Method for extracting document image by pick-up device

Abstract

The invention relates to a method for extracting a document image by a pick-up device. The method comprises the following steps of: mounting a laptop computer; providing a document fixer; placing a document in the document fixer in a way of making the midpoint of the long edge of the document aim at the midpoint of the document fixer; moving the document fixer according to the size of the document to make the midpoint of the document fixer aim at a symbolic label on the laptop computer; and extracting the document image and processing the document image. In the method, the document is positioned by making the document fixer aim at the label on the laptop computer, so that the image which is clear and not skew can be obtained.

Description

Method for extracting document image by using camera device technical field The invention relates to a method for obtaining document images, in particular to a method for extracting document images by using an imaging device. Background technique The camera device is generally used for taking photos or recording videos, and the camera device is applied to a network camera to provide network video conferencing functions is becoming more and more widely, and the camera device is built into a notebook computer more and more widely. With the development of science and technology, the electronicization of text documents is becoming more and more popular. Generally, document files are scanned by scanning devices and stored as electronic files (generally stored as PDF files). However, not every computer is equipped with a scanning device, and the document data is only simple documents such as single-sided data or business cards. Users can use the camera device around the compute...

AI Technical Summary

Problems solved by technology

However, many problems will occur in the process of obtaining the file image by using the above method to shoot the file, the most common problem is the problem of image skew: first, the file is placed on the work surface because there is no fixed reference point, so every time the file There are slight errors in the position on the working surface, because these errors are likely to cause inaccurate focus when the camera device performs image extraction, and it is impossible to obtain a document image with better clarity

Second, due to the insufficient horizontal shooting range of the camera device, when a large-sized document needs to be photographed, it is impossible to obtain a complete document image in one shot, so the document must be divided into the upper half and the lower half, and two Take a second shot, and then combine the two obtained images with image processing technology

And when the user uses the image capture device to photograph the upper half of the document, he must move the document so that the lens of the image capture device is aimed at the lower half of the document for shooting, but in the process of moving the document, the document does not have a reliable reference device or The reference point, so that the file is easily skewed after being moved and cannot be parallel or at the same horizontal position as the file before the move, so that the image in the lower half of the file will be skewed and cannot be combined with the image in the upper half of the file, while Have to retake until you get an image of the bottom half of the file that matches the image angle of the top half of the file

Obtaining document images with insufficient clarity or skewed as described above has been bothering users. Therefore, there is a need for a method of obtaining document images that are clear and not skewed

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