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RU2006141518A - METHOD FOR RECOGNITION OF TEXT DOCUMENTS - Google Patents

METHOD FOR RECOGNITION OF TEXT DOCUMENTS Download PDF

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Publication number
RU2006141518A
RU2006141518A RU2006141518/09A RU2006141518A RU2006141518A RU 2006141518 A RU2006141518 A RU 2006141518A RU 2006141518/09 A RU2006141518/09 A RU 2006141518/09A RU 2006141518 A RU2006141518 A RU 2006141518A RU 2006141518 A RU2006141518 A RU 2006141518A
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RU
Russia
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area
text
region
document
intensities
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RU2006141518/09A
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Russian (ru)
Inventor
Юрий Николаевич Горюнов (RU)
Юрий Николаевич Горюнов
Original Assignee
Корпораци "Самсунг Электроникс Ко., Лтд." (KR)
Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд."
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Application filed by Корпораци "Самсунг Электроникс Ко., Лтд." (KR), Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд." filed Critical Корпораци "Самсунг Электроникс Ко., Лтд." (KR)
Priority to RU2006141518/09A priority Critical patent/RU2006141518A/en
Publication of RU2006141518A publication Critical patent/RU2006141518A/en

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  • Character Input (AREA)
  • Image Analysis (AREA)

Claims (1)

Способ распознавания текстовых документов, в процессе которого сканируют текстовый документ, при этом получают электронное изображение текстового документа, разделяют электронное изображение документа на множество областей и для каждой области выполняют следующие операции:A method for recognizing text documents, during which a text document is scanned, and an electronic image of a text document is obtained, the electronic image of the document is divided into many regions, and the following operations are performed for each region: получают аппроксимированную оценку интенсивности фона данной области, при этом аппроксимируют пространство интенсивностей пикселей области по критерию средних квадратов квадратичным параболоидом в двумерном пространстве, который описывается выражением I(i,j)=A*i2+B*j2+C*i*j+D*i+E*j+F, где I(i,j) аппроксимированная интенсивность пикселя с координатами (i,j), а А, В, С, D, E, F коэффициенты, которые находят, решив оптимизационную задачу с использованием формулы приближения
Figure 00000001
get an approximate estimate of the background intensity of this region, while approximating the space of intensities of the pixels of the region according to the mean square criterion of a quadratic paraboloid in two-dimensional space, which is described by the expression I (i, j) = A * i 2 + B * j 2 + C * i * j + D * i + E * j + F, where I (i, j) is the approximated pixel intensity with coordinates (i, j), and A, B, C, D, E, F are the coefficients that are found by solving the optimization problem with using the approximation formula
Figure 00000001
 где Ir(i,j) - реальная яркость пикселя с координатами (i,j);where I r (i, j) is the real brightness of the pixel with coordinates (i, j); получают скорректированное изображение области текстового документа, при этом вычитают аппроксимированную оценку интенсивности фона области из реального распределения интенсивностей пикселей области в соответствии с выражением Icor(i,j)=Ir(i,j)-I(i,j);receive the corrected image area of the text document, while subtracting the approximate estimate of the background intensity of the area from the actual distribution of intensities of the pixels of the area in accordance with the expression I cor (i, j) = I r (i, j) -I (i, j); разделяют текст и фон скорректированного изображения области, используя пороговый метод.separate the text and background of the adjusted image of the area using the threshold method.
RU2006141518/09A 2006-11-24 2006-11-24 METHOD FOR RECOGNITION OF TEXT DOCUMENTS RU2006141518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2006141518/09A RU2006141518A (en) 2006-11-24 2006-11-24 METHOD FOR RECOGNITION OF TEXT DOCUMENTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2006141518/09A RU2006141518A (en) 2006-11-24 2006-11-24 METHOD FOR RECOGNITION OF TEXT DOCUMENTS

Publications (1)

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RU2006141518A true RU2006141518A (en) 2008-06-10

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RU2006141518/09A RU2006141518A (en) 2006-11-24 2006-11-24 METHOD FOR RECOGNITION OF TEXT DOCUMENTS

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RU (1) RU2006141518A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2538941C1 (en) * 2013-06-14 2015-01-10 Общество с ограниченной ответственностью "Аби Девелопмент" Recognition quality enhancements by increasing image resolution
RU2571379C2 (en) * 2013-12-25 2015-12-20 Общество с ограниченной ответственностью "Аби Девелопмент" Intelligent electronic document processing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2538941C1 (en) * 2013-06-14 2015-01-10 Общество с ограниченной ответственностью "Аби Девелопмент" Recognition quality enhancements by increasing image resolution
RU2571379C2 (en) * 2013-12-25 2015-12-20 Общество с ограниченной ответственностью "Аби Девелопмент" Intelligent electronic document processing

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Effective date: 20081210