Computational Mathematicsematics

Download e-book for kindle: Audio- and Video-based Biometric Person Authentication: by David E. Benn, Mark S. Nixon, John N. Carter (auth.), Josef

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By David E. Benn, Mark S. Nixon, John N. Carter (auth.), Josef Bigün, Gérard Chollet, Gunilla Borgefors (eds.)

ISBN-10: 3540626603

ISBN-13: 9783540626602

This e-book constitutes the refereed court cases of the 1st overseas convention on Audio- and Video-based Biometric individual Authentication, AVBPA'97, held in Crans-Montana, Switzerland, in March 1997.
The forty nine revised papers provided have been rigorously reviewed and chosen by way of this system committee for inclusion within the e-book; additionally incorporated are 4 invited contributions. The papers are prepared in sections on facial expression localisation, lip and facial movement, visible non-face biometrics, face-based authentication, text-dependent speaker authentication, text-independent authentication, audio-video gains and fusion, and structures and applications.

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Read or Download Audio- and Video-based Biometric Person Authentication: First International Conference, AVBPA'97 Crans-Montana, Switzerland, March 12–14, 1997 Proceedings PDF

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Additional info for Audio- and Video-based Biometric Person Authentication: First International Conference, AVBPA'97 Crans-Montana, Switzerland, March 12–14, 1997 Proceedings

Sample text

This is called transfer of data by reference and is a method to transfer data back to the calling function, in this case main(). C++ allows however the programmer to use solely call by reference (note that call by reference is implemented as pointers). To see the difference between C and C++, consider the following simple examples. In C we would write int n ; n =8; f u n c (&n ) ; / £ & n i s a p o i n t e r t o n £ / .... void func ( i n t £ i ) { £ i = 1 0 ; / £ n i s changed t o 1 0 £ / ....

The function scanf is then an example of a function which receives the address of a variable and is allowed to modify it. Afterall, when calling scanf we are expecting a new value for a variable. A typical call could be scanf(‘‘% lf \n ’’, & speed_of_sound); . Consider now the following program 46 CHAPTER 3. NUMERICAL DIFFERENTIATION This program module demonstrates memory allocation and data transfer in between functions in C++ Ò
ÐÙ Ò
ÐÙ ×Ø Óº ×Ø Ð º Standard ANSI-C++ include files int main(int argc, char £argv[]) { int a: int £b; a = 10; b = new int[10]; for(i = 0; i 10; i++) { b[i] = i; } func( a,b); return 0; } End: function main() void func( int x, int £y) { x += 7; £y += 10; y[6] += 10; return; } End: function func() line 1 line 2 line 3 / line 4 line 5 line 6 line 7 line 8 line 9 line 10 line 11 There are several features to be noted.

Normally, the variable is then set to zero and the program continues. Other compilers (or compiler options) may warn you with the ’UNDERFLOW’ message and the program terminates. 3. 14) may be stored in the following way. The exponent is small and is stored in full precision. However, the mantissa is not stored fully. In double precision (64 bits), digits beyond the 15th are lost since the mantissa is normally stored in two words, one which is the most significant one representing 123456 and the least significant one containing 789111213.

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Audio- and Video-based Biometric Person Authentication: First International Conference, AVBPA'97 Crans-Montana, Switzerland, March 12–14, 1997 Proceedings by David E. Benn, Mark S. Nixon, John N. Carter (auth.), Josef Bigün, Gérard Chollet, Gunilla Borgefors (eds.)


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