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Device, method, and program for creating a two-dimensional barcode image, system and method for information transmission, and device, method, and program for decoding the two-dimensional barcode

An image generation device and two-dimensional barcode technology, applied to a device, program, and program for two-dimensional barcode image generation, can solve the problems of low resolution and aliasing of display devices

Inactive Publication Date: 2007-06-06
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the frequency band of the transmission path to the display device is narrow, or the resolution of the display device is low, aliasing occurs in the spatial frequency region and causes errors.

Method used

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  • Device, method, and program for creating a two-dimensional barcode image, system and method for information transmission, and device, method, and program for decoding the two-dimensional barcode
  • Device, method, and program for creating a two-dimensional barcode image, system and method for information transmission, and device, method, and program for decoding the two-dimensional barcode
  • Device, method, and program for creating a two-dimensional barcode image, system and method for information transmission, and device, method, and program for decoding the two-dimensional barcode

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0047] In this embodiment, as an example of an information delivery system, a case will be described in which information to be delivered is generated as a color image based on a two-dimensional barcode, broadcast and displayed on a display device on a TV, and the displayed color image is captured by a portable information terminal, and decode the information.

[0048] First, the information transfer system will be described. FIG. 1 is a block diagram showing an example of the configuration of an information delivery system according to this embodiment. The information transmission system according to this embodiment is constituted by a two-dimensional barcode image generating device 1 , a transmitter 2 , a transmission path 3 , a receiver 4 , a display device 5 , and a portable information terminal 6 .

[0049] The two-dimensional barcode image generating d...

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Abstract

A two-dimensional barcode image creation device for creating a color image based on a two-dimensional barcode includes: two-dimensional barcode encoding unit for encoding the input information as a two-dimensional barcode; an up-sampling unit for performing up-sampling of the two-dimensional barcode; a luminance signal generation unit for subjecting the output of the up-sampling unit to a band limit and outputting it as a luminance signal; a blue color difference signal generation unit and a red color difference signal generation unit for outputting the change amount of adjacent information in the output of the up-sampling unit as a blue color difference signal and a red color difference signal, respectively.

Description

technical field [0001] The present invention relates to a two-dimensional barcode image generating device for generating two-dimensional barcode images, a two-dimensional barcode image generating method, and a two-dimensional barcode image generating program for decoding two-dimensional barcodes generated and transmitted using them A device, a two-dimensional barcode decoding method, a two-dimensional barcode decoding program, an information transmission system that generates and transmits a two-dimensional barcode image, and reads the transmitted image to obtain information, and an information transmission method. Background technique [0002] In the past, one-dimensional barcodes and two-dimensional barcodes have been used. Both are graphics expressed in black and white, and are used as a means of conveying information through printing. Among them, the two-dimensional barcode is formed by arranging white or black squares in a matrix, and expresses information according to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G06K19/07G06K7/10H04N9/64
CPCG06K1/121
Inventor 二村和广三浦弘
Owner FUJITSU LTD