Method and device for image registration, method and device for image splicing

An image registration and image stitching technology, applied in the field of image processing, can solve problems such as image stitching errors, registration errors, and increased calculations, and achieve good stitching effects, high accuracy, and accurate results

Active Publication Date: 2015-11-25
BEIJING KUANGSHI TECH +1
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Problems solved by technology

[0004] When the above image registration method is applied to printed document images, due to the large number of corner points and high similarity of the text, there are many candidate matching pairs, which significantly increases the amount

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  • Method and device for image registration, method and device for image splicing
  • Method and device for image registration, method and device for image splicing
  • Method and device for image registration, method and device for image splicing

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Embodiment Construction

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] Words are a system of symbols used by humans to communicate, and a written form of recording thoughts and events. Text is formed by simple graphics, which were closer to pictures in the early days and closer to geometric lines now. For example, the Latin alphabet is composed of simple lines, arcs and dots. Chinese characters are mainly composed of straight lines, so they are called "square Chinese characters". Images conta...

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Abstract

The invention discloses an image registration method, an image registration device, an image splicing method and an image splicing device. The image registration method comprises steps of performing character recognition on a first image and a second image, wherein the first image and the second image contain characters, generating a candidate matching pairs based on the character recognition result, choosing a self-consistent candidate matching pair from the candidate matching pairs and generating a geometry transformation from the second image to the first image according to the self-consistent candidate matching pair, and mapping the second image into the coordinate system of the first image according to the geometry transformation. The image registration method and the image registration device are small in calculation amount and accurate in registration, and because of that, the image splicing method and the image splicing device can achieve a better splicing effect under the premise that the calculation amount is small.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image registration method, an image splicing method and devices corresponding to the two. Background technique [0002] Image registration is an image processing method that uses a certain matching strategy to find out the corresponding position of a pixel in one image in another image, and then determine the transformation relationship between the two images. The existing image registration methods mainly use the point matching method. Specifically, the key points are first found by looking for the corner points in the two images, and the descriptors are extracted in the neighborhood of the key points. Afterwards, candidate matching pairs are generated based on the descriptors in the two images. Then, a set of self-consistent candidate matching pairs is selected among the candidate matching pairs, such as by voting, and a geometric transformation between images is generated....

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Application Information

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IPC IPC(8): G06T3/00G06T3/40
CPCG06T3/0068G06T3/4038
Inventor 周舒畅姚聪朱睿
Owner BEIJING KUANGSHI TECH
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