Character string recognition device

Patent metadata

Field	Value
Publication number	US-9852350-B2
Application number	US-201715642367-A
Country	US
Kind code	B2
Filing date	Jul 6, 2017
Priority date	Nov 28, 2013
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

The present disclosure prevents erroneous recognition of a character string that is not actually contained in a video. In the present disclosure, a rectangular region extraction section ( 12 ) extracts a rectangular region string from an image contained in a video created by an image capture section ( 10 ), the rectangular region being a unit region for recognition of a character string. A recognition determination section ( 14 ) determines the rectangular region to be “true” in a case where conditions (a) and (b) are met or determines the rectangular region to be “false” in a case where at least one of the conditions (a) and (b) is not met, the condition (a) being such that the rectangular region does not overlap, by a certain percentage or more, another rectangular region contained in another image in the video, the another image being an immediately previous target of translation processing, the another rectangular region containing an actually recognized character string, the condition (b) being such that the rectangular region overlaps only either a first end region or a second end region, the first end region having a predetermined width and being located in a first end of the image, the second end region having a predetermined width and being located in a second end of the image which second end is opposite the first end. A character string recognition section ( 18 ) performs a character string recognition for the rectangular region in a case where the rectangular region is determined to be “false” and skips the character string recognition for the rectangular region in a case where the rectangular region is determined to be “true.”

First claim

The invention claimed is:

1. A character string recognition device comprising:
at least one processor;
at least one memory in electronic communication with the at least one processor;
instructions stored in the at least one memory, the instructions being executable to:
capture an image of a subject to create a video of the subject;
extract, from any image contained in the video, a rectangular region being a unit region for recognition of a character string;
determine the rectangular region to be “true” in a case where conditions (a) and (b) are met or determine the rectangular region to be “false” in a case where at least one of the conditions (a) and (b) is not met, the condition (a) being such that the rectangular region does not overlap, by a certain percentage or more, another rectangular region contained in another image in the video, the another image being an immediately previous target of translation processing, the another rectangular region containing an actually recognized character string, the condition (b) being such that the rectangular region overlaps only either a first end region or a second end region, the first end region having a predetermined width and being located in a first end of the image, the second end region having a predetermined width and being located in a second end of the image which second end is opposite the first end; and
perform a character string recognition for the rectangular region in a case where the rectangular region is determined to be “false”, and skip the character string recognition for the rectangular region in a case where the rectangular region is determined to be “true”.

Assignees

• Sharp Kk

Inventors

• Horiuchi Kenichi
• Ishikawa Hirokazu
• Kishimoto Tatsuo

Classifications

• G06V30/148 Primary

  Segmentation of character regions · CPC title

• G06V30/153

  using recognition of characters or words · CPC title

• G06V30/10

  Character recognition · CPC title

• G06K9/325

  Physics · mapped topic

• G06T2207/10016

  Video; Image sequence · CPC title