28th/June/2010

Security & AV Systems Business UnitPanasonic System Networks Company

WJ-NV200K/G Face Matching

Outline

Mechanism of Face Matching Function

1,280

960

i-PRO Camera detects faces

by face detection function.

150

150200

200

For NV200 face matching,

cameras must have- H.264 compression - SXVGA resolution

- Face detection function.

WV-NP502 / WV-NW502

WV-SP306 / WV-SP305

WV-SF336 / WV-SF335

For NV200 face matching,

cameras must have- H.264 compression - SXVGA resolution

- Face detection function.

WV-NP502 / WV-NW502

WV-SP306 / WV-SP305

WV-SF336 / WV-SF335

i-PRO Camera transmits- video stream and

- information of face frame as meta data

to recorder

150150 200

200

Meta data

Video stream

(1) Camera side

Mechanism of Face Matching Function

Recorder receivesvideo stream and meta

datafrom camera.

150150 200

200

Meta data

Video stream(2) Recorder side

150150 200

200

Meta data

Video stream

Video stream and meta data

are stored into HDD.

Register face image

from playback.

Face alarm

Recorder does matchingbetween registered

facesand faces in live image.

-> Make notice if matched!

Live Viewing

Record

ing

What can be done?◇Real time matching can be done, between face images registered to NV200 previously and face images in live video of i-PRO cameras.

◇Up to 16 face images can be registered, and up to 8 faces of them can be used for matching.

◇When a certain face is matched, NV200 can report as a face alarm. - Face thumbnail on a monitor - Terminal output (exclusive use of face matching ) - Buzzer rumbling - Notification by e-mail - Notification by Panasonic alarm protocol

◇Face alarm search can be done from alarm logs.

Weak points of Face Matching

◇Weak points of environments for NV200 face matching

- Places where there are many peoples. (Ex. Station) - Outdoors (where luminance varies very widely.)

◇Weak points of face characteristics for NV200 face matching

- A person who wares a mask. - A person who looks right or left.

Limitations of Face Matching◇Limitations of NV200 Face Matching# Item

1 Only channel #1 camera can be used for face matching.

2 Channel #1 camera setting is automatically optimized for face matching, and recording condition of #1 follows the setting. Please refer to page 24.

3 Accuracy of matching dues to camera installation and setting. Please refer to page 21-24.

4 Live viewing can be up to 4ch during face matching working.

5 Spot live sequence cannot be used during face matching working.

6 Face matching does not work during playback.

7 Face matching does not work during registration of face image.

8 Up to 8 faces can be matched simultaneously.

9 Alarm notification is likely to be delay. Please refer to page 20.

10

“Face missing” is likely to occur if there are many faces at the same time. Please refer to page 20.

11

Playback image of camera ch1 is recommended for registration of facial image.(Backup images of NV200 in SD card also can be used for registration, but they are not recommended except ch1 image of same recorder.)

12

Registration and operation via network (browser, ASM100, …) are impossible.

Procedure ofFace Registration

Click Face Registration Button

in Setup Menu

◇1. New registration

Face Registration

Set to On

Click Add Button

◇1. New registration (continue)

Face Registration

180x200

2. Entrance2. Entrance

(3)Face registration with double-clicking

◇2. Face Registration from Playback

Playback image can be selected from HDD (cam #1 only) or SD card (n3r file only).

Face Registration

(1)Do search & playbackfor face registration(2)Pause playback appearing face frame

◇3. Sensitivity Setup & Recognition On/Off Setup

Face Registration

Select sensitivity level:1(Low)-5(High)

Select recognition On/Off(Up to 8 faces can be “On”, although up to 16 faces can be registered)

“Auto image scan” Buttonfor improvement of accuracy

More effective face image for matching is automatically detected, during 3 seconds before and after face image

selected manually.

◇4. Auto image scan

Face Registration

“Setup area” buttonPlease see next page.

2. Entrance2. Entrance

◇5. Detection Area Setup

Face Registration

Up to 4 areas for matching can be set.(1) Click “Fix area” Button(2) Write rectangular (with clicking left-upper corner

and right lower corner).

11

22

33

You can avoid irrelevant faces,for example, face on a poster.

Operation withFace Matching

Operation

(1)Face thumbnail appears

◇If face is matched…

(2)Face alarm is reported by,Buzzer / Email / Panasonic alarm / Terminal output

Face alarm 1ch

Operation◇Search from face alarm log

2009/12/20 20:15:20 Cam1 Person01

You can search and playback from past face matching alarm logs

Specifications ofFace Matching

Camera Spec for Face Detection

i-PRO camera can detect up to 8 faces at the same time.

At least 48pixel x 48pixel face frame is required for facedetection (in case of SXVGA picture).1,28

0

960

1,280

960

4848

Not detectedless than 48x48 face

Detectedmore than 48x48

face

You should take care of many faces detected,

because it will take much time that recorderprocesses them for matching.

Recorder Spec for Face Matching

NV200 can process certain range of sizes of face,from 125x125 to 300x300.

1,280

960

Camera can detect

over 48x48 faces.

6060

150

150

200

200

350

350

1,280

960

NV200 can treatfrom 125x125

to 300x300 faces.

6060

150

150

200

200

350

350

Faces out of range,will be discarded

automatically,in both of registration

and matching.*The reason why over 125x125 is required, is for accuracy.*The reason why under 300x300 is required, is for reduction of processing load.

*The reason why over 125x125 is required, is for accuracy.*The reason why under 300x300 is required, is for reduction of processing load.

“Face missing” is likely

to happen, if facebuffer overflows.

“Face missing” is likely

to happen, if facebuffer overflows.

Recorder Spec for Face Matching

NV200 can process 2 faces per a second.Note that in condition of many faces, it will take much time for matching and delay of alarm report is likely to occur.

NV200 has 25 face buffers.Note that face information over 25 will be discarded.So in condition of many faces, “face missing” will be likely to happen.

Camera can detect (transmit) up to 8 faces

simultaneously.

NV200 can process only 2 faces per

second.

RecommendedCamera Installation and

Settings

Recommended Camera Installation and Setup

1,280

960

(a)

Please adjust camera angle of view, face width (a) to be in a range of 125 pixels to 300 pixels.

(1)Camera angle of view

For increasing accuracy of matching, please install and setup acamera for face matching with taking care of following items.

Recommended Camera Installation and Setup

Height

θ

Camera

θ

Camera

Subject

(2) Camera angle of depression

Please adjust camera angle of depression (θ) to be less than 15 degrees.

For increasing accuracy of matching, please install and setup acamera for face matching with taking care of following items.

Recommended Camera Installation and Setup

For increasing accuracy of matching, please install and setup acamera for face matching with taking care of following items.

(3)Camera settings

Compression H.264 Automatically set by NV200

Resolution 1280x960

Automatically set by NV200

Frame rate 5ips Automatically set by NV200

Image quality 4096kbps

Automatically set by NV200

Refresh interval 5[s] Automatically set by NV200

Super Dynamic OFF Automatically set by NV200

Adaptive black stretch OFF Automatically set by NV200

Back light compensation (BLC)

OFF Automatically set by NV200

Fix shutter 1/100 fix Automatically set by NV200

DNR LOW Automatically set by NV200

Black & white mode OFF Automatically set by NV200

AGC ON(High) Automatically set by NV200

Mask area Please set manually, if there are too luminous places.

Almost all parameters of a camera are set automatically by NV200, for matching accuracy.

*These parameters are determined experimentally, and recommended not to be changed.