US 2015/0085194 A1 · STILL IMAGE PROVISION DEVICE

Abstract

A moving image acquiring part acquires a moving image. A still image accumulating part stores still images. An image processing part calculates gains obtained by previously storing based on the costs of extraction of still images from a moving image, and extracts some still images with higher gains from among the still images composing the moving image and stores into the still image accumulating part. A request processing part retrieves a still image requested by a request source from the still image accumulating part and transmits to the request source and, when the still image requested by the request source is not stored in the still image accumulating part, extracts the still image requested by the request source from the moving image acquired by the moving image acquiring part and transmits to the request source.

Claims15

Dependent claims

A still image provision device transmitting a still image requested by a request source among a plurality of still images composing a moving image to the request source, the still image provision device comprising:

a moving image acquiring part configured to acquire a moving image;
a still image accumulating part configured to store still images composing the moving image;
an image processing part configured to, before request by the request source, calculate a gain of each of the still images obtained by storing the still image based on a cost of extraction of the still image from the moving image, and extract the still image with the higher gain from the moving image and store into the still image accumulating part;
and
a request processing part configured to retrieve the still image requested by the request source from the still image accumulating part and transmit to the request source and, in a case where the still image requested by the request source is not stored in the still image accumulating part, extract the still image requested by the request source from the moving image acquired by the moving image acquiring part and transmit to the request source.

2 more elements

A non-transitory computer-readable medium storing a program comprising instructions for causing a computer, which has a still image accumulating part configured to store still images and transmits a still image requested by a request source among a plurality of still images composing a moving image to the request source, to function as:

a moving image acquiring part configured to acquire a moving image;
an image processing part configured to, before request by the request source, calculate a gain obtained by previously storing the still image based on a cost of extraction of the still image from the moving image, and extract the still image with the higher gain among the plurality of still images composing the moving image, from the moving image, and store into the still image accumulating part;
and
a request processing part configured to retrieve the still image requested by the request source from the still image accumulating part and transmit to the request source and, in a case where the still image requested by the request source is not stored in the still image accumulating part, extract the still image requested by the request source from the moving image acquired by the moving image acquiring part and transmit to the request source.

1 more element

Dependencies are inferred from the claim text.

Still image provision device

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Still image provision device

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Abstract

Claims15