ProBio (QR)
User Manual
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Requirements for Visible Light Digital Face Image Data
The digital photo should be straight-edged, coloured, half-portrayed with only one person, and the person
should be uncharted and in casuals. Persons who wear eyeglasses should remain to put on eyeglasses for
getting photos captured.
Eye Distance
200 pixels or above are recommended with no less than 115 pixels of distance.
Facial Expression
A neutral face or smile with eyes naturally open are recommended.
Gesture and Angel
The horizontal rotating angle should not exceed ±10°, elevation should not exceed ±10°, and depression
angle should not exceed ±10°.
Accessories
Masks or coloured eyeglasses are not allowed. The frame of the eyeglasses should not cover the eyes and
should not reflect light. For persons with thick eyeglasses frames, it is recommended to capture two images,
one with eyeglasses and the other one without them.
Face
Complete face with clear contour, real scale, evenly distributed light, and no shadow.
Image Format
Should be in BMP, JPG or JPEG.
Data Requirement
Should comply with the following requirements:
1.
White background with dark-coloured apparel.
2.
24bit true color mode.
3.
JPG format compressed image with not more than 20kb size.
4.
Resolution should be between 358 x 441 to 1080 x 1920.
5.
The vertical scale of head and body should be in a ratio of 2:1.
6.
The photo should include the captured person’s shoulders at the same horizontal level.
7.
The captured person’s eyes should be open and with clearly seen iris.
8.
A neutral face or smile is preferred, showing teeth is not preferred.
9.
The captured person should be easily visible, natural in color, no harsh shadow or light spot or
reflection in the face or background. The contrast and lightness level should be appropriate.
