Method and apparatus for processing graphic symbol and computer-readable storage medium

An apparatus for processing a graphic symbol, comprising:

• circuitry configured to:
• obtain a luminance component image of a to-be-processed image including the graphic symbol, the graphic symbol comprising at least one of a data matrix quick code and a portable data file (PDF) quick code, wherein
• luminance of the luminance component image corresponds to a luminance channel and chromaticity of the to-be-processed image corresponds to a chrominance channel,
• the luminance channel having a sampling rate higher than the chrominance channel, and
• the obtaining the luminance component image of the to-be-processed image includes converting a color space of the to-be-processed image to a target color space for separating the luminance and the chromaticity for improved recognition of the graphic symbol;
• perform binarization processing based on the luminance component image of the to-be-processed image to output a binarized image;
• and
• perform a grayscale morphological operation based on the binarized image to output a target image.

A non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium comprising:

• a computer program stored in the medium;
• and when the computer program runs on a computer, the computer is caused to perform a method for processing a graphic symbol, the method including:
• obtaining a luminance component image of a to-be-processed image including the graphic symbol, the graphic symbol comprising at least one of a data matrix quick code and a portable data file (PDF) quick code, wherein
• luminance of the luminance component image corresponds to a luminance channel and chromaticity of the to-be-processed image corresponds to a chrominance channel,
• the luminance channel having a sampling rate higher than the chrominance channel, and
• the obtaining the luminance component image of the to-be-processed image includes converting a color space of the to-be-processed image to a target color space for separating the luminance and the chromaticity for improved recognition of the graphic symbol;
• performing binarization processing based on the luminance component image of the to-be-processed image to obtain a binarized image;
• and
• performing a grayscale morphological operation based on the binarized image to obtain a target image.