OCRed

OCRed（发音为OCR'd）为特定文本材料提供了聪明、简单、直观的OCR包装功能。您不想学习OCR或帮助您执行OCR的库，但您需要OCR一些内容？这个友好的社区库隐藏了所有这些内容，在简单的函数ocr_meaningful_text()下。

换句话说，您不需要手动预处理，寻找OCR库，学习库，最后得到您所寻找的内容，而是使用OCRed。

另一方面，如果您想学习OCR并自行使用著名的OCR库，那么这个库不适合您。但是，它仍然可以作为您旅程的良好开端！

结构

OCR使用OCR类执行，图像预处理使用Preprocessor类执行。所有详细信息都在文档中。

安装

1. 为您的操作系统安装Tesseract并将其添加到PATH

安装指南可在此处找到。

2. 使用pip魔法。

OCRed使用现代Python打包，可以使用pip进行安装。

python -m pip install ocred

使用示例

# OCRing a book
import ocred

ocr = ocred.OCR(
    False,  # is_scanned -> to preprocess the image
    "path/to/an/image",  # path
)
ocr.ocr_meaningful_text(save_output=True)

# OCRing a signboard
import ocred

ocr = ocred.OCR(
    True,  # is_scanned -> sign boards don't need to be preprocessed
    "path/to/an/image",  # path
)
extracted_text = ocr.ocr_sparse_text()
print(extracted_text)

# OCRing an invoice
import ocred

ocr = ocred.OCR(
    True,  # is_scanned -> invoices don't need to be preprocessed
    "path/to/an/image",  # path
)
extracted_text = ocr.ocr_sparse_text()
print(extracted_text)

extraxted_info = ocr.process_extracted_text_from_invoice()
print(extraxted_info)

# manually preprocessing an image
import cv2
from scipy import ndimage
from ocred import Preprocessor

preprocessed = Preprocessor("path/to/img.jpg")

# scan the image and copy the scanned image
preprocessed.scan()
orig = preprocessed.img.copy()

# remove noise
preprocessed.remove_noise()

# thicken the ink to draw Hough lines better
preprocessed.thicken_font()

# calculate the median angle of all the Hough lines
_, median_angle = preprocessed.rotate()

# rotate the original scanned image
rotated = ndimage.rotate(orig, median_angle)

# remove noise again
preprocessed = Preprocessor(rotated)
preprocessed.remove_noise()

cv2.imwrite("preprocessed.png", preprocessed.img)

测试

测试文件位于tests目录中。任何新增功能都必须添加新的测试。

要运行测试 -

pytest

一些示例

जयपुर JAIPUR 321 आगरा AGRA 554 श्री गगांनगर 242 SRIGANGANAGAR JODHPUR 261 जोधपुर

Preface  This book deals with computer architecture as well as computer organization and design. Computer architecture is concerned with the structure and behavior of the various functional modules of the computer and how they interact to provide the processing needs of the user. Computer organization is concerned with the way the hardware components are connected together to form a computer system. Computer design is concerned with the development of the hardware for the computer taking into consideration a given set of specifications. The book provides the basic knowledge necessary to understand the hardware operation of digital computers and covers the three subjects associated with computer hardware. Chapters 1 through 4 present the various digital components used in the organization and design of digital computers. Chapters 5 through 7 show the detailed steps that a designer must go through in order  to design an elementary basic computer. Chapters 8 through 10 deal with the organization and architecture of the central processing unit. Chapters 11 and 12 present the organization and architecture of input-output and memory. Chapter 13 introduces the concept of multiprocessing. The plan of the book is to present the simpler material first and introduce the more advanced subjects later, Thus, the first seven chapters cover material needed for the basic understanding of computer organization, design, and programming of a simple digital computer. The last six chapters present the organization and architecture of the separate functional units of the digital computer with an emphasis ‘on more advanced topics.  ‘The material in the third edition is organized  in the same manner as in the second edition and many of the features remain the same. The third edition, however, offers several improvements over the second edition. All chapters  ‘two (6 and 10) have been completely revised to bring the material up to date and to clarify the presentation. Two new chapters were added: chapter 9 on pipeline and vector processing, and chapter 13 on multiprocessors. Two sections deal with the reduced instruction set computer (RISC). Chapter 5 has been revised completely to simplify and clarify the design of the basic computer. New problems have been formulated for eleven of the thirteen chapters.  ‘The physical organization of a particular computer including its registers

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