポインタを検出して前記他の撮像デバイスを支援する請求項14記載の装置。
- ポインタを使用してコンタクトが行われる全体として長方形の受動タッチ面と、
前記タッチ面の少なくとも2つのコーナーに隣接して取り外し可能に搭載されたカメラ・デバイスであって、前記カメラ・デバイスのそれぞれは、前記タッチ面の前記平面の前方に配置され、前記タッチ面に向かって全体を見渡せるような視界を有し、前記カメラ・デバイスの前記視界は、前記カメラ・デバイスが前記タッチ面とその境界を斜視図に見るように、前記タッチ面の上に重なり合っており、前記カメラ・デバイスは、異なる視点から前記タッチ面の画像を取得し、前記タッチ面に全般的に対応する取得した画像内の関連ピクセルのサブセットを決定するために、前記取得した画像と、前記カメラ・デバイスによって見られる前記タッチ面の前記境界を記述する数学モデルと、を比較し、画像データを生成するために前記各取得した画像内の関連ピクセルの前記サブセットを処理する、前記タッチ面の少なくとも2つのコーナーに隣接して取り外し可能に搭載されたカメラ・デバイスと、
三角測量によって前記タッチ面に対する前記ポインタの前記位置を決定するために、前記画像データを受信し処理するプロセッサと、を有するカメラ・ベースのタッチ・システム。 - 全体として長方形のタッチ面に対するポインタを検出する装置であって、
前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスであって、前記撮像デバイスは、前記タッチ面の前方に間隔を置いて配置され、前記タッチ面を3次元で斜視図として見るように向いており、前記斜視図は前記タッチ面の少なくとも前記4つのコーナーと側部を含み、前記撮像デバイスは異なる視点からの重なり合う画像を取得し、取得した画像内の関連ピクセルのサブセットを決定するために、前記取得した画像と、前記タッチ面の前記境界を記述する数学モデルと、を比較し、画像データを生成するために前記取得した画像内の関連ピクセルの前記サブセットを処理する、前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスと、
三角測量を使用して前記タッチ面に対する前記ポインタの位置を決定するために、少なくとも1つの前記撮像デバイスにより生成された画像データを受信し処理するプロセッサと、を有する全体として長方形のタッチ面に対するポインタを検出する装置。 - タッチ面に対するポインタを検出する装置であって、
前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスであって、前記各撮像デバイスは、前記タッチ面の前方にあり、前記撮像デバイスが前記タッチ面を3次元で、前記タッチ面の境界を含む斜視図として見るように、前記タッチ面に向けられており、前記撮像デバイスは異なる視点からの重なり合う画像を取得する、前記タッチ面を包含して重なり合う視界を有する少なくとも2つの間隔を置いて配置された撮像デバイスと、
前記ポインタの位置を決定するために、少なくとも1つの前記撮像デバイスにより生成された画像データを受信し処理する処理構成であって、前記斜視図内の点(X、Y、Z)と取得した画像内の点(x、y)の間の関係を確立するために各撮像デバイスは較正され、取得した画像内にポインタが存在するときに各撮像デバイスはポインタ座標データを生成し、各撮像デバイスの外部オリエンテーション・パラメタ(X0、Y0、Z0)及び(ω、φ、κ)が、較正の間に決定され、
(X0、Y0、Z0)は、前記撮像デバイスの前記光学的中心の前記空間的位置であり、
(ω、φ、κ)は、前記タッチ面の前記3次元の座標系に対する前記撮像デバイスの前記光軸の前記方位角である、前記ポインタの位置を決定するために、少なくとも1つの前記撮像デバイスにより生成された画像データを受信し処理する処理構成と、
を有するタッチ面に対するポインタを検出する装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/838,536 US7492357B2 (en) | 2004-05-05 | 2004-05-05 | Apparatus and method for detecting a pointer relative to a touch surface |
US10/838,536 | 2004-05-05 | ||
PCT/CA2005/000636 WO2005106775A1 (en) | 2004-05-05 | 2005-04-28 | Apparatus and method for detecting a pointer relative to a touch surface |
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JP2007536652A JP2007536652A (ja) | 2007-12-13 |
JP2007536652A5 JP2007536652A5 (ja) | 2008-06-19 |
JP5122948B2 true JP5122948B2 (ja) | 2013-01-16 |
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US (2) | US7492357B2 (ja) |
EP (2) | EP1766501A4 (ja) |
JP (1) | JP5122948B2 (ja) |
CN (1) | CN101019096B (ja) |
CA (1) | CA2564262A1 (ja) |
WO (1) | WO2005106775A1 (ja) |
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- 2005-04-28 CN CN2005800144416A patent/CN101019096B/zh active Active
- 2005-04-28 JP JP2007511795A patent/JP5122948B2/ja not_active Expired - Fee Related
- 2005-04-28 CA CA002564262A patent/CA2564262A1/en not_active Abandoned
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JP2007536652A (ja) | 2007-12-13 |
EP1766501A1 (en) | 2007-03-28 |
US20090146972A1 (en) | 2009-06-11 |
CN101019096B (zh) | 2012-04-18 |
US20050248539A1 (en) | 2005-11-10 |
US7492357B2 (en) | 2009-02-17 |
WO2005106775A1 (en) | 2005-11-10 |
EP2562622A2 (en) | 2013-02-27 |
EP2562622A3 (en) | 2013-08-07 |
CA2564262A1 (en) | 2005-11-10 |
CN101019096A (zh) | 2007-08-15 |
EP1766501A4 (en) | 2008-07-16 |
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