JP7026853B2 - 画像処理装置、評価システム、画像処理プログラム及び画像処理方法 - Google Patents
画像処理装置、評価システム、画像処理プログラム及び画像処理方法 Download PDFInfo
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Description
ここで、伝達関数H(fx,fy;z)は、周波数応答関数(インパルス応答関数(グリーン関数)のフーリエ変換)である。
10 撮像装置
20 画像処理装置
21 取得部
22 位相差画像生成部
23 特定部
24 加算平均画像生成部
25 内接円導出部
26 膨張処理部
27 抽出部
30 評価装置
31 取得部
32 形状指標値導出部
33 位相差量総和導出部
34 判定部
35 位相差量密度導出部
100 ホログラム光学系
101 レーザ光源
102 ビームスプリッタ
103 コリメートレンズ
105 対物レンズ
107 結像レンズ
108 ビームスプリッタ
109 光ファイバ
110 コリメートレンズ
200 フローセル
300 スフェア
400 輪郭線
401 内接円
501、601 CPU
502、602 主記憶装置
503、603 補助記憶装置
504、604 通信インターフェース
505、605 バス
506 画像処理プログラム
606 評価プログラム
Claims (8)
- 複数の粒状体を撮像視野内に収めて撮像したホログラムを取得する取得部と、
前記ホログラムを撮像する際の光軸方向の互いに異なる位置の各々における位相差画像を、前記ホログラムから生成する生成部と、
前記位相差画像の少なくとも一部を平均化した平均化画像において、前記複数の粒状体の各々に対応する、前記光軸方向と交差する平面の方向における複数の画像範囲を特定する特定部と、
前記複数の画像範囲の各々について、対応する粒状体の前記光軸方向の中心位置における位相差画像を抽出する抽出部と、
を含む画像処理装置。 - 前記特定部は、
前記位相差画像の少なくとも一部を加算平均した加算平均画像を、前記平均化画像として生成する加算平均画像生成部と、
前記加算平均画像における前記粒状体の外縁に対応する輪郭線からの距離が、周囲の他の点よりも長くなる各点を中心とし、前記輪郭線に内接する複数の内接円を導出する内接円導出部と、
前記内接円の各々について膨張処理を施す膨張処理部と、
を含む
請求項1に記載の画像処理装置。 - 前記抽出部は、前記光軸方向の互いに異なる位置の各々における位相差画像のうち、画素間の位相差量のばらつきが最大となるものを、前記粒状体の前記光軸方向の中心位置における位相差画像として抽出する
請求項1または請求項2に記載の画像処理装置。 - 前記粒状体は、複数の細胞の凝集体である
請求項1から請求項3のいずれか1項に記載の画像処理装置。 - 複数の粒状体を撮像視野内に収めたホログラムを撮像する撮像装置と、
前記ホログラムに対する画像処理を行う画像処理装置と、
前記画像処理装置によって得られた画像に基づいて、前記複数の粒状体の各々について評価結果を出力する評価装置と、を含み、
前記画像処理装置は、
前記ホログラムを取得する取得部と、
前記ホログラムを撮像する際の光軸方向の互いに異なる位置の各々における位相差画像を、前記ホログラムから生成する生成部と、
前記位相差画像の少なくとも一部を平均化した平均化画像において、前記複数の粒状体の各々に対応する、前記光軸方向と交差する平面の方向における複数の画像範囲を特定する特定部と、
前記複数の画像範囲の各々について、対応する粒状体の前記光軸方向の中心位置における位相差画像を抽出する抽出部と、
を含み、
前記評価装置は、前記抽出部によって抽出された位相差画像を用いて前記評価結果を導出する
評価システム。 - 前記複数の粒状体が流動する流路を更に含み、
前記撮像装置は、前記撮像視野内に前記流路の幅方向の全域が収まるように設置されている
請求項5に記載の評価システム。 - 複数の粒状体を撮像視野内に収めて撮像したホログラムを取得し、
前記ホログラムを撮像する際の光軸方向の互いに異なる位置の各々における位相差画像を、前記ホログラムから生成し、
前記位相差画像の少なくとも一部を平均化した平均化画像において、前記複数の粒状体の各々に対応する、前記光軸方向と交差する平面の方向における複数の画像範囲を特定し、
前記複数の画像範囲の各々について、対応する粒状体の前記光軸方向の中心位置における位相差画像を抽出する
処理をコンピュータに実行させるための画像処理プログラム。 - 複数の粒状体を撮像視野内に収めて撮像したホログラムを取得し、
前記ホログラムを撮像する際の光軸方向の互いに異なる位置の各々における位相差画像を、前記ホログラムから生成し、
前記位相差画像の少なくとも一部を平均化した平均化画像において、前記複数の粒状体の各々に対応する、前記光軸方向と交差する平面の方向における複数の画像範囲を特定し、
前記複数の画像範囲の各々について、対応する粒状体の前記光軸方向の中心位置における位相差画像を抽出する
画像処理方法。
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