Pen type image scanning and splicing method and device

An image scanning and pen-style technology, applied in the field of image processing, can solve problems such as large number of images, algorithm time complexity should not be too high, difficult feature matching, etc.

Active Publication Date: 2016-12-07
深圳市优象计算技术有限公司
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Problems solved by technology

[0007] The image stitching method used for pen scanners is aimed at images in the form of one row and one row. There is less overlap between the two images, and it is difficult to perform effective feature matching. Moreover, the number of images is large, and the time complexity of the algorithm is required not to be too high. High, there is no suitable method for this application background in the existing image stitching technology

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  • Pen type image scanning and splicing method and device
  • Pen type image scanning and splicing method and device
  • Pen type image scanning and splicing method and device

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0050] The images output by the pen scanner are all scanned images line by line. There is no precise control of the direction during the scanning process, and it is completely manual operation, which inevitably causes the image to have different degrees of inclination. In the past, images output by cameras or large-scale scanners had only one tilt angle for the entire layout, but the output images of pen scanners are different. As long as there is a slight change in the scanning process of the hand-held pen scanner, the images will appear in various angles segmental inclination.

[0051] Therefore, the image stitching method for pen scanners is divided into two parts, the first part is image preprocessing, that is, the tilt correction part, such as figure 1 As shown, the specific steps are as follows:

[0052] n sequential images from the pe...

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Abstract

The invention belongs to the field of image processing, and in particular relates to a pen type image scanning and splicing method and device. The pen type image scanning and splicing method comprises the steps that (S1) a pen type scanner scans a document to acquire scanned images of the scanned document; (S2) tilt correction preprocessing is carried out on the scanned images; and (S3) the images after tilt correction preprocessing are spliced to output a completely spliced image. The device which realizes the method comprises an image acquiring module, an image preprocessing module and an image splicing module. According to the image splicing method provided by the invention, for the characteristics of pen type scanned images, segmented tilt correction is carried out on line-scanned images; reference images and processed images are matched based on feature points; a parallax distance constraint is adopted to eliminate mismatching; the accuracy of image registration is greatly improved; and the supporting image splicing method has the advantages of small computational complexity and good image splicing effect, and is suitable for a pen type scanner.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method and device for scanning and splicing pen images. Background technique [0002] With the advancement of science and technology and the continuous prosperity of human society and culture, the number of books, newspapers, scientific literature and other documents reflecting and reporting various information has exploded. How to collect and organize these materials has become a huge project. If it is stored as a traditional book and periodical material, it not only needs to provide a huge physical storage space, but also needs to treat the book and periodical material to prevent fire, moisture, and insects. Obviously, this method is becoming more and more unfeasible. [0003] Digitizing all kinds of traditional printed books and periodicals and turning them into electronic resources for preservation has undoubtedly become the mainstream direction of development. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06T3/40G06T3/60
CPCG06T3/0068G06T3/4038G06T3/608
Inventor 罗文峰
Owner 深圳市优象计算技术有限公司
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