To ensure the camera is placed and configured for faces to be easily recognizable

1. Camera View Guidelines To ensure the camera is placed and configured for faces to be easily recognizable

2. Summary Range of face sizes Highest acceptable camera angle Largest face size Smallest face size • Minimum 35 pixels eye-to-eye • Person must be looking toward camera • Face and torso must be in full view • Facial features must be clear

3. Examples of good views Both faces are good for recognition Face is smallest acceptable size Good angle Good size Good lighting Looking in direction of camera Facial features are clear

4. Examples of poor images

5. Poor vertical camera angle(looking down too steeply) Camera shows mostly tops of heads

6. Face size too small Face must be >35 pixels across, from eye to eye, at the same time it is well lit and looking at camera These faces are too small as they pass through the turnstile They may become large enough as they approach the camera, if they are still well lit and looking forward. Face too small when lit Face too dark when large enough

7. Poor lighting (too dark)

8. Poor lighting (uneven) Even if overall lighting level is good, shadows and glare can make the face hard to see clearly

9. Not looking toward camera The more the person is looking toward the camera, the better At a minimum, both eyes must be visible. People often look down or turn away after passing through the turnstile. Try to capture people as they pass through the arm. Faces in profile can not be recognized.

10. Poor Focus When focus is bad, everything is blury

11. Poor overall quality Bad - Fuzzy Good - Clear Notice that faces are more fuzzy and indistinct in the right image compared to the left. Fuzziness can be caused by strong video compression, fast motion, a dirty lens or dome, or the camera adapting to dim light