1. �� ¶

1.1. �� ¶

��경

1.2. �� ¶

Image�� ISBN �� , ��
구��

2. 1D Barcode Image Recognition ¶

2.1. Symbology ¶

1�� 기 �� .
��, �� 규��. �� 규�� 거�� .

2.1.1. Bar and Space ¶

Bar�� , Space�� , 각각 Black, White��고 ��기�� .

2.1.2. X-dimension ¶

�� Bar �� Space(�� 길��)�� .

2.1.3. Quite Zone ¶

�� 게 ��기 ��, �� X-dimension�� 10�� Space�� .
�� 개 ��. �� 고, �� 과�� 기 �� 기 �� .

2.1.4. Check Digit ¶

�� 경�� 기 ��. �� .

2.2. EAN-13 Symbology ¶

EAN-13�� 13�� (Check Digit ��)�� 거�� .
EAN-13�� (��) : http://www.barcodeisland.com/ean13.phtml

2.2.1. �� 구�� ¶

1�� bar, 0�� space�� . X��
Left(Start) Guard
- 101
Left Characters
- 0XXXXX1 * 6 (space�� bar�� )
Center Guard
- 01010
Right Characters
- 1XXXXX0 * 6 (bar�� space�� )
Right(End) Guard
- 101
Start, End Guard�� 과 �� .
Center Guard�� Left Characters�� Right Characters�� 구�� .
Left Characters�� Right Characters�� 각각 6�� .
�� Left Characters�� Encoding�� . (�� Encoding�� )
Right Characters�� Check Digit ��.

2.2.2. X-dimension ¶

�� 꺼�� Bar �� Space�� 길�� X-dimension�� 4��.

2.2.3. Check Digit ¶

EAN-13�� Check Digit�� , �� 12�� .
각 12�� 곱�� 고, �� 값�� 10�� 10�� Check Digit�� .
- �� 1, 3, �� . �� 1�� 곱��고, ... , �� 3�� 곱��.

# Python
def generate_isbn_check_digit(numbers):	# Suppose that 'numbers' is 12-digit numeric string
    sum = 0;
    for i, number in enumerate(numbers):
        if i%2 == 0:
            sum += int(number) * 1
        else:
            sum += int(number) * 3
    return 10 - sum % 10

2.2.4. Encoding ¶

2.2.4.1. Character ¶

0�� space, 1�� bar�� .

Character	Left(Odd)	Left(Even)	Right
0	0001101	0100111	1110010
1	0011001	0110011	1100110
2	0010011	0011011	1101100
3	0111101	0100001	1000010
4	0100011	0011101	1011100
5	0110001	0111001	1001110
6	0101111	0000101	1010000
7	0111011	0010001	1000100
8	0110111	0001001	1001000
9	0001011	0010111	1110100

Encoding�� 게 ��기 �� .
Left(Odd), Right�� 각각�� 게 �� .
Left(Even), Right�� 게 �� .
0 �� 1�� 길게 �� 4개��.
Left�� 0, �� 1��고, Right�� 그 ��.
- �� 5개(32 ��)�� 구��, Left(Odd), Left(Even) �� 겹�� .
�� 0, 1�� 구�� 그 �� 4개��.
- ��, �� 기 �� 2개�� Bar�� 2개�� Space�� .

2.2.4.2. First Number ¶

�� 12개��. �� Left Character�� . �� 8801067070256 �� EAN-13 �� , �� '8'�� 801067070256 ��고, �� Left Character�� 801067�� 고 �� .

3. Image Processing (with Google Android) ¶

3.1. YUV Image Format ¶

Y(�� , �� 기), U(Cb, �� ), V(Cr, �� )

3.1.1. Planar and Packed ¶

Packed�� Y, U, V�� .
Planar�� Y, U, V�� .

3.1.2. NV21 (Planar) ¶

�� 공�� 고 ��.
Planar Format��, �� 기�� Y �� 고, 그 �� 기�� U, V �� .

3.1.3. YV12 ¶

공�� API level 12(�� 3.1.x)�� 고 ��.

3.2. Threshold ¶

�� , Object �� 게 ��기 ��
�� 계값(�� 기값)�� , �� .

3.2.1. Global Threshold ¶

�� 계값�� .

3.2.2. Adaptive Threshold ¶

�� 거��, 그�� 경�� Global Threshold�� 기�� 결과�� 기 ��.

ISBN_Barcode_Image_Recognition

Contents

1. �� ¶

1.1. �� ¶

1.2. �� ¶

2. 1D Barcode Image Recognition ¶

2.1. Symbology ¶

2.1.1. Bar and Space ¶

2.1.2. X-dimension ¶

2.1.3. Quite Zone ¶

2.1.4. Check Digit ¶

2.2. EAN-13 Symbology ¶

2.2.1. �� 구�� ¶

2.2.2. X-dimension ¶

2.2.3. Check Digit ¶

2.2.4. Encoding ¶

2.2.4.1. Character ¶

2.2.4.2. First Number ¶

3. Image Processing (with Google Android) ¶

3.1. YUV Image Format ¶

3.1.1. Planar and Packed ¶

3.1.2. NV21 (Planar) ¶

3.1.3. YV12 ¶

3.2. Threshold ¶

3.2.1. Global Threshold ¶

3.2.2. Adaptive Threshold ¶

ISBN_Barcode_Image_Recognition

Contents

1. ������������ ¶

1.1. ������ ¶

1.2. ������ ¶

2. 1D Barcode Image Recognition ¶

2.1. Symbology ¶

2.1.1. Bar and Space ¶

2.1.2. X-dimension ¶

2.1.3. Quite Zone ¶

2.1.4. Check Digit ¶

2.2. EAN-13 Symbology ¶

2.2.1. ��������� 구��� ¶

2.2.2. X-dimension ¶

2.2.3. Check Digit ¶

2.2.4. Encoding ¶

2.2.4.1. Character ¶

2.2.4.2. First Number ¶

3. Image Processing (with Google Android) ¶

3.1. YUV Image Format ¶

3.1.1. Planar and Packed ¶

3.1.2. NV21 (Planar) ¶

3.1.3. YV12 ¶

3.2. Threshold ¶

3.2.1. Global Threshold ¶

3.2.2. Adaptive Threshold ¶

1. �� ¶

1.1. �� ¶

1.2. �� ¶

2.2.1. �� 구�� ¶