Image processing apparatus for specifying an image relating to a predetermined moment from among a plurality of images

Patent metadata

Field	Value
Publication number	US-9367746-B2
Application number	US-201414500513-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Sep 30, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

An image capture apparatus includes an image acquisition unit 5 a , an area setting unit 5 b , and an image specifying unit 5 c . The image acquisition unit 5 a acquires a first image group including plural images, the plural images obtained by sequentially photographing motion of an object. The area setting unit 5 b sets plural areas at plural positions on each of the images of the first image group acquired by the image acquisition unit 5 a . The image specifying unit 5 c acquires pixel values of the plural areas set on each of the images by the area setting unit, and specifies a second image group including plural images relating to prescribed moments of motion of the object from among the first image group including plural images, based on change in the acquired pixel values of the plural areas.

First claim

What is claimed is:

1. An image processing apparatus comprising:
an acquisition unit which acquires a first image group including plural images, the plural images being obtained by sequentially photographing motion of an object;
an area setting unit which sets plural areas at plural positions on each of the images of the first image group acquired by the acquisition unit;
a threshold value setting unit which sets representative values of pixel values of the plural areas of a prescribed number of images falling within a prescribed period as threshold values for specifying plural images relating to specific moments of motion of the object;
a first calculation unit which calculates respective evaluation values for each of the plural areas set on each of the plural images;
a determination unit which determines whether the respective evaluation values calculated by the first calculation unit for each of the plural areas are larger than corresponding ones of the representative values; and
a specifying unit which acquires pixel values of the plural areas set on each of the images by the area setting unit, and specifies a first image having plural areas in which the object appears, the first image being photographed first, and a second image having plural areas in which the object appears, the second image being photographed latest, from among plural images of a second image group, the second image group including the plural images relating to the specific moments of motion of the object from among the first image group including the plural images, and the specifying unit specifying the first image and the second image based on a change in the acquired pixel values of the plural areas when the determination unit determines that the evaluation values of the plural areas are larger than the corresponding threshold values.

2. The image processing apparatus according to claim 1 , further comprising:
a second calculation unit which calculates one of an average value and a median value of the pixel values of the areas set on the prescribed number of images acquired by the acquisition unit, and
wherein the threshold value setting unit sets the one of the average value and the median value calculated by the second calculation unit as one of the representative values.

3. The image processing apparatus according to claim 1 , further comprising:
an extracting unit which extracts, as a moving image, the plural images relating to the specific moments of motion of the object.

4. A method of specifying images in an image processing apparatus, the method comprising:
acquiring a first image group including plural images, the plural images being obtained by sequentially photographing motion of an object;
setting plural areas at plural positions on each of the images of the first image group;
setting representative values of pixel values of the plural areas of a prescribed number of images falling within a prescribed period as threshold values for specifying plural images relating to specific moments of motion of the object;
calculating respective evaluation values for each of the plural areas set on each of the plural images;
determining whether the respective evaluation values calculated for each of the plural areas are larger than corresponding ones of the representative values; and
acquiring pixel values of the plural areas set on each of the images, and specifying a first image having plural areas in which the object appears, the first image being photographed first, and a second image having plural areas in which the object appears, the second image being photographed latest, from among plural images of a second image group, the second image group including the plural images relating to the specific moments of motion of the object from among the first image group including the plural images, and the first image and the second image being specified based on a change in the acquired pixel values of the plural areas when it is determined that the evaluation values of the plural areas are larger than the corresponding threshold values.

5. A non-transitory computer-readable storage medium with an executable program stored thereon, wherein the program is executable to control a computer to perform functions comprising:
acquiring a first image group including plural images, the plural images being obtained by sequentially photographing motion of an object;
setting plural areas at plural positions on each of the images of the first image group;
setting representative values of pixel values of the plural areas of a prescribed number of images falling within a prescribed period as threshold values for specifying plural images relating to specific moments of motion of the object;
calculating respective evaluation values for each of the plural areas set on each of the plural images;
determining whether the respective evaluation values calculated for each of the plural areas are larger than corresponding ones of the representative values; and
acquiring pixel values of the plural areas set on each of the images, and specifying a first image having plural areas in which the object appears, the first image being photographed first, and a second image having plural areas in which the object appears, the second image being photographed latest, from among plural images of a second image group, the second image group including the plural images relating to the specific moments of motion of the object from among the first image group including the plural images, and the first image and the second image being specified based on a change in the acquired pixel values of the plural areas when it is determined that the evaluation values of the plural areas are larger than the corresponding threshold values.

6. An image processing apparatus comprising:
an acquisition unit which acquires a first image group including plural images, the plural images being obtained by sequentially photographing motion of an object;
an area setting unit which sets plural areas at plural positions on each of the images of the first image group acquired by the acquisition unit;
a threshold value setting unit which sets representative values of the pixel values of the areas of a prescribed number of images falling within a prescribed period as threshold values for specifying plural images relating to specific moments of motion of the object;
a calculation unit which calculates one of an average value and a median value of the pixel values of the areas set on the prescribed number of images acquired by the acquisition unit, the threshold value setting unit setting the one of the average value and the median value calculated by the calculation unit as one of the representative values; and
a specifying unit which acquires pixel values of the plural areas set on each of the images by the area setting unit, and specifies a first image having plural areas in which the object appears, the first image being photographed first, and a second image having plural areas in which the object appears, the second image being photographed latest, from among plural images of a second image group, the second image group including the plural images relating to the specific moments of motion of the object from among the first image group including the plural images, and the specifying unit specifying the first image and the second image based on a change in the acquired pixel values of the plural areas and the threshold values set by the threshold value setting unit.

7. A method of specifying images in an image processing apparatus, the method comprising:
acquiring a first image group including plural images, the plural images being obtained by sequentially photographing motion of an object;
setting plural areas at plural positions on each of the

Assignees

• Casio Computer Co Ltd

Inventors

• Ishihara Masanori

Classifications

• G06K9/00724 Primary

  Physics · mapped topic

• G06K9/00342

  Physics · mapped topic

• G06T7/20 Primary

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• G06V20/42 Primary

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• G06V40/23 Primary

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