Image processing apparatus for character recognition, control method of the same, storage medium and image processing system

Patent metadata

Field	Value
Publication number	US-11430201-B2
Application number	US-202017133219-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Dec 27, 2019
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

An image processing apparatus acquires a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments, recognize the characters captured for each of the plurality of captured images, and determine which one of the characters recognized from each of the plurality of captured images is to be output. The image processing apparatus determines, in accordance with a change aspect in time series of the characters recognized from each of the plurality of captured images, which one of the characters recognized from each of the plurality of captured images is to be output.

First claim

What is claimed is:

1. An image processing apparatus comprising:
one or more processors; and
a memory storing instructions which, when the instructions are executed by the one or more processors, cause the image processing apparatus to function as:
a recognition unit configured to acquire a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments and that changes in time series, and recognize the characters captured for each of the plurality of captured images; and
a determination unit configured to determine which one of the characters recognized from each of the plurality of captured images is to be output,
wherein the determination unit determines, in accordance with which one of a first aspect, a second aspect and a third aspect a change in time series of the characters recognized from each of the plurality of captured images is, which one of the characters recognized from each of the plurality of captured images is to be output.

2. The image processing apparatus according to claim 1 , wherein, in a case where the characters recognized from each of the plurality of captured images are three types of characters, which corresponds to the first aspect, the determination unit determines, among the characters recognized from each of the plurality of captured images, a character recognized from a last captured image as a character to be output.

3. The image processing apparatus according to claim 1 , wherein, in a case where the characters recognized from each of the plurality of captured images are two types of characters, which corresponds to the second aspect, the determination unit determines, among the characters recognized from each of the plurality of captured images, a character recognized from the largest number of images as a character to be output.

4. The image processing apparatus according to claim 1 , wherein, in a case where the characters recognized from each of the plurality of captured images are an identical character, which corresponds to the third aspect, the determination unit determines the recognized character as a character to be output.

5. The image processing apparatus according to claim 1 , wherein the single character includes 7, 14, or 16 segments and is displayed by a display.

6. The image processing apparatus according to claim 1 , wherein the recognition unit recognizes the single character in accordance with patterns of a lighting state and a non-lighting state of the plurality of segments.

7. An image processing system comprising:
an image capturing unit configured to generate a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments; and
an image processing apparatus comprising:
one or more processors; and
a memory storing instructions which, when the instructions are executed by the one or more processors, cause the image processing apparatus to function as:
a recognition unit configured to acquire a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments and that changes in time series, and recognize the characters captured for each of the plurality of captured images; and
a determination unit configured to determine which one of the characters recognized from each of the plurality of captured images is to be output,
wherein the determination unit determines, in accordance with which one of a first aspect, a second aspect and a third aspect a change in time series of the characters recognized from each of the plurality of captured images is, which one of the characters recognized from each of the plurality of captured images is to be output.

8. A control method of an image processing apparatus, the control method comprising:
acquiring a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments and that changes in time series, and recognizing the characters captured for each of the plurality of captured images; and
determining which one of the characters recognized from each of the plurality of captured images is to be output,
wherein the determining includes determining, in accordance with which one of a first aspect, a second aspect and a third aspect a change in time series of the characters recognized from each of the plurality of captured images is, which one of the characters recognized from each of the plurality of captured images is to be output.

9. A non-transitory computer-readable storage medium comprising instructions for performing the control method of an image processing apparatus, the control method comprising:
acquiring a plurality of captured images of characters captured in time series, each of the characters including a plurality of segments and that changes in time series, and recognizing the characters captured for each of the plurality of captured images; and
determining which one of the characters recognized from each of the plurality of captured images is to be output,
wherein the determining includes determining, in accordance with which one of a first aspect, a second aspect and a third aspect a change in time series of the characters recognized from each of the plurality of captured images is, which one of the characters recognized from each of the plurality of captured images is to be output.

Assignees

• Canon Kk

Inventors

• MIYAKE Yuuya

Classifications

• G06V10/40

  Extraction of image or video features · CPC title

• G06V10/23 Primary

  based on positionally close patterns or neighbourhood relationships · CPC title

• G06V2201/02

  Recognising information on displays, dials, clocks · CPC title

• G06V10/242

  by image rotation, e.g. by 90 degrees · CPC title

• G06V10/443

  by matching or filtering · CPC title