1. AOCR Arabic Optical Character Recognition ABDEL RAHMAN GHAREEB KASEM ADEL SALAH ABU SEREEA MAHMOUD ABDEL MONEIM ABDEL MONEIM MAHMOUD MOHAMMED ABDEL WAHAB

7. Preprocessing Problem of tilted image 1. Image rotation

8. Preprocessing 1. Process rotated image

15. Preprocessing 1. Process rotated image GRAY Scale Vs. Black/White in Rotation process Original image Gray scale Black/White

23. Preprocessing 3. Image enhancement

27. Feature Extraction الله اكبر

34. Feature Figure

36. Example: Baseline No. of black pixels above baseline (X1) No. of black pixels below baseline (X2) Two pixels with on overlap Thinning X2 X1 Feature vector

37. Feature Figure

41. Baseline Euclidean distance above baseline D1 Euclidean distance below baseline D2 Example: Thinning One pixel without overlap D2 D1 Feature vector

42. Feature Figure

44. Feature Figure

46. Feature Figure

48. Example: weight vector 1 -1 X2 X1 Feature vector Two pixels with one overlap

49. Feature Figure

56. Why Grammar? Start a1 a2 a124 a125 a3 End

59. The Dictionary

60. Recording the Data Feature extraction Transformer (Image) 2-D signal 1-D vector .wav

62. Word level MLF #! MLF! # "*/1.lab" فصل . "*/2.lab" في الفرق بين الخالق والمخلوق . "*/3.lab" وما ابراهيم وآل ابراهيم الحنفاء والأنبياء فهم . "*/4.lab" يعلمون انه لا بد من الفرق بين الخالق والمخلوق . . . فصل في الفرق بين الخالق والمخلوق وما ابراهيم وآل ابراهيم الحنفاء والأنبياء فهم يعلمون انه لا بد من الفرق بين الخالق والمخلوق

63. Phone level MLF #! MLF! # "*/1.lab" a74 a51 a88 . "*/2.lab" a74 a108 a123 a1 a86 a75 a38 a77 a123 #! MLF! # "*/1.lab" فصل . "*/2.lab" في الفرق بين الخالق والمخلوق . "*/3.lab" وما ابراهيم وآل ابراهيم الحنفاء والأنبياء فهم . "*/4.lab" يعلمون انه لا بد من الفرق بين الخالق والمخلوق . .

64. Coding the Data HCOPY MFCC Files S0001.mfc S0002.mfc S0003.mfc etc.. Wave form files ٍٍ S0001.wav S0002.wav S0003.wav etc.. Configuration File Script File

68. Initialization Process Proto Vfloors Proto HCompV hmm0

71. Creating initialized Models a125 a2 a1 Initialized model hmmdefs ~o <VecSize> 39 <MFCC_0_D_A> Initialized proto

72. Creating Macros File Vfloors file ~o <VecSize> 39 <MFCC_0_D_A> Vfloors file

73. Re-estimation Process Hmmdefs macros HERest Initialized Proto HCompV Hmmdefs macros Training Files MFc Files Phones level Transcription monophones

74. Recognition Process Hvite Trained Models Test Files Word Network wnet The dictioary dict Reconized words

75. Recognizer Evaluation HResults Reference Transcription Reconized Transcription Accuracy

77. Experimental Results