JP2018077510A - パラメータ引き継ぎを伴う反復位相回復 - Google Patents
パラメータ引き継ぎを伴う反復位相回復 Download PDFInfo
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- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
- G03H1/0808—Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
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- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
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- G03H1/04—Processes or apparatus for producing holograms
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Abstract
Description
F’は逆フーリエ変換、
Fは順フーリエ変換、
Rはリプレイフィールド、
Tは目標画像、
∠は角度情報、
Ψは角度情報の量子化バージョン、
εは新たな目標強度(ε≧0)、
αは利得要素〜1
である。
Claims (3)
- 画像フレームのホログラフィック再構成のために、前記画像フレームのシーケンスのn番目のフレームを表すフーリエ領域の位相情報を回復する方法であって、
各画像フレームに対して、以下の一連のステップ:
複数の要素を有する第1のデータセットを定めるステップであって、各要素が第1の位相情報及び第1の振幅情報を有するステップ、
前記第1のデータセットにフーリエ変換を行って複数の要素を有する第2のデータセットを生成するステップであって、各要素が第2の振幅情報及び第2の位相情報を有するステップ、前記第2の位相情報を量子化するステップ、
複数の要素を有する第3のデータセットを形成するステップであって、各要素が第3の振幅情報及び第3の位相情報を有し、前記第3の位相情報が前記第2のデータセットから導かれるステップ、
複数の要素を有する第3のデータセットを形成するステップであって、各要素が第3の振幅情報及び第3の位相情報を有し、前記第3の位相情報が前記第2のデータセットの量子化された前記第2の位相情報であり、前記第3の振幅情報が、光源を表す分布に設定される、ステップ、
前記第3のデータセットに逆フーリエ変換を行って複数の要素を有する第4のデータセットを生成するステップであって、各要素が第4の振幅情報及び第4の位相情報を有するステップ、
前記第4のデータセットの振幅情報から前記画像フレームの振幅情報を減算し、減算したものを利得要素αによりスケーリングし、スケーリングしたものを前記画像フレームの振幅情報から減算することにより、前記第4のデータセットの振幅情報を修正して複数の要素を有する第5のデータセットを生成するステップであって、各要素が第5の振幅情報及び第5の位相情報を有するステップ、及び
前記第5のデータセットを次の反復の第1のデータセットとして用いるステップのm回の反復(mは整数)を含むアルゴリズムを実行する方法。 - 2次元ビデオ画像を形成するためのプロジェクタであって、
位相変調素子の2次元アレイを備える空間光変調器と、
請求項1の方法を用いて、空間領域の2次元画像フレームのシーケンスのn番目のフレームを表すフーリエ領域の位相情報を回復するよう構成された処理手段と、
前記空間光変調器の位相変調素子のアレイを駆動して、2次元画像フレームのシーケンスのn番目のフレームのフーリエ変換を表すデータを表示する駆動手段と、
を備えるプロジェクタ。 - 光源をさらに備える請求項2に記載のプロジェクタ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1118558.4A GB2498170B (en) | 2011-10-26 | 2011-10-26 | Frame inheritance |
GB1118558.4 | 2011-10-26 |
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JP2016000871A Division JP6407898B2 (ja) | 2011-10-26 | 2016-01-06 | 位相情報を回復する方法およびプロジェクタ |
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Publication Number | Publication Date |
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JP2018077510A true JP2018077510A (ja) | 2018-05-17 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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JP2014537712A Pending JP2015505971A (ja) | 2011-10-26 | 2012-10-17 | パラメータ引き継ぎを伴う反復位相回復 |
JP2016000871A Active JP6407898B2 (ja) | 2011-10-26 | 2016-01-06 | 位相情報を回復する方法およびプロジェクタ |
JP2017251884A Pending JP2018077510A (ja) | 2011-10-26 | 2017-12-27 | パラメータ引き継ぎを伴う反復位相回復 |
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JP2014537712A Pending JP2015505971A (ja) | 2011-10-26 | 2012-10-17 | パラメータ引き継ぎを伴う反復位相回復 |
JP2016000871A Active JP6407898B2 (ja) | 2011-10-26 | 2016-01-06 | 位相情報を回復する方法およびプロジェクタ |
Country Status (8)
Country | Link |
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US (1) | US9857771B2 (ja) |
EP (1) | EP2748681B8 (ja) |
JP (3) | JP2015505971A (ja) |
KR (1) | KR101475232B1 (ja) |
CN (1) | CN104040438B (ja) |
GB (1) | GB2498170B (ja) |
PL (1) | PL2748681T3 (ja) |
WO (1) | WO2013061029A1 (ja) |
Cited By (1)
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JP2022524727A (ja) * | 2019-02-22 | 2022-05-10 | プレジデント アンド フェローズ オブ ハーバード カレッジ | 位相空間光変調器を用いた大スケールの一様な光学的焦点アレイ生成 |
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CN104040438A (zh) | 2014-09-10 |
JP2015505971A (ja) | 2015-02-26 |
GB2498170A (en) | 2013-07-10 |
JP6407898B2 (ja) | 2018-10-17 |
EP2748681B8 (en) | 2020-08-12 |
KR20140087027A (ko) | 2014-07-08 |
US9857771B2 (en) | 2018-01-02 |
GB2498170B (en) | 2014-01-08 |
KR101475232B1 (ko) | 2014-12-22 |
CN104040438B (zh) | 2017-11-14 |
EP2748681B1 (en) | 2020-06-17 |
EP2748681A1 (en) | 2014-07-02 |
GB201118558D0 (en) | 2011-12-07 |
WO2013061029A1 (en) | 2013-05-02 |
PL2748681T3 (pl) | 2021-01-25 |
JP2016105181A (ja) | 2016-06-09 |
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