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De- rotating face

De- rotating face. - Procedure Eye detection and mouth detection Measuring angle of face Rotating the face back to upright frontal position. EyemapC. High Cb and low Cr values are found the eyes(EyemapC). EyemapL. Eye contains both dark and bright pixels in the luminance component(EyemapL).

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De- rotating face

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  1. De- rotating face - Procedure • Eye detection and mouth detection • Measuring angle of face • Rotating the face back to upright frontal position

  2. EyemapC • High Cb and low Cr values are found the eyes(EyemapC)

  3. EyemapL • Eye contains both dark and bright pixels in the luminance component(EyemapL)

  4. Eyemap • Eyemap=(EyeMapC)AND(EyeMapL) • ->Normalize Eyemap to the range [0,255]

  5. Construction of eye map

  6. MouthMap • The color of mouth region contains more red component and less blue component than other facial region. • Hence, Cr>Cb

  7. Construction of the mouth map

  8. Test

  9. Locating Eyes

  10. Locating mouth and rotating

  11. Extracting face part

  12. Result

  13. More result

  14. More results

  15. Advantages • Fast to get result (1.7 seconds) • It can be related to face detection.

  16. Further study • Better lightening compensate techniques is required->Very sensitive to lightening problems • Different method to measure angle -> Eyes can’t always be detected.(Sunglasses, small eyes, closed eyes, etc)

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