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Method of discriminating colors of color based image code

一种色彩、图像的技术，应用在解码基于色彩的图像代码领域，能够解决难以辨别图像代码等问题，达到准确识别的效果

Inactive Publication Date: 2009-08-12
COLORZIP MEDIA +1
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AI Technical Summary

Problems solved by technology

However, color variations in color-based image codes, such as color codes in mobile computing environments according to various lighting, camera characteristics, and print media characteristics, make it difficult to discern color-based image codes

Method used

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  • Method of discriminating colors of color based image code
  • Method of discriminating colors of color based image code
  • Method of discriminating colors of color based image code

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Embodiment Construction

[0032] According to one aspect of the present invention, there is provided a method for classifying colors of a color-based image code, the method comprising: sampling a predetermined number of pixels from each unit constituting the color-based image code; Identifying the color of the color channel with the maximum value among the color channels as the color of each sampled pixel; and classifying the color with the highest frequency among the colors of the pixels sampled from each unit as the color of the unit.

[0033] According to another aspect of the present invention, there is provided a method of classifying colors of a color-based image code, the method comprising: sampling a predetermined number of pixels from a quiet zone of the color-based image code; obtaining an average value of the sampled number of pixels brightness value; compensate the average value of the color channel of each unit constituting the color-based image code with the average brightness value; and c...

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Abstract

Provided is a method of classifying colors of a color based image code. The colors of each cell forming the color based image code are classified by sampling a predetermined number of pixels from each cell and then applying a max channel based clustering method, a white balance based color clustering method, a single-linkage algorithm based color classification method, a K-means algorithm based color classification method, or the like. Accordingly, the colors of an image code can be accurately recognized despite of a color distortion due to characteristics of a camera, a printing medium, etc.

Description

technical field [0001] The invention relates to a method of decoding color-based image codes. More specifically, it relates to a method of classifying the color of each unit of an image code during decoding. Background technique [0002] Extended reality and mixed reality services and business services, such as mobile commerce, using barcodes with black and white patterns have been studied for nearly a decade. Recently, color-based image codes, such as color codes, have been proposed for mobile computers. However, the color of color cells constituting the color-based image code varies depending on lighting, printing media, and conventional cameras, and thus, it is difficult to recognize the color-based image code compared to black and white marks. [0003] Recent studies have focused on user interfaces, which provide users with data or services in a virtual world by embedding label media into physical objects and identifying the physical objects with a reader. Label media...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06V10/56
CPCG06K19/06037G06K2019/06225G06K7/14G06K9/4652G06V10/56G06T5/00G06T7/00G06T7/40G06F18/00
Inventor 郑哲虎韩铎敦李尚龙
Owner COLORZIP MEDIA
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