Information processing apparatus and information processing method

• US 8,750,627 B2
• Filed: 02/22/2013
• Issued: 06/10/2014
• Est. Priority Date: 12/11/2008
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tanaka, Shuya
• Primary Examiner(s): GORADIA, SHEFALI DINESH
• Application Number:
  US13/774,883
• Publication Number:
  US 20130163886A1
• Time in Patent Office: 473 Days
• Field of Search: 382/100, 382/107, 382/219
• US Class Current: 382/219
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19606 Discriminating between target movement or movement in an area of interest and other non-signicative movements, e.g. target movements induced by camera shake or movements of pets, falling leaves, rotating fan
• CPC Class Codes: G08B 13/19615 wherein said pattern is defined by the user

Abstract

An information processing apparatus and method for processing an input image by comparing a stored background image with the input image to obtain a difference, collating a change in the difference and time of the change with conditions for the occurrence of a periodic event and information as to the time of occurrence of the periodic event, which are previously stored in a storage unit, to determine whether the change in state of the input image is the periodic or a non-periodic movement of an object, and selecting, according to a result of the determination, any one of operations according to the periodic or the non-periodic movement of an object.

Claims

1. An information processing apparatus comprising:

a background image storage unit configured to store a background image;

a periodic event storage unit configured to store conditions for the occurrence of a periodic event and information as to the time of the occurrence of the periodic event and the time length of the periodic event;

an image input unit configured to input an image;

an image comparison unit configured to compare the background image stored in the background image storage unit with an input image input from the image input unit to obtain a difference;

a periodic event collation unit configured to collate the conditions for the occurrence of the change in the difference and the information as to the time of the occurrence of the change in the difference and the time length of the change in the difference with the conditions for the occurrence of the periodic event and the information as to the time of the occurrence of the periodic event and the time length of the periodic event stored in the periodic event storage unit in order to determine whether the change of the input image is the periodic or the non-periodic movement of an object; and

a selection unit configured to select, according to the result of a determination by the periodic event collation unit, any one of operations according to the periodic or the non-periodic movement of an object, and

wherein even when the periodic event collation unit determines that the change of the input image is the non-periodic movement of the object, and when the movement of an object is repeated the predetermined number of times or more, the conditions and the information as to the time and the time length stored in the periodic event storage unit are updated so that the periodic event collation unit can determine that the movement of the object is the periodic movement of the object.

2. An information processing method for an information processing apparatus configured to process an input image, the method comprising:

comparing a stored background image with the input image to obtain a difference;

collating conditions for the occurrence of the change in the difference and information as to the time of the occurrence of the change in the difference and the time length of the change in the difference with conditions for the occurrence of a periodic event and information as to the time of occurrence of the periodic event and the time length of the periodic event, which are previously stored in a storage unit, to determine whether the change in state of the input image is the periodic or a non-periodic movement of an object; and

selecting, according to a result of the determination, any one of operations according to the periodic or the non-periodic movement of the object,

wherein even when the periodic event collation unit determines that the change in state is the non-periodic movement of the object and when the movement of an object is repeated the predetermined number of times or more, the conditions and the information as to the time and the time length stored in the periodic event storage unit are updated so that the periodic event collation unit can determine that the movement of the object is the periodic movement of the object.

3. An information processing apparatus comprising:

a background image storage unit configured to store a background image;

a periodic event storage unit configured to store conditions for the occurrence of a periodic event and information as to the time of the occurrence of the periodic event and the time length of the periodic event;

an image input unit configured to input an image;

an image comparison unit configured to compare the background image stored in the background image storage unit with an input image input from the image input unit to obtain a difference;

a periodic event collation unit configured to collate the conditions for the occurrence of the change in the difference and the information as to the time of the occurrence of the change in the difference and the time length of the change in the difference with the conditions for the occurrence of the periodic event and the information as to the time of the occurrence of the periodic event and the time length of the periodic event in the periodic event storage unit in order to determine whether the change of the input image is the periodic or the non-periodic movement of an object; and

wherein even when the periodic event collation unit determines that the change of the input image is the non-periodic movement of the object and when the movement of an object is repeated the predetermined number of times or more, the conditions and the information as to the time and the time length stored in the periodic event storage unit are updated so that the periodic event collation unit can determine that the movement of the object is the periodic movement of the object.

4. An information processing method for an information processing apparatus configured to process an input image, the method comprising:

comparing a stored background image with the input image to obtain a difference;

collating conditions for the occurrence of the change in the difference and information as to the time of the occurrence of the change in the difference and the time length of the change in the difference with conditions for the occurrence of a periodic event and information as to the time of occurrence of the periodic event and the time length of the periodic even, which are previously stored in a storage unit, to determine whether the change in state of the input image is the periodic or a non-periodic movement of an object; and

wherein even when the periodic event collation unit determines that the change in state is the non-periodic movement of the object and when the movement of an object is repeated the predetermined number of times or more, the conditions and the information as to the time and the time length stored in the periodic event storage unit are updated so that the periodic event collation unit can determine that the movement of the object is the periodic movement of the object.