BioChaves Project 
Multimodal samples


FILE NAME EXAMPLES: IR00003T005_BioChaves.bmp, KS00003T003_BioChaves.txt...

IR - IRis bitmap from conventional webcam (in close). 
ER - EAr bitmap from conventional webcam (in close).
HA - HAnd bitmap from conventional webcam (static distance).
WR - Online WRiting, non-expensive tablet.  
KS - KeyStroke: time interval between strokes - conventional keyboard from Brazil. 
MO - MOuse, position and timing of subjects when using mouse. 
VO - VOice, time samples (PCM) recorded with conventional PC microphone. Sampling rate = 22050 Hz.



T - True Sample or
F - False Sample (forgery)  
00003 - Sample counter # 3
005 - subject counter # 5


FILE FORMAT:


a) IR, ER, HA: Bitmap file

b) WR: ASCII files. Example:

394 486 0
247 325 1.059531
247 326 1.089531
248 326 1.109531
246 326 1.219531
245 327 1.249531
 .   .    .   
 .   .    .   
 .   .    .   
 .   .    .   
867 331 13.879531
870 331 13.899531            
(X) (y) (total time in sec.)
  

c) KS: ASCII files. Example: 

99		0.000000
104		0.109375
111		0.242188
99		0.218750
111		0.390625
 .	   	   .
 .	   	   .
 .         	   .
97		0.171875
120		0.238281
105		0.171875
(KEY CODE)	(time interval in sec.)



d) MO: ASCII files. Example: 

394 486 0
247 325 1.059531
247 326 1.089531
248 326 1.109531
246 326 1.219531
245 327 1.249531
 .   .    .   
 .   .    .   
 .   .    .   
 .   .    .   
867 331 13.879531
870 331 13.899531            
(X) (y) (total time in sec.)
  


e) VO: ASCII files. Example: 

4447
4676
4623
4142
3206
2143
959
-70
-873
-1322
-1710
-1825
-1815
-1837
-1686
-1594
-1578
-1620
-1690
-1937    
 .
 .
 .
-327
-320
-280
-267
      
(3 seconds of samples at 22050 Hz. Linear quantization with 2^16 bits per sample. Sample values between -32768 and 32768 )
