Machine vision-based handwriting recognition method and system

A handwriting recognition and machine vision technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of inaccurate written trajectory information and user's finger discomfort, and achieve the effect of low cost and convenient use.

Inactive Publication Date: 2012-07-25
BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Existing technologies are often limited by time and space, and long-term holding equipment and touching will cause discomfort to the user's fingers; using a mouse and other methods, the trajectory information written is often inaccurate

Method used

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  • Machine vision-based handwriting recognition method and system
  • Machine vision-based handwriting recognition method and system
  • Machine vision-based handwriting recognition method and system

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specific Embodiment 1

[0078] Such as image 3 As shown, the acquisition unit of this embodiment adopts a single camera to acquire the target image. After removing the interference information and background information from the image collected by the camera, the trajectory information is extracted through the feature extraction unit and the image processing unit combined with the feature points of the target; the extracted target trajectory information mainly includes the following contents:

[0079] First obtain and store the feature points of the target by the feature extraction unit. In this embodiment, the feature points of the target are the center of gravity of the target; as long as the shape of the target object does not change greatly, the position of the center of gravity of the object is certain. Therefore, the position of the center of gravity of the target object at a certain moment is selected here as a point in the trajectory. The center of gravity is calculated as follows:

[0080...

specific Embodiment 2

[0093] Such as Figure 7 As shown, the acquisition unit of this embodiment adopts two cameras to acquire target images. After removing the interference information and background information from the image collected by the camera, the trajectory information is extracted through the feature extraction unit and the image processing unit combined with the feature points of the target; the extracted target trajectory information mainly includes the following contents:

[0094] First obtain and store the feature points of the target by the feature extraction unit. In this embodiment, the feature points of the target are the center of gravity of the target; as long as the shape of the target object does not change greatly, the position of the center of gravity of the object is certain. Therefore, the position of the center of gravity of the target object at a certain moment is selected here as a point in the trajectory. The center of gravity is calculated as follows:

[0095] , ...

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Abstract

The present invention provides a machine vision-based handwriting recognition method and a machine vision-based handwriting recognition system. The method comprises: collecting a target image, obtaining and storing the characteristic points of the target image, generating trace information of the characteristic points, and processing and recognizing the trace information; recognizing characters or symbols written by a user by using information of the handwriting trace captured by a camera. In this way, the traditional devices such as touch screens, electromagnetic induction screens, handwriting boards, and mouse are replaced, and desired characters can be written by waving fingers instead of walking to a computer or a touch media to operate.

Description

[0001] technical field [0002] The invention belongs to the technical fields of computer vision, image processing and pattern recognition, and in particular relates to a handwriting recognition method and system of machine vision. [0003] Background technique [0004] Common computer input devices such as keyboard, mouse, handwriting pad, touch pad and touch screen have mostly become standard peripherals or commonly used peripherals of computers. At present, people have to accept the respective deficiencies of these devices while using computers. Summarizing the characteristics of these commonly used computer input devices, they have some disadvantages as follows. [0005] Keyboard: It often needs to be used in combination with the mouse. It is difficult to quickly move the cursor to any position on the screen through the keyboard, and it is also difficult to use the keyboard to perform continuous operations such as drawing. The keyboard originated from the West, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/68
Inventor 郭鹏程懿远王嘉鲍东山
Owner BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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