US 11,238,269 B2 · Encoding and decoding method and information recognition device using the same

Abstract

There is provided an encoding and decoding method and an information recognition device using the same. A code block includes a center coding region and a peripheral coding region arranged around the center coding region. The encoding and decoding method uses the feature of at least one microdot included in the center coding region as codes. The encoding and decoding method uses the feature of at least one microdot included in the peripheral coding region as codes. The encoding and decoding method uses the relative feature between the center coding region and the peripheral coding region as codes. The information recognition device compares the read feature with pre-stored features to decode information such as position codes, object codes, parameter codes and control codes.

Claims12

Dependent claims

An encoding method of one feature code among multiple feature codes on a read medium, the encoding method comprising:

arranging at least one center microdot having a center coding feature;
arranging at least one peripheral microdot having a peripheral coding feature, wherein the at least one peripheral microdot is arranged around the at least one center microdot;
arranging a relative coding feature between the at least one center microdot and the at least one peripheral microdot;
determining a start direction of feature coding of the one feature code according to at least one of the center coding feature, the peripheral coding feature and the relative coding feature;
and
performing the feature coding using the center coding feature and at least one of the peripheral coding feature and the relative coding feature in a clockwise direction or a counterclockwise direction from the start direction of the one feature code.

3 more elements

An information recognition device for decoding feature codes on a read medium, the information recognition device comprising:

an image sensor configured to capture a current image;
a memory configured to previously store a plurality of predetermined feature codes each comprising at least one center microdot having a center coding feature, at least one peripheral microdot having a peripheral coding feature and a relative coding feature between the at least one center microdot and the at least one peripheral microdot;
and
a processor configured to
analyze a feature code in the current image,
compare the analyzed feature code with the plurality of predetermined feature codes in the memory,
determine a start direction and a coding direction from the start direction in a clockwise direction or a counterclockwise direction within the analyzed feature code in the current image according to at least one of the center coding feature, the peripheral coding feature and the relative coding feature, and
read coding information, which corresponds to the analyzed feature code in the current image, from the memory.

5 more elements

Dependencies are inferred from the claim text.

Encoding and decoding method and information recognition device using the same

Life of this patent

Encoding and decoding method and information recognition device using the same

Life of this patent

Abstract

Claims12