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Extracting Depth and Matte using a Color-Filtered Aperture

Extracting Depth and Matte using a Color-Filtered Aperture. Extracting Depth and Matte using a Color-Filtered Aperture. 簡介 準備 原理 裁切 範例 比較. 簡介. 單一取景 深度資訊 RGB 分離造成偏移 相近色背景也可取出主體. 準備. 安裝分色濾鏡. 準備. 安裝分色濾鏡. 準備. 安裝分色濾鏡. 準備. 安裝分色濾鏡. 原理. 原理. 原理. 原理. 三種顏色，三個面 I r I g I b.

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Extracting Depth and Matte using a Color-Filtered Aperture

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  1. Extracting Depth and Matte using a Color-Filtered Aperture

  2. Extracting Depth and Matte using a Color-Filtered Aperture • 簡介 • 準備 • 原理 • 裁切 • 範例 • 比較

  3. 簡介 • 單一取景 • 深度資訊 • RGB分離造成偏移 • 相近色背景也可取出主體

  4. 準備 • 安裝分色濾鏡

  5. 準備 • 安裝分色濾鏡

  6. 準備 • 安裝分色濾鏡

  7. 準備 • 安裝分色濾鏡

  8. 原理

  9. 原理

  10. 原理

  11. 原理 • 三種顏色，三個面 Ir Ig Ib • Ir(x+d, y), Ig(x, y−d), Ib(x−d, y)

  12. 原理 • 畫面分割為小視窗

  13. 原理 • 畫面分割為小視窗 • SI (x, y; d) = {(Ir(s+d, t), Ig(s, t−d), Ib(s−d, t)) | (s, t) ∈ w(x, y)} • 最小化

  14. 原理

  15. 裁切

  16. 裁切

  17. 裁切

  18. 裁切

  19. 裁切

  20. 裁切 • SF (x, y; d) = {(Fr(s+d, t), Fg(s, t−d), Fb(s−d, t)) | (s, t) ∈ w(x, y)} li is the distance of the i-th color in SF (x, y; d) from the line fitted to the elongated color cluster (i.e., the first principal axis).

  21. 裁切 • SF (x, y; d) = {(Fr(s+d, t), Fg(s, t−d), Fb(s−d, t)) | (s, t) ∈ w(x, y)}

  22. 裁切 決定下個α

  23. 範例

  24. 比較

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