- Processing the 'old people' data and providing a feedback for the photographers who collecting the 'old people' image data.
- Colors too dark: Facial features are barely distinguishable.
- Excessive occlusion: Almost 60% of facial features are obstructed.
- Excessive side profile angle: Side profile exceeds 90 degrees.
- Motion blur: Face is not clear, and there is ghosting in the hair strands.
- Insufficient data for a single ID: Facial data for the same person is less than or equal to 2.