Image processing apparatus and image processing method

• US 9,514,541 B2
• Filed: 04/24/2012
• Issued: 12/06/2016
• Est. Priority Date: 05/20/2011
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Adachi, Keiji
• Primary Examiner(s): Crawford, Jacinta M
• Assistant Examiner(s): Yang, Yi
• Application Number:
  US13/454,441
• Publication Number:
  US 20120293486A1
• Time in Patent Office: 1,687 Days
• Field of Search: 382/103, 345/175, 345/619, 348/94, 348/148, 348/154, 348/155, 348/352
• US Class Current: 1/1
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/30232 Surveillance
• CPC Class Codes: G06T 7/20 Analysis of motion motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51
• CPC Class Codes: G06T 7/248 involving reference images or patches
• CPC Class Codes: G06T 7/74 involving reference images or patches

Abstract

An image processing apparatus includes a detection unit that detects that a center position of an area corresponding to at least a portion of an object moving within a display screen has moved across an object detection line segment set in the display screen. A setting unit sets an inhibition region, where the detection is inhibited, along a frame of the display screen to provide both (i) a non-inhibition region where the detection is not inhibited and (ii) the inhibition region, together with each other in the display screen, after setting the inhibition region. The non-inhibition region is a remaining region in the display screen, other than the inhibition region. The detection unit detects that the center position has moved across the object detection line segment set in the non-inhibition region.

Claims

1. An image processing apparatus comprising:

at least one processor operatively coupled to a memory, serving as;

an acquisition unit that acquires images;

an input unit that receives an instruction, inputted by a user, for setting an object detection line segment in an image area of a display screen, the object detection line segment being used for detecting at least a portion of an object, detected in the images acquired by the acquisition unit that has intersected with the object detection line segment;

a setting unit that sets the object detection line segment, based on the instruction, in the image area of the display screen;

a determination unit that determines whether at least a portion of the object detection line segment set is included in an inhibition region where the detection is inhibited, the inhibition region being set along at least one side of the image area of the display screen and lies between the at least one side of the image area of the display screen and a border spaced apart from the at least one side of the image area of the display screen by a set distance in an inward direction of the display screen; and

an inhibition region setting unit that sets, as the inhibition region where the detection is inhibited, an outside of a region enclosed by (i) a border spaced apart from a top border of the display screen by a set distance in an inward direction of the display screen, (ii) a border spaced apart from a bottom border of the display screen by a set distance in an inward direction of the display screen, (iii) a border spaced apart from a left border of the display screen by a set distance in an inward direction of the display screen, and (iv) a border spaced apart from a right border of the display screen by a set distance in an inward direction of the display screen,

wherein the setting unit (i) allows the object detection line segment to be set based on the instruction in a case when the determination unit determines that at least a portion of the object detection line segment to be set based on the instruction is not included in the inhibition region, (ii) prevents the object detection line segment in the image area of the display screen from being included in the inhibition region in a case when the determination unit determines that at least the portion of the object detection line segment to be set based on the instruction is included in the inhibition region, and (iii) sets the set distance in accordance with one of a size of the object and a moving speed of the object.

2. The apparatus according to claim 1, wherein, in a case when the determination unit determines that at least the portion of the object detection line segment that is set based on the instruction is included in the inhibition region, the setting unit moves the set object detection line segment to any place in the image area, so that the inhibition region does not include the object detection line segment.

3. An image processing method comprising:

acquiring images;

receiving an instruction, inputted by a user, for setting an object detection line segment in an image area of a display screen, the object detection line segment being used for detecting at least a portion of an object, detected in the acquired images that has intersected with the object detection line segment;

setting the objection detection line segment, based on the instruction, in the image area of the display screen; and

determining whether at least a portion of the object detection line segment set is included in an inhibition region where the detection is inhibited, the inhibition region being set along at least one side of the image area of the display screen and lies between the at least one side of the image area of the display screen and a border spaced apart from the at least one side of the image area of the display screen by a set distance in an inward direction of the display screen,

wherein, in the setting step, as the inhibition region where the detection is inhibited, an outside of a region enclosed by (i) a border spaced apart from a top border of the display screen by a set distance in an inward direction of the display screen, (ii) a border spaced apart from a bottom border of the display screen by a set distance in an inward direction of the display screen, (iii) a border spaced apart from a left border of the display screen by a set distance in an inward direction of the display screen, and (iv) a border spaced apart from a right border of the display screen by a set distance in an inward direction of the display screen are set, and

further, in the setting step, (i) the object detection line segment is allowed to be set based on the instruction in a case when the determining step determines that at least a portion of the object detection line segment to be set based on the instruction is not included in the inhibition region, (ii) the object detection line segment in the image area of the display screen is prevented from being included in the inhibition region in a case when the determining step determines that at least the portion of the object detection line segment to be set based on the instruction is included in the inhibition region, and (iii) the distance is set in accordance with one of a size of the object and a moving speed of the object.

4. The method according to claim 3, wherein, in a case when it is determined that at least the portion of the object detection line segment that is set based on the instruction is included in the inhibition region, the set object detection line segment is moved to any place in the image area, so that the inhibition region does not include the object detection line segment.

5. A non-transitory computer-readable storage medium recording a program for causing a computer to execute:

acquiring images;

receiving an instruction, inputted by a user, for setting an object detection line segment in an image area of a display screen, the object detection line segment being used for detecting at least a portion of an object, detected in the acquired images that has intersected with the object detection line segment;

setting the object detection line segment, based on the instruction, in the image area of the display screen; and

determining whether at least a portion of the object detection line segment set is included in an inhibition region where the detection is inhibited, the inhibition region being set along at least one side of the image area of the display screen and lies between the at least one side of the image area of the display screen and a border spaced apart from the at least one side of the image area of the display screen by a set distance in an inward direction of the display screen,

wherein, in the setting step, as the inhibition region where the detection is inhibited, an outside of a region enclosed by (i) a border spaced apart from a top border of the display screen by a set distance in an inward direction of the display screen, (ii) a border spaced apart from a bottom border of the display screen by a set distance in an inward direction of the display screen, (iii) a border spaced apart from a left border of the display screen by a set distance in an inward direction of the display screen, and (iv) a border spaced apart from a right border of the display screen by a set distance in an inward direction of the display screen are set, and

further, in the setting step, (i) the object detection line segment is allowed to be set based on the instruction in a case when the determining step determines that at least a portion of the object detection line segment to be set based on the instruction is not included in the inhibition region, (ii) the object detection line segment in the image area of the display screen is prevented from being included in the inhibition region in a case when the determining step determines that at least the portion of the object detection line segment to be set based on the instruction is included in the inhibition region, and (iii) the distance is set in accordance with one of a size of the object and a moving speed of the object.

6. The non-transitory computer-readable storage medium according to claim 5, wherein, in a case when it is determined that at least the portion of the object detection line segment that is set based on the instruction is included in the inhibition region, the set object detection line segment is moved to any place in the image area, so that the inhibition region does not include the object detection line segment.