Method for quickly positioning and extracting one-dimensional and two-dimensional code graphics aiming at digital images

A technology of digital image and extraction method, applied in electromagnetic radiation induction and other directions, can solve problems such as low recognition speed, and achieve the effect of enhancing efficiency, reducing traversal range, and speeding up operation speed

Active Publication Date: 2012-09-19
SICHUAN UNIV
View PDF1 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fast positioning and extraction method for one-dimensional barcodes and two-dimensional barcodes, as the pre-pro

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quickly positioning and extracting one-dimensional and two-dimensional code graphics aiming at digital images
  • Method for quickly positioning and extracting one-dimensional and two-dimensional code graphics aiming at digital images
  • Method for quickly positioning and extracting one-dimensional and two-dimensional code graphics aiming at digital images

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The basic thought of the present invention is as follows: a kind of one-dimensional bar code and two-dimensional bar code detection method based on digital image processing technology, see figure 1 , the present invention is mainly composed of a digital graphic sensor, a distance sensor supplementary light device, a positioning indicating device and an embedded computer or an industrial control computer. The computer directly reads the digital image data by driving the digital camera, and then transmits the data to the intelligent detection module of one-dimensional and two-dimensional codes: perform the following detection steps:

[0036] 1) Read the image sampled by the sensor;

[0037] 2) Convert the color image to a grayscale image;

[0038] 3) Perform preprocessing such as smoothing and denoising on the image;

[0039] 4) Calculate the upper and lower envelopes for image signals of different scales;

[0040] 5) Calculate the difference between the upper and lowe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for quickly positioning and extracting one-dimensional and two-dimensional code graphics aiming at digital images. The method comprises the following steps of: analyzing envelopes of a high-frequency component for observing an image signal, extracting a region with an obvious upper and lower envelope difference under each scale as a probable bar code region, further analyzing the probable bar code region, extracting geometric parameters from partial information and performing adaptive binarization, supplying a result to a subsequent scanning module, and sampling and decoding to output information stored by a bar code according to a geometric relation of a black and white module. Equipment required in the method is relatively simple and can be suitable for complicated backgrounds and illumination conditions; and the observed one-dimensional and two-dimensional code graphics are quickly and intelligently processed on the basis of acquisition of video signals.

Description

technical field [0001] The invention relates to a computer image processing method, in particular to a method for automatic detection and rapid extraction of one-dimensional and two-dimensional barcodes by using computer image processing technology. It belongs to the preprocessing method before barcode recognition, which can quickly locate the barcode area in the captured image, and then facilitates rapid segmentation and recognition, so that the corresponding barcode recognition algorithm can be used to speed up the system response speed in a statistical sense. Background technique [0002] The rapid development and progress of society in recent years has prompted one-dimensional and two-dimensional barcodes to be widely used in industrial production and daily life as key technologies in the field of the Internet of Things. They are information media between people, goods and smart devices such as computers. Compared with other reading methods, barcode technology has the ad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06K7/10
Inventor 王俊峰唐鹏陈懿高琳高志刚
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap