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Handwriting track extraction method and device based on image frame, storage medium and equipment

A handwritten trajectory and extraction method technology, applied in the field of image recognition, can solve the problem of low success rate, and achieve the effect of improving the success rate of extraction

Active Publication Date: 2022-06-21
江西三有果科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a handwriting trajectory extraction method, device, storage medium and equipment based on image frames, aiming at solving the problem of low success rate in the prior art when extracting handwriting trajectory

Method used

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  • Handwriting track extraction method and device based on image frame, storage medium and equipment
  • Handwriting track extraction method and device based on image frame, storage medium and equipment

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Embodiment 1

[0056] The technical features of each of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features of the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It should be regarded as the scope described in this specification.

[0057] Those skilled in the art will understand that the logic and / or steps shown in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, which can be specifically implemented in on any computer-readable storage medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from an instruction execution system, apparatus, or device and execute them), Or used in com...

Embodiment 2

Embodiment 3

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Abstract

The invention discloses a handwriting track extraction method and device based on image frames, a storage medium and equipment. The method comprises the following steps: acquiring image data of continuous frames acquired by an image acquisition device arranged in an intelligent pen based on handwriting motion; determining a relative displacement between any two adjacent frames of images according to the image data to obtain a plurality of adjacent frame displacements; obtaining an adjacent frame displacement sequence according to the plurality of adjacent frame displacements, and obtaining a movement track of the image acquisition device during the handwriting movement according to the adjacent frame displacement sequence; and sequentially rotating and zooming the moving track to obtain a target moving track, and translating the target moving track according to any coordinate value decoded from the image data on the handwriting plane to obtain a handwriting track. The problem that in the prior art, the success rate is low when the handwriting track is extracted is solved.

Description

technical field [0001] The present invention relates to the technical field of image recognition, in particular to a method, device, storage medium and equipment for extracting handwriting traces based on image frames. Background technique [0002] Dot-matrix smart pen is a new type of handwriting trajectory acquisition device emerging in recent years. It is common in children's audiobooks or student teaching supplementary books and other publications that print dot-matrix QR codes. Most of them depend on the printing quality of the dot-matrix QR code and the image acquisition and decoding of the dot-matrix QR code. [0003] This requires that each frame of image captured by the dot-matrix smart pen contains complete dot-matrix QR code point information. Missing code point. In addition, since the dot-matrix QR code is decoded after imaging based on the carbon-containing principle, if the dot-matrix imaging is interfered by the trajectory of a carbon-containing ordinary re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V30/32G06V30/14G06K17/00
CPCG06K17/0025
Inventor 胡楚煊万强张乐
Owner 江西三有果科技有限公司
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